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18 Commits

Author SHA1 Message Date
Ian Barwick
40b6c92129 doc: update release notes
Finalize release date.
2019-06-26 15:57:17 +09:00
Ian Barwick
761d65526c Finalize version number
4.4
2019-06-26 15:56:33 +09:00
Ian Barwick
a13a1232e9 doc: document optional configuration settings 2019-06-20 16:50:30 +09:00
Ian Barwick
65965b3ba4 4.4rc1 2019-06-20 16:21:54 +09:00
Ian Barwick
629d2b8f85 doc: clean up release notes
Remove tabs.
2019-06-20 16:18:41 +09:00
Ian Barwick
23c285b73b doc: fix typo 2019-06-12 16:29:17 +09:00
Ian Barwick
915fb7d617 note that "standby follow" requires a primary to be available
While it's technically possible to have a standby follow another
standby while the primary is not available, repmgr will not be able
to update its metadata, which will cause Confusion and Chaos.

Update the documentation to make this clear, and provide a more helpful
error message if this situation occurs. The operation previously
failed anyway, but with an unhelpful message about not being able to
find a node record.
2019-06-11 15:18:41 +09:00
Ian Barwick
ae141b9d32 4.4beta2 2019-06-10 15:18:41 +09:00
Ian Barwick
d035550723 doc: add missing space 2019-06-10 09:02:51 +09:00
Ian Barwick
c7692b5d84 doc: improve repmgr.conf settings documentation 2019-06-07 12:50:05 +09:00
Ian Barwick
08b7f1294b doc: improve configuration documentation 2019-06-07 12:17:49 +09:00
Ian Barwick
81d01bf0e8 Canonicalize the data directory path when parsing the configuration file
This ensures the provided path matches the path PostgreSQL reports as its
data directory.
2019-06-07 09:53:44 +09:00
Ian Barwick
089c778e49 Fix extension version number query 2019-06-06 12:46:30 +09:00
Ian Barwick
b4b5681762 standby follow: remove some ineffective code
For some reason we were taking the trouble to extract an appliction_name
from the local node's conninfo, but this was being subsequently overwritten
with the node name (which is what we want anyway).
2019-06-06 12:15:23 +09:00
Ian Barwick
e5ef549aa7 doc: update release notes 2019-06-06 11:30:43 +09:00
Ian Barwick
cfc41392c3 Ensure parsed value of --upstream-conninfo is written to recovery.conf
Previously it was being parsed (a step which ensures any "application_name"
set by the caller is changed to the node name), but the original string
was being copied to "primary_conninfo" anyway.
2019-06-06 11:30:40 +09:00
Ian Barwick
55dc4f7a5f Remove redundant comment in .sql files 2019-06-04 13:46:30 +09:00
Ian Barwick
6616712346 4.4beta1 2019-06-04 13:22:56 +09:00
123 changed files with 7324 additions and 14535 deletions

3
.gitignore vendored
View File

@@ -53,6 +53,3 @@ repmgr
repmgrd repmgrd
repmgr4 repmgr4
repmgrd4 repmgrd4
# generated files
configfile-scan.c

View File

@@ -2,7 +2,7 @@ License and Contributions
========================= =========================
`repmgr` is licensed under the GPL v3. All of its code and documentation is `repmgr` is licensed under the GPL v3. All of its code and documentation is
Copyright 2010-2021, EnterpriseDB Corporation. See the files COPYRIGHT and LICENSE for Copyright 2010-2019, 2ndQuadrant Limited. See the files COPYRIGHT and LICENSE for
details. details.
The development of repmgr has primarily been sponsored by 2ndQuadrant customers. The development of repmgr has primarily been sponsored by 2ndQuadrant customers.
@@ -12,10 +12,10 @@ which has received funding from the European Union's Seventh Framework Programme
(FP7/2007-2013) under grant agreement 258862. (FP7/2007-2013) under grant agreement 258862.
Contributions to `repmgr` are welcome, and will be listed in the file `CREDITS`. Contributions to `repmgr` are welcome, and will be listed in the file `CREDITS`.
EnterpriseDB Corporation requires that any contributions provide a copyright 2ndQuadrant Limited requires that any contributions provide a copyright
assignment and a disclaimer of any work-for-hire ownership claims from the assignment and a disclaimer of any work-for-hire ownership claims from the
employer of the developer. This lets us make sure that all of the repmgr employer of the developer. This lets us make sure that all of the repmgr
distribution remains free code. Please contact info@enterprise.com for a distribution remains free code. Please contact info@2ndQuadrant.com for a
copy of the relevant Copyright Assignment Form. copy of the relevant Copyright Assignment Form.
Code style Code style

View File

@@ -1,4 +1,4 @@
Copyright (c) 2010-2021, EnterpriseDB Corporation Copyright (c) 2010-2019, 2ndQuadrant Limited
All rights reserved. All rights reserved.
This program is free software: you can redistribute it and/or modify This program is free software: you can redistribute it and/or modify

2
FAQ.md
View File

@@ -5,6 +5,6 @@ The repmgr 4 FAQ is located here: [repmgr FAQ (Frequently Asked Questions)](http
The repmgr 3.x FAQ can be found here: The repmgr 3.x FAQ can be found here:
https://github.com/EnterpriseDB/repmgr/blob/REL3_3_STABLE/FAQ.md https://github.com/2ndQuadrant/repmgr/blob/REL3_3_STABLE/FAQ.md
Note that repmgr 3.x is no longer supported. Note that repmgr 3.x is no longer supported.

82
HISTORY
View File

@@ -1,85 +1,3 @@
5.3.0 2021-10-12
standby switchover: improve handling of node rejoin failure (Ian)
repmgrd: prefix all shared library functions with "repmgr_" to
minimize the risk of clashes with other shared libraries (Ian)
repmgrd: at startup, if node record is marked as "inactive", attempt
to set it to "active" (Ian)
standby clone: set "slot_name" in node record if required (Ian)
node rejoin: emit rejoin target note information as NOTICE (Ian)
repmgrd: ensure short option "-s" is accepted (Ian)
5.2.1 2020-12-07
config: fix parsing of "replication_type"; GitHub #672 (Ian)
standby clone: handle missing "postgresql.auto.conf" (Ian)
standby clone: add option --recovery-min-apply-delay (Ian)
standby clone: fix data directory permissions handling for
PostgreSQL 11 and later (Ian)
repmgrd: prevent termination when local node not available and
standby_disconnect_on_failover; GitHub #675 (Ian)
repmgrd: ensure reconnect_interval" is correctly handled;
GitHub #673 (Ian)
5.2.0 2020-10-22
general: add support for PostgreSQL 13 (Ian)
general: remove support for PostgreSQL 9.3 (Ian)
config: add support for file inclusion directives (Ian)
repmgr: "primary unregister --force" will unregister an active primary
with no registered standby nodes (Ian)
repmgr: add option --verify-backup to "standby clone" (Ian)
repmgr: "standby clone" honours --waldir option if set in
"pg_basebackup_options" (Ian)
repmgr: add option --db-connection to "node check" (Ian)
repmgr: report database connection error if the --optformat option was
provided to "node check" (Ian)
repmgr: improve "node rejoin" checks (Ian)
repmgr: enable "node rejoin" to join a target with a lower timeline (Ian)
repmgr: support pg_rewind's automatic crash recovery in Pg13 and later (Ian)
repmgr: improve output formatting for cluster matrix/crosscheck (Ian)
repmgr: improve database connection failure error checking on the
demotion candidate during "standby switchover" (Ian)
repmgr: make repmgr metadata tables dumpable (Ian)
repmgr: fix issue with tablespace mapping when cloning from Barman;
GitHub #650 (Ian)
repmgr: improve handling of pg_control read errors (Ian)
repmgrd: add additional optional parameters to "failover_validation command"
(spaskalev; GitHub #651)
repmgrd: ensure primary connection is reset if same as upstream;
GitHub #633 (Ian)
5.1.0 2020-04-13
repmgr: remove BDR 2.x support
repmgr: don't query upstream's data directory (Ian)
repmgr: rename --recovery-conf-only to --replication-conf-only (Ian)
repmgr: ensure postgresql.auto.conf is created with correct permissions (Ian)
repmgr: minimize requirement to check upstream data directory location
during "standby clone" (Ian)
repmgr: warn about missing pg_rewind prerequisites when executing
"standby clone" (Ian)
repmgr: add --upstream option to "node check"
repmgr: report error code on follow/rejoin failure due to non-available
0 replication slot (Ian)
repmgr: ensure "node rejoin" checks for available replication slots (Ian)
repmgr: improve "standby switchover" completion checks (Ian)
repmgr: add replication configuration file ownership check to
"standby switchover" (Ian)
repmgr: check the demotion candidate's registered repmgr.conf file can
be found (laixiong; GitHub 615)
repmgr: consolidate replication connection code (Ian)
repmgr: check permissions for "pg_promote()" and fall back to pg_ctl
if necessary (Ian)
repmgr: in --dry-run mode, display promote command which will be used (Ian)
repmgr: enable "service_promote_command" in PostgreSQL 12 (Ian)
repmgr: accept option -S/--superuser for "node check"; GitHub #612 (Ian)
5.0 2019-10-15
general: add PostgreSQL 12 support (Ian)
general: parse configuration file using flex (Ian)
repmgr: rename "repmgr daemon ..." commands to "repmgr service ..." (Ian)
repmgr: improve data directory check (Ian)
repmgr: improve extension check during "standby clone" (Ian)
repmgr: pass provided log level when executing repmgr remotely (Ian)
repmgrd: fix handling of upstream node change check (Ian)
4.4 2019-06-27 4.4 2019-06-27
repmgr: improve "daemon status" output (Ian) repmgr: improve "daemon status" output (Ian)
repmgr: add "--siblings-follow" option to "standby promote" (Ian) repmgr: add "--siblings-follow" option to "standby promote" (Ian)

View File

@@ -2,7 +2,6 @@
# Makefile.global.in # Makefile.global.in
# @configure_input@ # @configure_input@
# Can only be built using pgxs # Can only be built using pgxs
USE_PGXS=1 USE_PGXS=1
@@ -15,9 +14,6 @@ ifeq ($(vpath_build),yes)
VPATH := $(repmgr_abs_srcdir)/$(repmgr_subdir) VPATH := $(repmgr_abs_srcdir)/$(repmgr_subdir)
USE_VPATH :=$(VPATH) USE_VPATH :=$(VPATH)
endif endif
SED=@SED@
GIT_WORK_TREE=${repmgr_abs_srcdir} GIT_WORK_TREE=${repmgr_abs_srcdir}
GIT_DIR=${repmgr_abs_srcdir}/.git GIT_DIR=${repmgr_abs_srcdir}/.git
export GIT_DIR export GIT_DIR
@@ -28,13 +24,4 @@ include $(PGXS)
-include ${repmgr_abs_srcdir}/Makefile.custom -include ${repmgr_abs_srcdir}/Makefile.custom
REPMGR_VERSION=$(shell awk '/^\#define REPMGR_VERSION / { print $3; }' ${repmgr_abs_srcdir}/repmgr_version.h.in | cut -d '"' -f 2) REPMGR_VERSION=$(shell awk '/^\#define REPMGR_VERSION / { print $3; }' ${repmgr_abs_srcdir}/repmgr_version.h.in | cut -d '"' -f 2)
REPMGR_RELEASE_DATE=$(shell awk '/^\#define REPMGR_RELEASE_DATE / { print $3; }' ${repmgr_abs_srcdir}/repmgr_version.h.in | cut -d '"' -f 2)
FLEX = flex
##########################################################################
#
# Global targets and rules
%.c: %.l
$(FLEX) $(FLEXFLAGS) -o'$@' $<

View File

@@ -11,9 +11,6 @@ EXTENSION = repmgr
DATA = \ DATA = \
repmgr--unpackaged--4.0.sql \ repmgr--unpackaged--4.0.sql \
repmgr--unpackaged--5.1.sql \
repmgr--unpackaged--5.2.sql \
repmgr--unpackaged--5.3.sql \
repmgr--4.0.sql \ repmgr--4.0.sql \
repmgr--4.0--4.1.sql \ repmgr--4.0--4.1.sql \
repmgr--4.1.sql \ repmgr--4.1.sql \
@@ -22,15 +19,7 @@ DATA = \
repmgr--4.2--4.3.sql \ repmgr--4.2--4.3.sql \
repmgr--4.3.sql \ repmgr--4.3.sql \
repmgr--4.3--4.4.sql \ repmgr--4.3--4.4.sql \
repmgr--4.4.sql \ repmgr--4.4.sql
repmgr--4.4--5.0.sql \
repmgr--5.0.sql \
repmgr--5.0--5.1.sql \
repmgr--5.1.sql \
repmgr--5.1--5.2.sql \
repmgr--5.2.sql \
repmgr--5.2--5.3.sql \
repmgr--5.3.sql
REGRESS = repmgr_extension REGRESS = repmgr_extension
@@ -62,27 +51,21 @@ $(info Building against PostgreSQL $(MAJORVERSION))
REPMGR_CLIENT_OBJS = repmgr-client.o \ REPMGR_CLIENT_OBJS = repmgr-client.o \
repmgr-action-primary.o repmgr-action-standby.o repmgr-action-witness.o \ repmgr-action-primary.o repmgr-action-standby.o repmgr-action-witness.o \
repmgr-action-cluster.o repmgr-action-node.o repmgr-action-service.o repmgr-action-daemon.o \ repmgr-action-bdr.o repmgr-action-cluster.o repmgr-action-node.o repmgr-action-daemon.o \
configdata.o configfile.o configfile-scan.o log.o strutil.o controldata.o dirutil.o compat.o \ configfile.o log.o strutil.o controldata.o dirutil.o compat.o dbutils.o sysutils.o
dbutils.o sysutils.o REPMGRD_OBJS = repmgrd.o repmgrd-physical.o repmgrd-bdr.o configfile.o log.o dbutils.o strutil.o controldata.o compat.o sysutils.o
REPMGRD_OBJS = repmgrd.o repmgrd-physical.o configdata.o configfile.o configfile-scan.o log.o \
dbutils.o strutil.o controldata.o compat.o sysutils.o
DATE=$(shell date "+%Y-%m-%d") DATE=$(shell date "+%Y-%m-%d")
repmgr_version.h: repmgr_version.h.in repmgr_version.h: repmgr_version.h.in
$(SED) -E 's/REPMGR_VERSION_DATE.*""/REPMGR_VERSION_DATE "$(DATE)"/' $< >$@; \ sed '0,/REPMGR_VERSION_DATE/s,\(REPMGR_VERSION_DATE\).*,\1 "$(DATE)",' $< >$@
$(SED) -i -E 's/PG_ACTUAL_VERSION_NUM/PG_ACTUAL_VERSION_NUM $(VERSION_NUM)/' $@
configfile-scan.c: configfile-scan.l
$(REPMGR_CLIENT_OBJS): repmgr-client.h repmgr_version.h $(REPMGR_CLIENT_OBJS): repmgr-client.h repmgr_version.h
repmgr: $(REPMGR_CLIENT_OBJS) repmgr: $(REPMGR_CLIENT_OBJS)
$(CC) $(CFLAGS) $(REPMGR_CLIENT_OBJS) $(libpq_pgport) $(LDFLAGS) $(LDFLAGS_EX) -o $@$(X) $(CC) $(CFLAGS) $(REPMGR_CLIENT_OBJS) $(libpq_pgport) $(LDFLAGS) $(LDFLAGS_EX) $(LIBS) -o $@$(X)
repmgrd: $(REPMGRD_OBJS) repmgrd: $(REPMGRD_OBJS)
$(CC) $(CFLAGS) $(REPMGRD_OBJS) $(libpq_pgport) $(LDFLAGS) $(LDFLAGS_EX) -o $@$(X) $(CC) $(CFLAGS) $(REPMGRD_OBJS) $(libpq_pgport) $(LDFLAGS) $(LDFLAGS_EX) $(LIBS) -o $@$(X)
$(REPMGR_CLIENT_OBJS): $(HEADERS) $(REPMGR_CLIENT_OBJS): $(HEADERS)
$(REPMGRD_OBJS): $(HEADERS) $(REPMGRD_OBJS): $(HEADERS)
@@ -115,7 +98,6 @@ maintainer-clean: additional-maintainer-clean
additional-clean: additional-clean:
rm -f *.o rm -f *.o
rm -f repmgr_version.h
$(MAKE) -C doc clean $(MAKE) -C doc clean
additional-maintainer-clean: clean additional-maintainer-clean: clean

View File

@@ -7,31 +7,32 @@ replication capabilities with utilities to set up standby servers, monitor
replication, and perform administrative tasks such as failover or switchover replication, and perform administrative tasks such as failover or switchover
operations. operations.
The most recent `repmgr` version (5.2.1) supports all PostgreSQL versions from `repmgr 4` is a complete rewrite of the existing `repmgr` codebase, allowing
9.5 to 13. PostgreSQL 9.4 is also supported, with some restrictions. the use of all of the latest features in PostgreSQL replication.
PostgreSQL 11, 10, 9.6 and 9.5 are fully supported.
PostgreSQL 9.4 and 9.3 are supported, with some restrictions.
`repmgr` is distributed under the GNU GPL 3 and maintained by 2ndQuadrant.
### BDR support
`repmgr 4` supports monitoring of a two-node BDR 2.0 cluster on PostgreSQL 9.6
only. Note that BDR 2.0 is not publicly available; please contact 2ndQuadrant
for details.
`repmgr` is distributed under the GNU GPL 3 and maintained by EnterpriseDB.
Documentation Documentation
------------- -------------
The full `repmgr` documentation is available here: The main `repmgr` documentation is available here:
> [repmgr documentation](https://repmgr.org/docs/current/index.html) > [repmgr documentation](https://repmgr.org/docs/current/index.html)
The old `README` file for `repmgr` 3.x is available here: The `README` file for `repmgr` 3.x is available here:
> https://github.com/EnterpriseDB/repmgr/blob/REL3_3_STABLE/README.md > https://github.com/2ndQuadrant/repmgr/blob/REL3_3_STABLE/README.md
Note that the `repmgr` 3.x series is no longer supported and contains known bugs;
please upgrade to the [current repmgr version](https://repmgr.org/docs/current/appendix-release-notes.html)
as soon as possible.
Versions
--------
For an overview of `repmgr` versions and PostgreSQL compatibility, see the
[repmgr compatibility matrix](https://repmgr.org/docs/current/install-requirements.html#INSTALL-COMPATIBILITY-MATRIX).
Files Files
------ ------
@@ -55,11 +56,11 @@ Directories
Support and Assistance Support and Assistance
---------------------- ----------------------
EnterpriseDB provides 24x7 production support for `repmgr`, including 2ndQuadrant provides 24x7 production support for `repmgr`, including
configuration assistance, installation verification and training for configuration assistance, installation verification and training for
running a robust replication cluster. For further details see: running a robust replication cluster. For further details see:
* [EDB Support Services](https://www.enterprisedb.com/support/postgresql-support-overview-get-the-most-out-of-postgresql) * https://2ndquadrant.com/en/support/
There is a mailing list/forum to discuss contributions or issues: There is a mailing list/forum to discuss contributions or issues:
@@ -69,12 +70,21 @@ The IRC channel #repmgr is registered with freenode.
Please report bugs and other issues to: Please report bugs and other issues to:
* https://github.com/EnterpriseDB/repmgr * https://github.com/2ndQuadrant/repmgr
Further information is available at https://repmgr.org/ Further information is available at https://repmgr.org/
We'd love to hear from you about how you use repmgr. Case studies and We'd love to hear from you about how you use repmgr. Case studies and
news are always welcome. news are always welcome. Send us an email at info@2ndQuadrant.com, or
send a postcard to
repmgr
c/o 2ndQuadrant
7200 The Quorum
Oxford Business Park North
Oxford
OX4 2JZ
United Kingdom
Thanks from the repmgr core team. Thanks from the repmgr core team.
@@ -88,6 +98,7 @@ Further reading
--------------- ---------------
* [repmgr documentation](https://repmgr.org/docs/current/index.html) * [repmgr documentation](https://repmgr.org/docs/current/index.html)
* [How to Automate PostgreSQL 12 Replication and Failover with repmgr - Part 1](https://www.2ndquadrant.com/en/blog/how-to-automate-postgresql-12-replication-and-failover-with-repmgr-part-1/) * https://blog.2ndquadrant.com/repmgr-3-2-is-here-barman-support-brand-new-high-availability-features/
* [How to Automate PostgreSQL 12 Replication and Failover with repmgr - Part 2](https://www.2ndquadrant.com/en/blog/how-to-automate-postgresql-12-replication-and-failover-with-repmgr-part-2/) * https://blog.2ndquadrant.com/improvements-in-repmgr-3-1-4/
* [How to implement repmgr for PostgreSQL automatic failover](https://www.enterprisedb.com/postgres-tutorials/how-implement-repmgr-postgresql-automatic-failover) * https://blog.2ndquadrant.com/managing-useful-clusters-repmgr/
* https://blog.2ndquadrant.com/easier_postgresql_90_clusters/

View File

@@ -1,7 +1,7 @@
TODO TODO
==== ====
This file contains a list of improvements which are desirable and/or have This file contains a list of improvements which are desireable and/or have
been requested, and which we aim to address/implement when time and resources been requested, and which we aim to address/implement when time and resources
permit. permit.
@@ -17,4 +17,4 @@ repmgrd nodes to prevent unintended failover; this is obviously inconvenient.
We'll need to implement some way of notifying each repmgrd to suspend automatic We'll need to implement some way of notifying each repmgrd to suspend automatic
failover until further notice. failover until further notice.
Requested in GitHub #410 ( https://github.com/EnterpriseDB/repmgr/issues/410 ) Requested in GitHub #410 ( https://github.com/2ndQuadrant/repmgr/issues/410 )

View File

@@ -1,7 +0,0 @@
/*
* bdr_version_api.h
*
* This is a dummy file to facilitated building Debian packages against
* PostgreSQL Extended. It may be removed in the future. Do not add any
* code to this file.
*/

View File

@@ -6,7 +6,7 @@
* supported PostgreSQL versions. They're unlikely to change but * supported PostgreSQL versions. They're unlikely to change but
* it would be worth keeping an eye on them for any fixes/improvements. * it would be worth keeping an eye on them for any fixes/improvements.
* *
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California

View File

@@ -1,6 +1,6 @@
/* /*
* compat.h * compat.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California

View File

@@ -1,946 +0,0 @@
/*
* configdata.c - contains structs with parsed configuration data
*
* Copyright (c) EnterpriseDB Corporation, 2010-2021
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "repmgr.h"
#include "configfile.h"
/*
* Parsed configuration settings are stored here
*/
t_configuration_options config_file_options;
/*
* Configuration settings are defined here
*/
struct ConfigFileSetting config_file_settings[] =
{
/* ================
* node information
* ================
*/
/* node_id */
{
"node_id",
CONFIG_INT,
{ .intptr = &config_file_options.node_id },
{ .intdefault = UNKNOWN_NODE_ID },
{ .intminval = MIN_NODE_ID },
{},
{}
},
/* node_name */
{
"node_name",
CONFIG_STRING,
{ .strptr = config_file_options.node_name },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.node_name) },
{}
},
/* conninfo */
{
"conninfo",
CONFIG_STRING,
{ .strptr = config_file_options.conninfo },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.conninfo) },
{}
},
/* replication_user */
{
"replication_user",
CONFIG_STRING,
{ .strptr = config_file_options.replication_user },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.replication_user) },
{}
},
/* data_directory */
{
"data_directory",
CONFIG_STRING,
{ .strptr = config_file_options.data_directory },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.data_directory) },
{ .postprocess_func = &repmgr_canonicalize_path }
},
/* config_directory */
{
"config_directory",
CONFIG_STRING,
{ .strptr = config_file_options.config_directory },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.config_directory) },
{ .postprocess_func = &repmgr_canonicalize_path }
},
/* pg_bindir */
{
"pg_bindir",
CONFIG_STRING,
{ .strptr = config_file_options.pg_bindir },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.pg_bindir) },
{ .postprocess_func = &repmgr_canonicalize_path }
},
/* repmgr_bindir */
{
"repmgr_bindir",
CONFIG_STRING,
{ .strptr = config_file_options.repmgr_bindir },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.repmgr_bindir) },
{ .postprocess_func = &repmgr_canonicalize_path }
},
/* replication_type */
{
"replication_type",
CONFIG_REPLICATION_TYPE,
{ .replicationtypeptr = &config_file_options.replication_type },
{ .replicationtypedefault = DEFAULT_REPLICATION_TYPE },
{},
{},
{}
},
/* ================
* logging settings
* ================
*/
/*
* log_level
* NOTE: the default for "log_level" is set in log.c and does not need
* to be initialised here
*/
{
"log_level",
CONFIG_STRING,
{ .strptr = config_file_options.log_level },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.log_level) },
{}
},
/* log_facility */
{
"log_facility",
CONFIG_STRING,
{ .strptr = config_file_options.log_facility },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.log_facility) },
{}
},
/* log_file */
{
"log_file",
CONFIG_STRING,
{ .strptr = config_file_options.log_file },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.log_file) },
{ .postprocess_func = &repmgr_canonicalize_path }
},
/* log_status_interval */
{
"log_status_interval",
CONFIG_INT,
{ .intptr = &config_file_options.log_status_interval },
{ .intdefault = DEFAULT_LOG_STATUS_INTERVAL, },
{ .intminval = 0 },
{},
{}
},
/* ======================
* standby clone settings
* ======================
*/
/* use_replication_slots */
{
"use_replication_slots",
CONFIG_BOOL,
{ .boolptr = &config_file_options.use_replication_slots },
{ .booldefault = DEFAULT_USE_REPLICATION_SLOTS },
{},
{},
{}
},
/* pg_basebackup_options */
{
"pg_basebackup_options",
CONFIG_STRING,
{ .strptr = config_file_options.pg_basebackup_options },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.pg_basebackup_options) },
{}
},
/* restore_command */
{
"restore_command",
CONFIG_STRING,
{ .strptr = config_file_options.restore_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.restore_command) },
{}
},
/* tablespace_mapping */
{
"tablespace_mapping",
CONFIG_TABLESPACE_MAPPING,
{ .tablespacemappingptr = &config_file_options.tablespace_mapping },
{},
{},
{},
{}
},
/* recovery_min_apply_delay */
{
"recovery_min_apply_delay",
CONFIG_STRING,
{ .strptr = config_file_options.recovery_min_apply_delay },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.recovery_min_apply_delay) },
{
.process_func = &parse_time_unit_parameter,
.providedptr = &config_file_options.recovery_min_apply_delay_provided
}
},
/* archive_cleanup_command */
{
"archive_cleanup_command",
CONFIG_STRING,
{ .strptr = config_file_options.archive_cleanup_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.archive_cleanup_command) },
{}
},
/* use_primary_conninfo_password */
{
"use_primary_conninfo_password",
CONFIG_BOOL,
{ .boolptr = &config_file_options.use_primary_conninfo_password },
{ .booldefault = DEFAULT_USE_PRIMARY_CONNINFO_PASSWORD },
{},
{},
{}
},
/* passfile */
{
"passfile",
CONFIG_STRING,
{ .strptr = config_file_options.passfile },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.passfile) },
{}
},
/* ======================
* standby clone settings
* ======================
*/
/* promote_check_timeout */
{
"promote_check_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.promote_check_timeout },
{ .intdefault = DEFAULT_PROMOTE_CHECK_TIMEOUT },
{ .intminval = 1 },
{},
{}
},
/* promote_check_interval */
{
"promote_check_interval",
CONFIG_INT,
{ .intptr = &config_file_options.promote_check_interval },
{ .intdefault = DEFAULT_PROMOTE_CHECK_INTERVAL },
{ .intminval = 1 },
{},
{}
},
/* =======================
* standby follow settings
* =======================
*/
/* primary_follow_timeout */
{
"primary_follow_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.primary_follow_timeout },
{ .intdefault = DEFAULT_PRIMARY_FOLLOW_TIMEOUT, },
{ .intminval = 1 },
{},
{}
},
/* standby_follow_timeout */
{
"standby_follow_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.standby_follow_timeout },
{ .intdefault = DEFAULT_STANDBY_FOLLOW_TIMEOUT },
{ .intminval = 1 },
{},
{}
},
/* standby_follow_restart */
{
"standby_follow_restart",
CONFIG_BOOL,
{ .boolptr = &config_file_options.standby_follow_restart },
{ .booldefault = DEFAULT_STANDBY_FOLLOW_RESTART },
{},
{},
{}
},
/* ===========================
* standby switchover settings
* ===========================
*/
/* shutdown_check_timeout */
{
"shutdown_check_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.shutdown_check_timeout },
{ .intdefault = DEFAULT_SHUTDOWN_CHECK_TIMEOUT },
{ .intminval = 1 },
{},
{}
},
/* standby_reconnect_timeout */
{
"standby_reconnect_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.standby_reconnect_timeout },
{ .intdefault = DEFAULT_STANDBY_RECONNECT_TIMEOUT },
{ .intminval = 1 },
{},
{}
},
/* wal_receive_check_timeout */
{
"wal_receive_check_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.wal_receive_check_timeout },
{ .intdefault = DEFAULT_WAL_RECEIVE_CHECK_TIMEOUT },
{ .intminval = 1 },
{},
{}
},
/* ====================
* node rejoin settings
* ====================
*/
/* node_rejoin_timeout */
{
"node_rejoin_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.node_rejoin_timeout },
{ .intdefault = DEFAULT_NODE_REJOIN_TIMEOUT },
{ .intminval = 1 },
{},
{}
},
/* ===================
* node check settings
* ===================
*/
/* archive_ready_warning */
{
"archive_ready_warning",
CONFIG_INT,
{ .intptr = &config_file_options.archive_ready_warning },
{ .intdefault = DEFAULT_ARCHIVE_READY_WARNING },
{ .intminval = 1 },
{},
{}
},
/* archive_ready_critical */
{
"archive_ready_critical",
CONFIG_INT,
{ .intptr = &config_file_options.archive_ready_critical },
{ .intdefault = DEFAULT_ARCHIVE_READY_CRITICAL },
{ .intminval = 1 },
{},
{}
},
/* replication_lag_warning */
{
"replication_lag_warning",
CONFIG_INT,
{ .intptr = &config_file_options.replication_lag_warning },
{ .intdefault = DEFAULT_REPLICATION_LAG_WARNING },
{ .intminval = 1 },
{},
{}
},
/* replication_lag_critical */
{
"replication_lag_critical",
CONFIG_INT,
{ .intptr = &config_file_options.replication_lag_critical },
{ .intdefault = DEFAULT_REPLICATION_LAG_CRITICAL },
{ .intminval = 1 },
{},
{}
},
/* ================
* witness settings
* ================
*/
/* witness_sync_interval */
{
"witness_sync_interval",
CONFIG_INT,
{ .intptr = &config_file_options.witness_sync_interval },
{ .intdefault = DEFAULT_WITNESS_SYNC_INTERVAL },
{ .intminval = 1 },
{},
{}
},
/* ================
* repmgrd settings
* ================
*/
/* failover */
{
"failover",
CONFIG_FAILOVER_MODE,
{ .failovermodeptr = &config_file_options.failover },
{ .failovermodedefault = FAILOVER_MANUAL },
{},
{},
{}
},
/* location */
{
"location",
CONFIG_STRING,
{ .strptr = config_file_options.location },
{ .strdefault = DEFAULT_LOCATION },
{},
{ .strmaxlen = sizeof(config_file_options.location) },
{}
},
/* priority */
{
"priority",
CONFIG_INT,
{ .intptr = &config_file_options.priority },
{ .intdefault = DEFAULT_PRIORITY, },
{ .intminval = 0 },
{},
{}
},
/* promote_command */
{
"promote_command",
CONFIG_STRING,
{ .strptr = config_file_options.promote_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.promote_command) },
{}
},
/* follow_command */
{
"follow_command",
CONFIG_STRING,
{ .strptr = config_file_options.follow_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.follow_command) },
{}
},
/* monitor_interval_secs */
{
"monitor_interval_secs",
CONFIG_INT,
{ .intptr = &config_file_options.monitor_interval_secs },
{ .intdefault = DEFAULT_MONITORING_INTERVAL },
{ .intminval = 1 },
{},
{}
},
/* reconnect_attempts */
{
"reconnect_attempts",
CONFIG_INT,
{ .intptr = &config_file_options.reconnect_attempts },
{ .intdefault = DEFAULT_RECONNECTION_ATTEMPTS },
{ .intminval = 0 },
{},
{}
},
/* reconnect_interval */
{
"reconnect_interval",
CONFIG_INT,
{ .intptr = &config_file_options.reconnect_interval },
{ .intdefault = DEFAULT_RECONNECTION_INTERVAL },
{ .intminval = 0 },
{},
{}
},
/* monitoring_history */
{
"monitoring_history",
CONFIG_BOOL,
{ .boolptr = &config_file_options.monitoring_history },
{ .booldefault = DEFAULT_MONITORING_HISTORY },
{},
{},
{}
},
/* degraded_monitoring_timeout */
{
"degraded_monitoring_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.degraded_monitoring_timeout },
{ .intdefault = DEFAULT_DEGRADED_MONITORING_TIMEOUT },
{ .intminval = -1 },
{},
{}
},
/* async_query_timeout */
{
"async_query_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.async_query_timeout },
{ .intdefault = DEFAULT_ASYNC_QUERY_TIMEOUT },
{ .intminval = 0 },
{},
{}
},
/* primary_notification_timeout */
{
"primary_notification_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.primary_notification_timeout },
{ .intdefault = DEFAULT_PRIMARY_NOTIFICATION_TIMEOUT },
{ .intminval = 0 },
{},
{}
},
/* repmgrd_standby_startup_timeout */
{
"repmgrd_standby_startup_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.repmgrd_standby_startup_timeout },
{ .intdefault = DEFAULT_REPMGRD_STANDBY_STARTUP_TIMEOUT },
{ .intminval = 0 },
{},
{}
},
/* repmgrd_pid_file */
{
"repmgrd_pid_file",
CONFIG_STRING,
{ .strptr = config_file_options.repmgrd_pid_file },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.repmgrd_pid_file) },
{ .postprocess_func = &repmgr_canonicalize_path }
},
/* repmgrd_exit_on_inactive_node */
{
"repmgrd_exit_on_inactive_node",
CONFIG_BOOL,
{ .boolptr = &config_file_options.repmgrd_exit_on_inactive_node},
{ .booldefault = DEFAULT_REPMGRD_EXIT_ON_INACTIVE_NODE },
{},
{},
{}
},
/* standby_disconnect_on_failover */
{
"standby_disconnect_on_failover",
CONFIG_BOOL,
{ .boolptr = &config_file_options.standby_disconnect_on_failover },
{ .booldefault = DEFAULT_STANDBY_DISCONNECT_ON_FAILOVER },
{},
{},
{}
},
/* sibling_nodes_disconnect_timeout */
{
"sibling_nodes_disconnect_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.sibling_nodes_disconnect_timeout },
{ .intdefault = DEFAULT_SIBLING_NODES_DISCONNECT_TIMEOUT },
{ .intminval = 0 },
{},
{}
},
/* connection_check_type */
{
"connection_check_type",
CONFIG_CONNECTION_CHECK_TYPE,
{ .checktypeptr = &config_file_options.connection_check_type },
{ .checktypedefault = DEFAULT_CONNECTION_CHECK_TYPE },
{},
{},
{}
},
/* primary_visibility_consensus */
{
"primary_visibility_consensus",
CONFIG_BOOL,
{ .boolptr = &config_file_options.primary_visibility_consensus },
{ .booldefault = DEFAULT_PRIMARY_VISIBILITY_CONSENSUS },
{},
{},
{}
},
/* always_promote */
{
"always_promote",
CONFIG_BOOL,
{ .boolptr = &config_file_options.always_promote },
{ .booldefault = DEFAULT_ALWAYS_PROMOTE },
{},
{},
{}
},
/* failover_validation_command */
{
"failover_validation_command",
CONFIG_STRING,
{ .strptr = config_file_options.failover_validation_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.failover_validation_command) },
{}
},
/* election_rerun_interval */
{
"election_rerun_interval",
CONFIG_INT,
{ .intptr = &config_file_options.election_rerun_interval },
{ .intdefault = DEFAULT_ELECTION_RERUN_INTERVAL },
{ .intminval = 1 },
{},
{}
},
/* child_nodes_check_interval */
{
"child_nodes_check_interval",
CONFIG_INT,
{ .intptr = &config_file_options.child_nodes_check_interval },
{ .intdefault = DEFAULT_CHILD_NODES_CHECK_INTERVAL },
{ .intminval = 1 },
{},
{}
},
/* child_nodes_disconnect_min_count */
{
"child_nodes_disconnect_min_count",
CONFIG_INT,
{ .intptr = &config_file_options.child_nodes_disconnect_min_count },
{ .intdefault = DEFAULT_CHILD_NODES_DISCONNECT_MIN_COUNT },
{ .intminval = -1 },
{},
{}
},
/* child_nodes_connected_min_count */
{
"child_nodes_connected_min_count",
CONFIG_INT,
{ .intptr = &config_file_options.child_nodes_connected_min_count },
{ .intdefault = DEFAULT_CHILD_NODES_CONNECTED_MIN_COUNT},
{ .intminval = -1 },
{},
{}
},
/* child_nodes_connected_include_witness */
{
"child_nodes_connected_include_witness",
CONFIG_BOOL,
{ .boolptr = &config_file_options.child_nodes_connected_include_witness },
{ .booldefault = DEFAULT_CHILD_NODES_CONNECTED_INCLUDE_WITNESS },
{},
{},
{}
},
/* child_nodes_disconnect_timeout */
{
"child_nodes_disconnect_timeout",
CONFIG_INT,
{ .intptr = &config_file_options.child_nodes_disconnect_timeout },
{ .intdefault = DEFAULT_CHILD_NODES_DISCONNECT_TIMEOUT },
{ .intminval = 0 },
{},
{}
},
/* child_nodes_disconnect_command */
{
"child_nodes_disconnect_command",
CONFIG_STRING,
{ .strptr = config_file_options.child_nodes_disconnect_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.child_nodes_disconnect_command) },
{}
},
/* ================
* service settings
* ================
*/
/* pg_ctl_options */
{
"pg_ctl_options",
CONFIG_STRING,
{ .strptr = config_file_options.pg_ctl_options },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.pg_ctl_options) },
{}
},
/* service_start_command */
{
"service_start_command",
CONFIG_STRING,
{ .strptr = config_file_options.service_start_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.service_start_command) },
{}
},
/* service_stop_command */
{
"service_stop_command",
CONFIG_STRING,
{ .strptr = config_file_options.service_stop_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.service_stop_command) },
{}
},
/* service_restart_command */
{
"service_restart_command",
CONFIG_STRING,
{ .strptr = config_file_options.service_restart_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.service_restart_command) },
{}
},
/* service_reload_command */
{
"service_reload_command",
CONFIG_STRING,
{ .strptr = config_file_options.service_reload_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.service_reload_command) },
{}
},
/* service_promote_command */
{
"service_promote_command",
CONFIG_STRING,
{ .strptr = config_file_options.service_promote_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.service_promote_command) },
{}
},
/* ========================
* repmgrd service settings
* ========================
*/
/* repmgrd_service_start_command */
{
"repmgrd_service_start_command",
CONFIG_STRING,
{ .strptr = config_file_options.repmgrd_service_start_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.repmgrd_service_start_command) },
{}
},
/* repmgrd_service_stop_command */
{
"repmgrd_service_stop_command",
CONFIG_STRING,
{ .strptr = config_file_options.repmgrd_service_stop_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.repmgrd_service_stop_command) },
{}
},
/* ===========================
* event notification settings
* ===========================
*/
/* event_notification_command */
{
"event_notification_command",
CONFIG_STRING,
{ .strptr = config_file_options.event_notification_command },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.event_notification_command) },
{}
},
{
"event_notifications",
CONFIG_EVENT_NOTIFICATION_LIST,
{ .notificationlistptr = &config_file_options.event_notifications },
{},
{},
{},
{}
},
/* ===============
* barman settings
* ===============
*/
/* barman_host */
{
"barman_host",
CONFIG_STRING,
{ .strptr = config_file_options.barman_host },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.barman_host) },
{}
},
/* barman_server */
{
"barman_server",
CONFIG_STRING,
{ .strptr = config_file_options.barman_server },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.barman_server) },
{}
},
/* barman_config */
{
"barman_config",
CONFIG_STRING,
{ .strptr = config_file_options.barman_config },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.barman_config) },
{}
},
/* ==================
* rsync/ssh settings
* ==================
*/
/* rsync_options */
{
"rsync_options",
CONFIG_STRING,
{ .strptr = config_file_options.rsync_options },
{ .strdefault = "" },
{},
{ .strmaxlen = sizeof(config_file_options.rsync_options) },
{}
},
/* ssh_options */
{
"ssh_options",
CONFIG_STRING,
{ .strptr = config_file_options.ssh_options },
{ .strdefault = DEFAULT_SSH_OPTIONS },
{},
{ .strmaxlen = sizeof(config_file_options.ssh_options) },
{}
},
/* ==================================
* undocumented experimental settings
* ==================================
*/
/* reconnect_loop_sync */
{
"reconnect_loop_sync",
CONFIG_BOOL,
{ .boolptr = &config_file_options.reconnect_loop_sync },
{ .booldefault = false },
{},
{},
{}
},
/* ==========================
* undocumented test settings
* ==========================
*/
/* promote_delay */
{
"promote_delay",
CONFIG_INT,
{ .intptr = &config_file_options.promote_delay },
{ .intdefault = 0 },
{ .intminval = 1 },
{},
{}
},
/* failover_delay */
{
"failover_delay",
CONFIG_INT,
{ .intptr = &config_file_options.failover_delay },
{ .intdefault = 0 },
{ .intminval = 1 },
{},
{}
},
{
"connection_check_query",
CONFIG_STRING,
{ .strptr = config_file_options.connection_check_query },
{ .strdefault = "SELECT 1" },
{},
{ .strmaxlen = sizeof(config_file_options.connection_check_query) },
{}
},
/* End-of-list marker */
{
NULL, CONFIG_INT, {}, {}, {}, {}, {}
}
};

View File

@@ -1,644 +0,0 @@
/*
* Scanner for the configuration file
*/
%{
#include <setjmp.h>
#include <sys/stat.h>
#include <dirent.h>
#include "repmgr.h"
#include "configfile.h"
/*
* flex emits a yy_fatal_error() function that it calls in response to
* critical errors like malloc failure, file I/O errors, and detection of
* internal inconsistency. That function prints a message and calls exit().
* Mutate it to instead call our handler, which jumps out of the parser.
*/
#undef fprintf
#define fprintf(file, fmt, msg) CONF_flex_fatal(msg)
enum
{
CONF_ID = 1,
CONF_STRING = 2,
CONF_INTEGER = 3,
CONF_REAL = 4,
CONF_EQUALS = 5,
CONF_UNQUOTED_STRING = 6,
CONF_QUALIFIED_ID = 7,
CONF_EOL = 99,
CONF_ERROR = 100
};
static unsigned int ConfigFileLineno;
static const char *CONF_flex_fatal_errmsg;
static sigjmp_buf *CONF_flex_fatal_jmp;
static char *CONF_scanstr(const char *s);
static int CONF_flex_fatal(const char *msg);
static bool ProcessConfigFile(const char *base_dir, const char *config_file, const char *calling_file, bool strict, int depth, KeyValueList *contents, ItemList *error_list, ItemList *warning_list);
static bool ProcessConfigFp(FILE *fp, const char *config_file, const char *calling_file, int depth, const char *base_dir, KeyValueList *contents, ItemList *error_list, ItemList *warning_list);
static bool ProcessConfigDirectory(const char *base_dir, const char *includedir, const char *calling_file, int depth, KeyValueList *contents, ItemList *error_list, ItemList *warning_list);
static char *AbsoluteConfigLocation(const char *base_dir, const char *location, const char *calling_file);
%}
%option 8bit
%option never-interactive
%option nodefault
%option noinput
%option nounput
%option noyywrap
%option warn
%option prefix="CONF_yy"
SIGN ("-"|"+")
DIGIT [0-9]
HEXDIGIT [0-9a-fA-F]
UNIT_LETTER [a-zA-Z]
INTEGER {SIGN}?({DIGIT}+|0x{HEXDIGIT}+){UNIT_LETTER}*
EXPONENT [Ee]{SIGN}?{DIGIT}+
REAL {SIGN}?{DIGIT}*"."{DIGIT}*{EXPONENT}?
LETTER [A-Za-z_\200-\377]
LETTER_OR_DIGIT [A-Za-z_0-9\200-\377]
ID {LETTER}{LETTER_OR_DIGIT}*
QUALIFIED_ID {ID}"."{ID}
UNQUOTED_STRING {LETTER}({LETTER_OR_DIGIT}|[-._:/])*
STRING \'([^'\\\n]|\\.|\'\')*\'
%%
\n ConfigFileLineno++; return CONF_EOL;
[ \t\r]+ /* eat whitespace */
#.* /* eat comment (.* matches anything until newline) */
{ID} return CONF_ID;
{QUALIFIED_ID} return CONF_QUALIFIED_ID;
{STRING} return CONF_STRING;
{UNQUOTED_STRING} return CONF_UNQUOTED_STRING;
{INTEGER} return CONF_INTEGER;
{REAL} return CONF_REAL;
= return CONF_EQUALS;
. return CONF_ERROR;
%%
extern bool
ProcessRepmgrConfigFile(const char *config_file, const char *base_dir, ItemList *error_list, ItemList *warning_list)
{
return ProcessConfigFile(base_dir, config_file, NULL, true, 0, NULL, error_list, warning_list);
}
extern bool
ProcessPostgresConfigFile(const char *config_file, const char *base_dir, bool strict, KeyValueList *contents, ItemList *error_list, ItemList *warning_list)
{
return ProcessConfigFile(base_dir, config_file, NULL, strict, 0, contents, error_list, warning_list);
}
static bool
ProcessConfigFile(const char *base_dir, const char *config_file, const char *calling_file, bool strict, int depth, KeyValueList *contents, ItemList *error_list, ItemList *warning_list)
{
char *abs_path;
bool success = true;
FILE *fp;
/*
* Reject file name that is all-blank (including empty), as that leads to
* confusion --- we'd try to read the containing directory as a file.
*/
if (strspn(config_file, " \t\r\n") == strlen(config_file))
{
return false;
}
/*
* Reject too-deep include nesting depth. This is just a safety check to
* avoid dumping core due to stack overflow if an include file loops back
* to itself. The maximum nesting depth is pretty arbitrary.
*/
if (depth > 10)
{
item_list_append_format(error_list,
_("could not open configuration file \"%s\": maximum nesting depth exceeded"),
config_file);
return false;
}
abs_path = AbsoluteConfigLocation(base_dir, config_file, calling_file);
/* Reject direct recursion */
if (calling_file && strcmp(abs_path, calling_file) == 0)
{
item_list_append_format(error_list,
_("configuration file recursion in \"%s\""),
calling_file);
pfree(abs_path);
return false;
}
fp = fopen(abs_path, "r");
if (!fp)
{
if (strict == false)
{
item_list_append_format(error_list,
"skipping configuration file \"%s\"",
abs_path);
}
else
{
item_list_append_format(error_list,
"could not open configuration file \"%s\": %s",
abs_path,
strerror(errno));
success = false;
}
}
else
{
success = ProcessConfigFp(fp, abs_path, calling_file, depth + 1, base_dir, contents, error_list, warning_list);
}
free(abs_path);
return success;
}
static bool
ProcessConfigFp(FILE *fp, const char *config_file, const char *calling_file, int depth, const char *base_dir, KeyValueList *contents, ItemList *error_list, ItemList *warning_list)
{
volatile bool OK = true;
volatile YY_BUFFER_STATE lex_buffer = NULL;
sigjmp_buf flex_fatal_jmp;
int errorcount;
int token;
if (sigsetjmp(flex_fatal_jmp, 1) == 0)
{
CONF_flex_fatal_jmp = &flex_fatal_jmp;
}
else
{
/*
* Regain control after a fatal, internal flex error. It may have
* corrupted parser state. Consequently, abandon the file, but trust
* that the state remains sane enough for yy_delete_buffer().
*/
item_list_append_format(error_list,
"%s at file \"%s\" line %u",
CONF_flex_fatal_errmsg, config_file, ConfigFileLineno);
OK = false;
goto cleanup;
}
/*
* Parse
*/
ConfigFileLineno = 1;
errorcount = 0;
lex_buffer = yy_create_buffer(fp, YY_BUF_SIZE);
yy_switch_to_buffer(lex_buffer);
/* This loop iterates once per logical line */
while ((token = yylex()))
{
char *opt_name = NULL;
char *opt_value = NULL;
if (token == CONF_EOL) /* empty or comment line */
continue;
/* first token on line is option name */
if (token != CONF_ID && token != CONF_QUALIFIED_ID)
goto parse_error;
opt_name = pstrdup(yytext);
/* next we have an optional equal sign; discard if present */
token = yylex();
if (token == CONF_EQUALS)
token = yylex();
/* now we must have the option value */
if (token != CONF_ID &&
token != CONF_STRING &&
token != CONF_INTEGER &&
token != CONF_REAL &&
token != CONF_UNQUOTED_STRING)
goto parse_error;
if (token == CONF_STRING) /* strip quotes and escapes */
opt_value = CONF_scanstr(yytext);
else
opt_value = pstrdup(yytext);
/* now we'd like an end of line, or possibly EOF */
token = yylex();
if (token != CONF_EOL)
{
if (token != 0)
goto parse_error;
/* treat EOF like \n for line numbering purposes, cf bug 4752 */
ConfigFileLineno++;
}
/* Handle include files */
if (base_dir != NULL && strcasecmp(opt_name, "include_dir") == 0)
{
/*
* An include_dir directive isn't a variable and should be
* processed immediately.
*/
if (!ProcessConfigDirectory(base_dir, opt_value, config_file,
depth + 1, contents,
error_list, warning_list))
OK = false;
yy_switch_to_buffer(lex_buffer);
pfree(opt_name);
pfree(opt_value);
}
else if (base_dir != NULL && strcasecmp(opt_name, "include_if_exists") == 0)
{
if (!ProcessConfigFile(base_dir, opt_value, config_file,
false, depth + 1, contents,
error_list, warning_list))
OK = false;
yy_switch_to_buffer(lex_buffer);
pfree(opt_name);
pfree(opt_value);
}
else if (base_dir != NULL && strcasecmp(opt_name, "include") == 0)
{
if (!ProcessConfigFile(base_dir, opt_value, config_file,
true, depth + 1, contents,
error_list, warning_list))
OK = false;
yy_switch_to_buffer(lex_buffer);
pfree(opt_name);
pfree(opt_value);
}
else
{
/* OK, process the option name and value */
if (contents != NULL)
{
key_value_list_replace_or_set(contents,
opt_name,
opt_value);
}
else
{
parse_configuration_item(error_list,
warning_list,
opt_name,
opt_value);
}
}
/* break out of loop if read EOF, else loop for next line */
if (token == 0)
break;
continue;
parse_error:
/* release storage if we allocated any on this line */
if (opt_name)
pfree(opt_name);
if (opt_value)
pfree(opt_value);
/* report the error */
if (token == CONF_EOL || token == 0)
{
item_list_append_format(error_list,
_("syntax error in file \"%s\" line %u, near end of line"),
config_file, ConfigFileLineno - 1);
}
else
{
item_list_append_format(error_list,
_("syntax error in file \"%s\" line %u, near token \"%s\""),
config_file, ConfigFileLineno, yytext);
}
OK = false;
errorcount++;
/*
* To avoid producing too much noise when fed a totally bogus file,
* give up after 100 syntax errors per file (an arbitrary number).
* Also, if we're only logging the errors at DEBUG level anyway, might
* as well give up immediately. (This prevents postmaster children
* from bloating the logs with duplicate complaints.)
*/
if (errorcount >= 100)
{
fprintf(stderr,
_("too many syntax errors found, abandoning file \"%s\"\n"),
config_file);
break;
}
/* resync to next end-of-line or EOF */
while (token != CONF_EOL && token != 0)
token = yylex();
/* break out of loop on EOF */
if (token == 0)
break;
}
cleanup:
yy_delete_buffer(lex_buffer);
return OK;
}
/*
* Read and parse all config files in a subdirectory in alphabetical order
*
* includedir is the absolute or relative path to the subdirectory to scan.
*
* See ProcessConfigFp for further details.
*/
static bool
ProcessConfigDirectory(const char *base_dir, const char *includedir, const char *calling_file, int depth, KeyValueList *contents, ItemList *error_list, ItemList *warning_list)
{
char *directory;
DIR *d;
struct dirent *de;
char **filenames;
int num_filenames;
int size_filenames;
bool status;
/*
* Reject directory name that is all-blank (including empty), as that
* leads to confusion --- we'd read the containing directory, typically
* resulting in recursive inclusion of the same file(s).
*/
if (strspn(includedir, " \t\r\n") == strlen(includedir))
{
item_list_append_format(error_list,
_("empty configuration directory name: \"%s\""),
includedir);
return false;
}
directory = AbsoluteConfigLocation(base_dir, includedir, calling_file);
d = opendir(directory);
if (d == NULL)
{
item_list_append_format(error_list,
_("could not open configuration directory \"%s\": %s"),
directory,
strerror(errno));
status = false;
goto cleanup;
}
/*
* Read the directory and put the filenames in an array, so we can sort
* them prior to processing the contents.
*/
size_filenames = 32;
filenames = (char **) palloc(size_filenames * sizeof(char *));
num_filenames = 0;
while ((de = readdir(d)) != NULL)
{
struct stat st;
char filename[MAXPGPATH];
/*
* Only parse files with names ending in ".conf". Explicitly reject
* files starting with ".". This excludes things like "." and "..",
* as well as typical hidden files, backup files, and editor debris.
*/
if (strlen(de->d_name) < 6)
continue;
if (de->d_name[0] == '.')
continue;
if (strcmp(de->d_name + strlen(de->d_name) - 5, ".conf") != 0)
continue;
join_path_components(filename, directory, de->d_name);
canonicalize_path(filename);
if (stat(filename, &st) == 0)
{
if (!S_ISDIR(st.st_mode))
{
/* Add file to array, increasing its size in blocks of 32 */
if (num_filenames >= size_filenames)
{
size_filenames += 32;
filenames = (char **) repalloc(filenames,
size_filenames * sizeof(char *));
}
filenames[num_filenames] = pstrdup(filename);
num_filenames++;
}
}
else
{
/*
* stat does not care about permissions, so the most likely reason
* a file can't be accessed now is if it was removed between the
* directory listing and now.
*/
item_list_append_format(error_list,
_("could not stat file \"%s\": %s"),
filename, strerror(errno));
status = false;
goto cleanup;
}
}
if (num_filenames > 0)
{
int i;
qsort(filenames, num_filenames, sizeof(char *), pg_qsort_strcmp);
for (i = 0; i < num_filenames; i++)
{
if (!ProcessConfigFile(base_dir, filenames[i], calling_file,
true, depth, contents,
error_list, warning_list))
{
status = false;
goto cleanup;
}
}
}
status = true;
cleanup:
if (d)
closedir(d);
pfree(directory);
return status;
}
/*
* scanstr
*
* Strip the quotes surrounding the given string, and collapse any embedded
* '' sequences and backslash escapes.
*
* the string returned is palloc'd and should eventually be pfree'd by the
* caller.
*/
static char *
CONF_scanstr(const char *s)
{
char *newStr;
int len,
i,
j;
Assert(s != NULL && s[0] == '\'');
len = strlen(s);
Assert(s != NULL);
Assert(len >= 2);
Assert(s[len - 1] == '\'');
/* Skip the leading quote; we'll handle the trailing quote below */
s++, len--;
/* Since len still includes trailing quote, this is enough space */
newStr = palloc(len);
for (i = 0, j = 0; i < len; i++)
{
if (s[i] == '\\')
{
i++;
switch (s[i])
{
case 'b':
newStr[j] = '\b';
break;
case 'f':
newStr[j] = '\f';
break;
case 'n':
newStr[j] = '\n';
break;
case 'r':
newStr[j] = '\r';
break;
case 't':
newStr[j] = '\t';
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
{
int k;
long octVal = 0;
for (k = 0;
s[i + k] >= '0' && s[i + k] <= '7' && k < 3;
k++)
octVal = (octVal << 3) + (s[i + k] - '0');
i += k - 1;
newStr[j] = ((char) octVal);
}
break;
default:
newStr[j] = s[i];
break;
} /* switch */
}
else if (s[i] == '\'' && s[i + 1] == '\'')
{
/* doubled quote becomes just one quote */
newStr[j] = s[++i];
}
else
newStr[j] = s[i];
j++;
}
/* We copied the ending quote to newStr, so replace with \0 */
Assert(j > 0 && j <= len);
newStr[--j] = '\0';
return newStr;
}
/*
* Given a configuration file or directory location that may be a relative
* path, return an absolute one. We consider the location to be relative to
* the directory holding the calling file, or to DataDir if no calling file.
*/
static char *
AbsoluteConfigLocation(const char *base_dir, const char *location, const char *calling_file)
{
char abs_path[MAXPGPATH];
if (is_absolute_path(location))
return strdup(location);
if (calling_file != NULL)
{
strlcpy(abs_path, calling_file, sizeof(abs_path));
get_parent_directory(abs_path);
join_path_components(abs_path, abs_path, location);
canonicalize_path(abs_path);
}
else if (base_dir != NULL)
{
join_path_components(abs_path, base_dir, location);
canonicalize_path(abs_path);
}
else
{
strlcpy(abs_path, location, sizeof(abs_path));
}
return strdup(abs_path);
}
/*
* Flex fatal errors bring us here. Stash the error message and jump back to
* ParseConfigFp(). Assume all msg arguments point to string constants; this
* holds for flex 2.5.31 (earliest we support) and flex 2.5.35 (latest as of
* this writing). Otherwise, we would need to copy the message.
*
* We return "int" since this takes the place of calls to fprintf().
*/
static int
CONF_flex_fatal(const char *msg)
{
CONF_flex_fatal_errmsg = msg;
siglongjmp(*CONF_flex_fatal_jmp, 1);
return 0; /* keep compiler quiet */
}

File diff suppressed because it is too large Load Diff

View File

@@ -1,7 +1,7 @@
/* /*
* configfile.h * configfile.h
* *
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
@@ -28,12 +28,6 @@
/* magic number for use in t_recovery_conf */ /* magic number for use in t_recovery_conf */
#define TARGET_TIMELINE_LATEST 0 #define TARGET_TIMELINE_LATEST 0
/*
* This is defined in src/include/utils.h, however it's not practical
* to include that from a frontend application.
*/
#define PG_AUTOCONF_FILENAME "postgresql.auto.conf"
extern bool config_file_found; extern bool config_file_found;
extern char config_file_path[MAXPGPATH]; extern char config_file_path[MAXPGPATH];
@@ -50,11 +44,6 @@ typedef enum
CHECK_CONNECTION CHECK_CONNECTION
} ConnectionCheckType; } ConnectionCheckType;
typedef enum
{
REPLICATION_TYPE_PHYSICAL
} ReplicationType;
typedef struct EventNotificationListCell typedef struct EventNotificationListCell
{ {
struct EventNotificationListCell *next; struct EventNotificationListCell *next;
@@ -83,58 +72,6 @@ typedef struct TablespaceList
} TablespaceList; } TablespaceList;
typedef enum
{
CONFIG_BOOL,
CONFIG_INT,
CONFIG_STRING,
CONFIG_FAILOVER_MODE,
CONFIG_CONNECTION_CHECK_TYPE,
CONFIG_EVENT_NOTIFICATION_LIST,
CONFIG_TABLESPACE_MAPPING,
CONFIG_REPLICATION_TYPE
} ConfigItemType;
typedef struct ConfigFileSetting
{
const char *name;
ConfigItemType type;
union
{
int *intptr;
char *strptr;
bool *boolptr;
failover_mode_opt *failovermodeptr;
ConnectionCheckType *checktypeptr;
EventNotificationList *notificationlistptr;
TablespaceList *tablespacemappingptr;
ReplicationType *replicationtypeptr;
} val;
union {
int intdefault;
const char *strdefault;
bool booldefault;
failover_mode_opt failovermodedefault;
ConnectionCheckType checktypedefault;
ReplicationType replicationtypedefault;
} defval;
union {
int intminval;
} minval;
union {
int strmaxlen;
} maxval;
struct {
void (*process_func)(const char *, const char *, char *, ItemList *errors);
void (*postprocess_func)(const char *, const char *, char *, ItemList *errors);
bool *providedptr;
} process;
} ConfigFileSetting;
/* Declare the main configfile structure for client applications */
extern ConfigFileSetting config_file_settings[];
typedef struct typedef struct
{ {
/* node information */ /* node information */
@@ -146,7 +83,7 @@ typedef struct
char config_directory[MAXPGPATH]; char config_directory[MAXPGPATH];
char pg_bindir[MAXPGPATH]; char pg_bindir[MAXPGPATH];
char repmgr_bindir[MAXPGPATH]; char repmgr_bindir[MAXPGPATH];
ReplicationType replication_type; int replication_type;
/* log settings */ /* log settings */
char log_level[MAXLEN]; char log_level[MAXLEN];
@@ -172,7 +109,6 @@ typedef struct
/* standby follow settings */ /* standby follow settings */
int primary_follow_timeout; int primary_follow_timeout;
int standby_follow_timeout; int standby_follow_timeout;
bool standby_follow_restart;
/* standby switchover settings */ /* standby switchover settings */
int shutdown_check_timeout; int shutdown_check_timeout;
@@ -206,12 +142,10 @@ typedef struct
int primary_notification_timeout; int primary_notification_timeout;
int repmgrd_standby_startup_timeout; int repmgrd_standby_startup_timeout;
char repmgrd_pid_file[MAXPGPATH]; char repmgrd_pid_file[MAXPGPATH];
bool repmgrd_exit_on_inactive_node;
bool standby_disconnect_on_failover; bool standby_disconnect_on_failover;
int sibling_nodes_disconnect_timeout; int sibling_nodes_disconnect_timeout;
ConnectionCheckType connection_check_type; ConnectionCheckType connection_check_type;
bool primary_visibility_consensus; bool primary_visibility_consensus;
bool always_promote;
char failover_validation_command[MAXPGPATH]; char failover_validation_command[MAXPGPATH];
int election_rerun_interval; int election_rerun_interval;
int child_nodes_check_interval; int child_nodes_check_interval;
@@ -221,6 +155,10 @@ typedef struct
int child_nodes_disconnect_timeout; int child_nodes_disconnect_timeout;
char child_nodes_disconnect_command[MAXPGPATH]; char child_nodes_disconnect_command[MAXPGPATH];
/* BDR settings */
bool bdr_local_monitoring_only;
bool bdr_recovery_timeout;
/* service settings */ /* service settings */
char pg_ctl_options[MAXLEN]; char pg_ctl_options[MAXLEN];
char service_start_command[MAXPGPATH]; char service_start_command[MAXPGPATH];
@@ -247,35 +185,79 @@ typedef struct
char rsync_options[MAXLEN]; char rsync_options[MAXLEN];
char ssh_options[MAXLEN]; char ssh_options[MAXLEN];
/* /* undocumented test settings */
* undocumented settings
*
* These settings are for testing or experimental features
* and may be changed without notice.
*/
/* experimental settings */
bool reconnect_loop_sync;
/* test settings */
int promote_delay; int promote_delay;
int failover_delay;
char connection_check_query[MAXLEN];
} t_configuration_options; } t_configuration_options;
/*
* The following will initialize the structure with a minimal set of options;
* actual defaults are set in parse_config() before parsing the configuration file
*/
#define T_CONFIGURATION_OPTIONS_INITIALIZER { \
/* node information */ \
UNKNOWN_NODE_ID, "", "", "", "", "", "", "", REPLICATION_TYPE_PHYSICAL, \
/* log settings */ \
"", "", "", DEFAULT_LOG_STATUS_INTERVAL, \
/* standby clone settings */ \
false, "", "", { NULL, NULL }, "", false, "", false, "", \
/* standby promote settings */ \
DEFAULT_PROMOTE_CHECK_TIMEOUT, DEFAULT_PROMOTE_CHECK_INTERVAL, \
/* standby follow settings */ \
DEFAULT_PRIMARY_FOLLOW_TIMEOUT, \
DEFAULT_STANDBY_FOLLOW_TIMEOUT, \
/* standby switchover settings */ \
DEFAULT_SHUTDOWN_CHECK_TIMEOUT, \
DEFAULT_STANDBY_RECONNECT_TIMEOUT, \
DEFAULT_WAL_RECEIVE_CHECK_TIMEOUT, \
/* node rejoin settings */ \
DEFAULT_NODE_REJOIN_TIMEOUT, \
/* node check settings */ \
DEFAULT_ARCHIVE_READY_WARNING, DEFAULT_ARCHIVE_READY_CRITICAL, \
DEFAULT_REPLICATION_LAG_WARNING, DEFAULT_REPLICATION_LAG_CRITICAL, \
/* witness settings */ \
DEFAULT_WITNESS_SYNC_INTERVAL, \
/* repmgrd settings */ \
FAILOVER_MANUAL, DEFAULT_LOCATION, DEFAULT_PRIORITY, "", "", \
DEFAULT_MONITORING_INTERVAL, \
DEFAULT_RECONNECTION_ATTEMPTS, \
DEFAULT_RECONNECTION_INTERVAL, \
false, -1, \
DEFAULT_ASYNC_QUERY_TIMEOUT, \
DEFAULT_PRIMARY_NOTIFICATION_TIMEOUT, \
-1, "", false, DEFAULT_SIBLING_NODES_DISCONNECT_TIMEOUT, \
CHECK_PING, true, "", DEFAULT_ELECTION_RERUN_INTERVAL, \
DEFAULT_CHILD_NODES_CHECK_INTERVAL, \
DEFAULT_CHILD_NODES_DISCONNECT_MIN_COUNT, \
DEFAULT_CHILD_NODES_CONNECTED_MIN_COUNT, \
DEFAULT_CHILD_NODES_CONNECTED_INCLUDE_WITNESS, \
DEFAULT_CHILD_NODES_DISCONNECT_TIMEOUT, "", \
/* BDR settings */ \
false, DEFAULT_BDR_RECOVERY_TIMEOUT, \
/* service settings */ \
"", "", "", "", "", "", \
/* repmgrd service settings */ \
"", "", \
/* event notification settings */ \
"", "", { NULL, NULL }, \
/* barman settings */ \
"", "", "", \
/* rsync/ssh settings */ \
"", "", \
/* undocumented test settings */ \
0 \
}
/* Declare the main configfile structure for client applications */
extern t_configuration_options config_file_options;
typedef struct typedef struct
{ {
char slot[MAXLEN]; char slot[MAXLEN];
char wal_method[MAXLEN]; char wal_method[MAXLEN];
char waldir[MAXPGPATH];
bool no_slot; /* from PostgreSQL 10 */ bool no_slot; /* from PostgreSQL 10 */
} t_basebackup_options; } t_basebackup_options;
#define T_BASEBACKUP_OPTIONS_INITIALIZER { "", "", "", false } #define T_BASEBACKUP_OPTIONS_INITIALIZER { "", "", false }
typedef enum typedef enum
@@ -332,11 +314,8 @@ typedef struct
void set_progname(const char *argv0); void set_progname(const char *argv0);
const char *progname(void); const char *progname(void);
void load_config(const char *config_file, bool verbose, bool terse, char *argv0); void load_config(const char *config_file, bool verbose, bool terse, t_configuration_options *options, char *argv0);
bool reload_config(t_server_type server_type); bool reload_config(t_configuration_options *orig_options, t_server_type server_type);
void dump_config(void);
void parse_configuration_item(ItemList *error_list, ItemList *warning_list, const char *name, const char *value);
bool parse_recovery_conf(const char *data_dir, t_recovery_conf *conf); bool parse_recovery_conf(const char *data_dir, t_recovery_conf *conf);
@@ -349,9 +328,6 @@ int repmgr_atoi(const char *s,
ItemList *error_list, ItemList *error_list,
int minval); int minval);
void parse_time_unit_parameter(const char *name, const char *value, char *dest, ItemList *errors);
void repmgr_canonicalize_path(const char *name, const char *value, char *config_item, ItemList *errors);
bool parse_pg_basebackup_options(const char *pg_basebackup_options, bool parse_pg_basebackup_options(const char *pg_basebackup_options,
t_basebackup_options *backup_options, t_basebackup_options *backup_options,
int server_version_num, int server_version_num,
@@ -359,21 +335,11 @@ bool parse_pg_basebackup_options(const char *pg_basebackup_options,
int parse_output_to_argv(const char *string, char ***argv_array); int parse_output_to_argv(const char *string, char ***argv_array);
void free_parsed_argv(char ***argv_array); void free_parsed_argv(char ***argv_array);
const char *format_failover_mode(failover_mode_opt failover);
/* called by repmgr-client and repmgrd */ /* called by repmgr-client and repmgrd */
void exit_with_cli_errors(ItemList *error_list, const char *repmgr_command); void exit_with_cli_errors(ItemList *error_list, const char *repmgr_command);
void print_item_list(ItemList *item_list); void print_item_list(ItemList *item_list);
const char *print_replication_type(ReplicationType type);
const char *print_connection_check_type(ConnectionCheckType type); const char *print_connection_check_type(ConnectionCheckType type);
char *print_event_notification_list(EventNotificationList *list);
char *print_tablespace_mapping(TablespaceList *tablespacemappingptr);
extern bool modify_auto_conf(const char *data_dir, KeyValueList *items);
extern bool ProcessRepmgrConfigFile(const char *config_file, const char *base_dir, ItemList *error_list, ItemList *warning_list);
extern bool ProcessPostgresConfigFile(const char *config_file, const char *base_dir, bool strict, KeyValueList *contents, ItemList *error_list, ItemList *warning_list);
#endif /* _REPMGR_CONFIGFILE_H_ */ #endif /* _REPMGR_CONFIGFILE_H_ */

160
configure vendored
View File

@@ -1,6 +1,6 @@
#! /bin/sh #! /bin/sh
# Guess values for system-dependent variables and create Makefiles. # Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.69 for repmgr 5.3.0. # Generated by GNU Autoconf 2.69 for repmgr 4.4.
# #
# Report bugs to <repmgr@googlegroups.com>. # Report bugs to <repmgr@googlegroups.com>.
# #
@@ -11,7 +11,7 @@
# This configure script is free software; the Free Software Foundation # This configure script is free software; the Free Software Foundation
# gives unlimited permission to copy, distribute and modify it. # gives unlimited permission to copy, distribute and modify it.
# #
# Copyright (c) 2010-2021, EnterpriseDB Corporation # Copyright (c) 2010-2019, 2ndQuadrant Ltd.
## -------------------- ## ## -------------------- ##
## M4sh Initialization. ## ## M4sh Initialization. ##
## -------------------- ## ## -------------------- ##
@@ -582,16 +582,13 @@ MAKEFLAGS=
# Identity of this package. # Identity of this package.
PACKAGE_NAME='repmgr' PACKAGE_NAME='repmgr'
PACKAGE_TARNAME='repmgr' PACKAGE_TARNAME='repmgr'
PACKAGE_VERSION='5.3.0' PACKAGE_VERSION='4.4'
PACKAGE_STRING='repmgr 5.3.0' PACKAGE_STRING='repmgr 4.4'
PACKAGE_BUGREPORT='repmgr@googlegroups.com' PACKAGE_BUGREPORT='repmgr@googlegroups.com'
PACKAGE_URL='https://repmgr.org/' PACKAGE_URL='https://repmgr.org/'
ac_subst_vars='LTLIBOBJS ac_subst_vars='LTLIBOBJS
LIBOBJS LIBOBJS
HAVE_SED
HAVE_GSED
HAVE_GNUSED
vpath_build vpath_build
SED SED
PG_CONFIG PG_CONFIG
@@ -1181,7 +1178,7 @@ if test "$ac_init_help" = "long"; then
# Omit some internal or obsolete options to make the list less imposing. # Omit some internal or obsolete options to make the list less imposing.
# This message is too long to be a string in the A/UX 3.1 sh. # This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF cat <<_ACEOF
\`configure' configures repmgr 5.3.0 to adapt to many kinds of systems. \`configure' configures repmgr 4.4 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]... Usage: $0 [OPTION]... [VAR=VALUE]...
@@ -1242,7 +1239,7 @@ fi
if test -n "$ac_init_help"; then if test -n "$ac_init_help"; then
case $ac_init_help in case $ac_init_help in
short | recursive ) echo "Configuration of repmgr 5.3.0:";; short | recursive ) echo "Configuration of repmgr 4.4:";;
esac esac
cat <<\_ACEOF cat <<\_ACEOF
@@ -1316,14 +1313,14 @@ fi
test -n "$ac_init_help" && exit $ac_status test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then if $ac_init_version; then
cat <<\_ACEOF cat <<\_ACEOF
repmgr configure 5.3.0 repmgr configure 4.4
generated by GNU Autoconf 2.69 generated by GNU Autoconf 2.69
Copyright (C) 2012 Free Software Foundation, Inc. Copyright (C) 2012 Free Software Foundation, Inc.
This configure script is free software; the Free Software Foundation This configure script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it. gives unlimited permission to copy, distribute and modify it.
Copyright (c) 2010-2021, EnterpriseDB Corporation Copyright (c) 2010-2019, 2ndQuadrant Ltd.
_ACEOF _ACEOF
exit exit
fi fi
@@ -1335,7 +1332,7 @@ cat >config.log <<_ACEOF
This file contains any messages produced by compilers while This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake. running configure, to aid debugging if configure makes a mistake.
It was created by repmgr $as_me 5.3.0, which was It was created by repmgr $as_me 4.4, which was
generated by GNU Autoconf 2.69. Invocation command line was generated by GNU Autoconf 2.69. Invocation command line was
$ $0 $@ $ $0 $@
@@ -1811,11 +1808,11 @@ fi
pgac_pg_config_version=$($PG_CONFIG --version 2>/dev/null) pgac_pg_config_version=$($PG_CONFIG --version 2>/dev/null)
major_version_num=$(echo "$pgac_pg_config_version"| major_version_num=$(echo "$pgac_pg_config_version"|
$SED -e 's/^[^0-9]\+ \([0-9]\{1,2\}\).*$/\1/') $SED -e 's/^PostgreSQL \([0-9]\{1,2\}\).*$/\1/')
if test "$major_version_num" -lt '10'; then if test "$major_version_num" -lt '10'; then
version_num=$(echo "$pgac_pg_config_version"| version_num=$(echo "$pgac_pg_config_version"|
$SED -e 's/^[^0-9]\+ \([0-9]*\)\.\([0-9]*\)\([a-zA-Z0-9.]*\)$/\1.\2/') $SED -e 's/^PostgreSQL \([0-9]*\)\.\([0-9]*\)\([a-zA-Z0-9.]*\)$/\1.\2/')
if test -z "$version_num"; then if test -z "$version_num"; then
as_fn_error $? "could not detect the PostgreSQL version, wrong or broken pg_config?" "$LINENO" 5 as_fn_error $? "could not detect the PostgreSQL version, wrong or broken pg_config?" "$LINENO" 5
@@ -1824,12 +1821,12 @@ if test "$major_version_num" -lt '10'; then
version_num_int=$(echo "$version_num"| version_num_int=$(echo "$version_num"|
$SED -e 's/^\([0-9]*\)\.\([0-9]*\)$/\1\2/') $SED -e 's/^\([0-9]*\)\.\([0-9]*\)$/\1\2/')
if test "$version_num_int" -lt '94'; then if test "$version_num_int" -lt '93'; then
as_fn_error $? "repmgr is not compatible with detected PostgreSQL version: $version_num" "$LINENO" 5 as_fn_error $? "repmgr is not compatible with detected PostgreSQL version: $version_num" "$LINENO" 5
fi fi
else else
version_num=$(echo "$pgac_pg_config_version"| version_num=$(echo "$pgac_pg_config_version"|
$SED -e 's/^[^0-9]\+ \(.\+\)$/\1/') $SED -e 's/^PostgreSQL \(.\+\)$/\1/')
if test -z "$version_num"; then if test -z "$version_num"; then
as_fn_error $? "could not detect the PostgreSQL version, wrong or broken pg_config?" "$LINENO" 5 as_fn_error $? "could not detect the PostgreSQL version, wrong or broken pg_config?" "$LINENO" 5
@@ -1850,133 +1847,6 @@ else
fi fi
# Extract the first word of "gnused", so it can be a program name with args.
set dummy gnused; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
if ${ac_cv_prog_HAVE_GNUSED+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$HAVE_GNUSED"; then
ac_cv_prog_HAVE_GNUSED="$HAVE_GNUSED" # Let the user override the test.
else
as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH
do
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_HAVE_GNUSED="yes"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
fi
done
done
IFS=$as_save_IFS
test -z "$ac_cv_prog_HAVE_GNUSED" && ac_cv_prog_HAVE_GNUSED="no"
fi
fi
HAVE_GNUSED=$ac_cv_prog_HAVE_GNUSED
if test -n "$HAVE_GNUSED"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $HAVE_GNUSED" >&5
$as_echo "$HAVE_GNUSED" >&6; }
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
# Extract the first word of "gsed", so it can be a program name with args.
set dummy gsed; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
if ${ac_cv_prog_HAVE_GSED+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$HAVE_GSED"; then
ac_cv_prog_HAVE_GSED="$HAVE_GSED" # Let the user override the test.
else
as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH
do
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_HAVE_GSED="yes"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
fi
done
done
IFS=$as_save_IFS
test -z "$ac_cv_prog_HAVE_GSED" && ac_cv_prog_HAVE_GSED="no"
fi
fi
HAVE_GSED=$ac_cv_prog_HAVE_GSED
if test -n "$HAVE_GSED"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $HAVE_GSED" >&5
$as_echo "$HAVE_GSED" >&6; }
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
# Extract the first word of "sed", so it can be a program name with args.
set dummy sed; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
$as_echo_n "checking for $ac_word... " >&6; }
if ${ac_cv_prog_HAVE_SED+:} false; then :
$as_echo_n "(cached) " >&6
else
if test -n "$HAVE_SED"; then
ac_cv_prog_HAVE_SED="$HAVE_SED" # Let the user override the test.
else
as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH
do
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_HAVE_SED="yes"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
fi
done
done
IFS=$as_save_IFS
test -z "$ac_cv_prog_HAVE_SED" && ac_cv_prog_HAVE_SED="no"
fi
fi
HAVE_SED=$ac_cv_prog_HAVE_SED
if test -n "$HAVE_SED"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $HAVE_SED" >&5
$as_echo "$HAVE_SED" >&6; }
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
fi
if test "$HAVE_GNUSED" = yes; then
SED=gnused
else
if test "$HAVE_GSED" = yes; then
SED=gsed
else
SED=sed
fi
fi
ac_config_files="$ac_config_files Makefile" ac_config_files="$ac_config_files Makefile"
ac_config_files="$ac_config_files Makefile.global" ac_config_files="$ac_config_files Makefile.global"
@@ -2487,7 +2357,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
# report actual input values of CONFIG_FILES etc. instead of their # report actual input values of CONFIG_FILES etc. instead of their
# values after options handling. # values after options handling.
ac_log=" ac_log="
This file was extended by repmgr $as_me 5.3.0, which was This file was extended by repmgr $as_me 4.4, which was
generated by GNU Autoconf 2.69. Invocation command line was generated by GNU Autoconf 2.69. Invocation command line was
CONFIG_FILES = $CONFIG_FILES CONFIG_FILES = $CONFIG_FILES
@@ -2550,7 +2420,7 @@ _ACEOF
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`" ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
ac_cs_version="\\ ac_cs_version="\\
repmgr config.status 5.3.0 repmgr config.status 4.4
configured by $0, generated by GNU Autoconf 2.69, configured by $0, generated by GNU Autoconf 2.69,
with options \\"\$ac_cs_config\\" with options \\"\$ac_cs_config\\"

View File

@@ -1,6 +1,6 @@
AC_INIT([repmgr], [5.3.0], [repmgr@googlegroups.com], [repmgr], [https://repmgr.org/]) AC_INIT([repmgr], [4.4], [repmgr@googlegroups.com], [repmgr], [https://repmgr.org/])
AC_COPYRIGHT([Copyright (c) 2010-2021, EnterpriseDB Corporation]) AC_COPYRIGHT([Copyright (c) 2010-2019, 2ndQuadrant Ltd.])
AC_CONFIG_HEADER(config.h) AC_CONFIG_HEADER(config.h)
@@ -19,11 +19,11 @@ fi
pgac_pg_config_version=$($PG_CONFIG --version 2>/dev/null) pgac_pg_config_version=$($PG_CONFIG --version 2>/dev/null)
major_version_num=$(echo "$pgac_pg_config_version"| major_version_num=$(echo "$pgac_pg_config_version"|
$SED -e 's/^[[^0-9]]\+ \([[0-9]]\{1,2\}\).*$/\1/') $SED -e 's/^PostgreSQL \([[0-9]]\{1,2\}\).*$/\1/')
if test "$major_version_num" -lt '10'; then if test "$major_version_num" -lt '10'; then
version_num=$(echo "$pgac_pg_config_version"| version_num=$(echo "$pgac_pg_config_version"|
$SED -e 's/^[[^0-9]]\+ \([[0-9]]*\)\.\([[0-9]]*\)\([[a-zA-Z0-9.]]*\)$/\1.\2/') $SED -e 's/^PostgreSQL \([[0-9]]*\)\.\([[0-9]]*\)\([[a-zA-Z0-9.]]*\)$/\1.\2/')
if test -z "$version_num"; then if test -z "$version_num"; then
AC_MSG_ERROR([could not detect the PostgreSQL version, wrong or broken pg_config?]) AC_MSG_ERROR([could not detect the PostgreSQL version, wrong or broken pg_config?])
@@ -32,12 +32,12 @@ if test "$major_version_num" -lt '10'; then
version_num_int=$(echo "$version_num"| version_num_int=$(echo "$version_num"|
$SED -e 's/^\([[0-9]]*\)\.\([[0-9]]*\)$/\1\2/') $SED -e 's/^\([[0-9]]*\)\.\([[0-9]]*\)$/\1\2/')
if test "$version_num_int" -lt '94'; then if test "$version_num_int" -lt '93'; then
AC_MSG_ERROR([repmgr is not compatible with detected PostgreSQL version: $version_num]) AC_MSG_ERROR([repmgr is not compatible with detected PostgreSQL version: $version_num])
fi fi
else else
version_num=$(echo "$pgac_pg_config_version"| version_num=$(echo "$pgac_pg_config_version"|
$SED -e 's/^[[^0-9]]\+ \(.\+\)$/\1/') $SED -e 's/^PostgreSQL \(.\+\)$/\1/')
if test -z "$version_num"; then if test -z "$version_num"; then
AC_MSG_ERROR([could not detect the PostgreSQL version, wrong or broken pg_config?]) AC_MSG_ERROR([could not detect the PostgreSQL version, wrong or broken pg_config?])
@@ -57,22 +57,6 @@ else
fi fi
AC_SUBST(vpath_build) AC_SUBST(vpath_build)
AC_CHECK_PROG(HAVE_GNUSED,gnused,yes,no)
AC_CHECK_PROG(HAVE_GSED,gsed,yes,no)
AC_CHECK_PROG(HAVE_SED,sed,yes,no)
if test "$HAVE_GNUSED" = yes; then
SED=gnused
else
if test "$HAVE_GSED" = yes; then
SED=gsed
else
SED=sed
fi
fi
AC_SUBST(SED)
AC_CONFIG_FILES([Makefile]) AC_CONFIG_FILES([Makefile])
AC_CONFIG_FILES([Makefile.global]) AC_CONFIG_FILES([Makefile.global])
AC_OUTPUT AC_OUTPUT

View File

@@ -73,16 +73,7 @@ while(<$fh>) {
if ($param eq 'data_directory') { if ($param eq 'data_directory') {
$data_directory_found = 1; $data_directory_found = 1;
} }
push @outp, $line;
# Don't quote numbers
if ($value =~ /^\d+$/) {
push @outp, sprintf(q|%s=%s|, $param, $value);
}
# Quote everything else
else {
$value =~ s/'/''/g;
push @outp, sprintf(q|%s='%s'|, $param, $value);
}
} }
} }
@@ -92,6 +83,6 @@ print join("\n", @outp);
print "\n"; print "\n";
if ($data_directory_found == 0) { if ($data_directory_found == 0) {
print "data_directory=''\n"; print "data_directory=\n";
} }

View File

@@ -2,11 +2,11 @@
* controldata.c - functions for reading the pg_control file * controldata.c - functions for reading the pg_control file
* *
* The functions provided here enable repmgr to read a pg_control file * The functions provided here enable repmgr to read a pg_control file
* in a version-independent way, even if the PostgreSQL instance is not * in a version-indepent way, even if the PostgreSQL instance is not
* running. For that reason we can't use on the pg_control_*() functions * running. For that reason we can't use on the pg_control_*() functions
* provided in PostgreSQL 9.6 and later. * provided in PostgreSQL 9.6 and later.
* *
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
@@ -90,9 +90,7 @@ get_system_identifier(const char *data_directory)
uint64 system_identifier = UNKNOWN_SYSTEM_IDENTIFIER; uint64 system_identifier = UNKNOWN_SYSTEM_IDENTIFIER;
control_file_info = get_controlfile(data_directory); control_file_info = get_controlfile(data_directory);
system_identifier = control_file_info->system_identifier;
if (control_file_info->control_file_processed == true)
system_identifier = control_file_info->system_identifier;
pfree(control_file_info); pfree(control_file_info);
@@ -100,21 +98,19 @@ get_system_identifier(const char *data_directory)
} }
bool DBState
get_db_state(const char *data_directory, DBState *state) get_db_state(const char *data_directory)
{ {
ControlFileInfo *control_file_info = NULL; ControlFileInfo *control_file_info = NULL;
bool control_file_processed; DBState state;
control_file_info = get_controlfile(data_directory); control_file_info = get_controlfile(data_directory);
control_file_processed = control_file_info->control_file_processed;
if (control_file_processed == true) state = control_file_info->state;
*state = control_file_info->state;
pfree(control_file_info); pfree(control_file_info);
return control_file_processed; return state;
} }
@@ -126,8 +122,7 @@ get_latest_checkpoint_location(const char *data_directory)
control_file_info = get_controlfile(data_directory); control_file_info = get_controlfile(data_directory);
if (control_file_info->control_file_processed == true) checkPoint = control_file_info->checkPoint;
checkPoint = control_file_info->checkPoint;
pfree(control_file_info); pfree(control_file_info);
@@ -139,12 +134,11 @@ int
get_data_checksum_version(const char *data_directory) get_data_checksum_version(const char *data_directory)
{ {
ControlFileInfo *control_file_info = NULL; ControlFileInfo *control_file_info = NULL;
int data_checksum_version = UNKNOWN_DATA_CHECKSUM_VERSION; int data_checksum_version = -1;
control_file_info = get_controlfile(data_directory); control_file_info = get_controlfile(data_directory);
if (control_file_info->control_file_processed == true) data_checksum_version = (int) control_file_info->data_checksum_version;
data_checksum_version = (int) control_file_info->data_checksum_version;
pfree(control_file_info); pfree(control_file_info);
@@ -283,19 +277,8 @@ get_controlfile(const char *DataDir)
return control_file_info; return control_file_info;
} }
if (version_num >= 120000)
{ if (version_num >= 90500)
#if PG_ACTUAL_VERSION_NUM >= 120000
expected_size = sizeof(ControlFileData12);
ControlFileDataPtr = palloc0(expected_size);
#endif
}
else if (version_num >= 110000)
{
expected_size = sizeof(ControlFileData11);
ControlFileDataPtr = palloc0(expected_size);
}
else if (version_num >= 90500)
{ {
expected_size = sizeof(ControlFileData95); expected_size = sizeof(ControlFileData95);
ControlFileDataPtr = palloc0(expected_size); ControlFileDataPtr = palloc0(expected_size);
@@ -305,6 +288,12 @@ get_controlfile(const char *DataDir)
expected_size = sizeof(ControlFileData94); expected_size = sizeof(ControlFileData94);
ControlFileDataPtr = palloc0(expected_size); ControlFileDataPtr = palloc0(expected_size);
} }
else if (version_num >= 90300)
{
expected_size = sizeof(ControlFileData93);
ControlFileDataPtr = palloc0(expected_size);
}
if (read(fd, ControlFileDataPtr, expected_size) != expected_size) if (read(fd, ControlFileDataPtr, expected_size) != expected_size)
{ {
@@ -323,7 +312,6 @@ get_controlfile(const char *DataDir)
if (version_num >= 120000) if (version_num >= 120000)
{ {
#if PG_ACTUAL_VERSION_NUM >= 120000
ControlFileData12 *ptr = (struct ControlFileData12 *)ControlFileDataPtr; ControlFileData12 *ptr = (struct ControlFileData12 *)ControlFileDataPtr;
control_file_info->system_identifier = ptr->system_identifier; control_file_info->system_identifier = ptr->system_identifier;
control_file_info->state = ptr->state; control_file_info->state = ptr->state;
@@ -332,10 +320,6 @@ get_controlfile(const char *DataDir)
control_file_info->timeline = ptr->checkPointCopy.ThisTimeLineID; control_file_info->timeline = ptr->checkPointCopy.ThisTimeLineID;
control_file_info->minRecoveryPointTLI = ptr->minRecoveryPointTLI; control_file_info->minRecoveryPointTLI = ptr->minRecoveryPointTLI;
control_file_info->minRecoveryPoint = ptr->minRecoveryPoint; control_file_info->minRecoveryPoint = ptr->minRecoveryPoint;
#else
fprintf(stderr, "ERROR: please use a repmgr version built for PostgreSQL 12 or later\n");
exit(ERR_BAD_CONFIG);
#endif
} }
else if (version_num >= 110000) else if (version_num >= 110000)
{ {
@@ -370,6 +354,17 @@ get_controlfile(const char *DataDir)
control_file_info->minRecoveryPointTLI = ptr->minRecoveryPointTLI; control_file_info->minRecoveryPointTLI = ptr->minRecoveryPointTLI;
control_file_info->minRecoveryPoint = ptr->minRecoveryPoint; control_file_info->minRecoveryPoint = ptr->minRecoveryPoint;
} }
else if (version_num >= 90300)
{
ControlFileData93 *ptr = (struct ControlFileData93 *)ControlFileDataPtr;
control_file_info->system_identifier = ptr->system_identifier;
control_file_info->state = ptr->state;
control_file_info->checkPoint = ptr->checkPoint;
control_file_info->data_checksum_version = ptr->data_checksum_version;
control_file_info->timeline = ptr->checkPointCopy.ThisTimeLineID;
control_file_info->minRecoveryPointTLI = ptr->minRecoveryPointTLI;
control_file_info->minRecoveryPoint = ptr->minRecoveryPoint;
}
pfree(ControlFileDataPtr); pfree(ControlFileDataPtr);

View File

@@ -1,6 +1,6 @@
/* /*
* controldata.h * controldata.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
@@ -12,7 +12,6 @@
#include "postgres_fe.h" #include "postgres_fe.h"
#include "catalog/pg_control.h" #include "catalog/pg_control.h"
#define MAX_VERSION_STRING 24 #define MAX_VERSION_STRING 24
/* /*
* A simplified representation of pg_control containing only those fields * A simplified representation of pg_control containing only those fields
@@ -31,7 +30,9 @@ typedef struct
} ControlFileInfo; } ControlFileInfo;
typedef struct CheckPoint94
/* Same for 9.3, 9.4 */
typedef struct CheckPoint93
{ {
XLogRecPtr redo; /* next RecPtr available when we began to XLogRecPtr redo; /* next RecPtr available when we began to
* create CheckPoint (i.e. REDO start point) */ * create CheckPoint (i.e. REDO start point) */
@@ -51,10 +52,10 @@ typedef struct CheckPoint94
pg_time_t time; /* time stamp of checkpoint */ pg_time_t time; /* time stamp of checkpoint */
TransactionId oldestActiveXid; TransactionId oldestActiveXid;
} CheckPoint94; } CheckPoint93;
/* Same for 9.5, 9.6, 10, 11 */ /* Same for 9.5, 9.6, 10, HEAD */
typedef struct CheckPoint95 typedef struct CheckPoint95
{ {
XLogRecPtr redo; /* next RecPtr available when we began to XLogRecPtr redo; /* next RecPtr available when we began to
@@ -82,50 +83,65 @@ typedef struct CheckPoint95
} CheckPoint95; } CheckPoint95;
#if PG_ACTUAL_VERSION_NUM >= 120000 typedef struct ControlFileData93
/*
* Following fields removed in PostgreSQL 12;
*
* uint32 nextXidEpoch;
* TransactionId nextXid;
*
* and replaced by:
*
* FullTransactionId nextFullXid;
*/
typedef struct CheckPoint12
{ {
XLogRecPtr redo; /* next RecPtr available when we began to uint64 system_identifier;
* create CheckPoint (i.e. REDO start point) */
TimeLineID ThisTimeLineID; /* current TLI */
TimeLineID PrevTimeLineID; /* previous TLI, if this record begins a new
* timeline (equals ThisTimeLineID otherwise) */
bool fullPageWrites; /* current full_page_writes */
FullTransactionId nextFullXid; /* next free full transaction ID */
Oid nextOid; /* next free OID */
MultiXactId nextMulti; /* next free MultiXactId */
MultiXactOffset nextMultiOffset; /* next free MultiXact offset */
TransactionId oldestXid; /* cluster-wide minimum datfrozenxid */
Oid oldestXidDB; /* database with minimum datfrozenxid */
MultiXactId oldestMulti; /* cluster-wide minimum datminmxid */
Oid oldestMultiDB; /* database with minimum datminmxid */
pg_time_t time; /* time stamp of checkpoint */
TransactionId oldestCommitTsXid; /* oldest Xid with valid commit
* timestamp */
TransactionId newestCommitTsXid; /* newest Xid with valid commit
* timestamp */
/* uint32 pg_control_version; /* PG_CONTROL_VERSION */
* Oldest XID still running. This is only needed to initialize hot standby uint32 catalog_version_no; /* see catversion.h */
* mode from an online checkpoint, so we only bother calculating this for
* online checkpoints and only when wal_level is replica. Otherwise it's
* set to InvalidTransactionId.
*/
TransactionId oldestActiveXid;
} CheckPoint12;
#endif
DBState state; /* see enum above */
pg_time_t time; /* time stamp of last pg_control update */
XLogRecPtr checkPoint; /* last check point record ptr */
XLogRecPtr prevCheckPoint; /* previous check point record ptr */
CheckPoint93 checkPointCopy; /* copy of last check point record */
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
XLogRecPtr minRecoveryPoint;
TimeLineID minRecoveryPointTLI;
XLogRecPtr backupStartPoint;
XLogRecPtr backupEndPoint;
bool backupEndRequired;
int wal_level;
int MaxConnections;
int max_prepared_xacts;
int max_locks_per_xact;
uint32 maxAlign; /* alignment requirement for tuples */
double floatFormat; /* constant 1234567.0 */
uint32 blcksz; /* data block size for this DB */
uint32 relseg_size; /* blocks per segment of large relation */
uint32 xlog_blcksz; /* block size within WAL files */
uint32 xlog_seg_size; /* size of each WAL segment */
uint32 nameDataLen; /* catalog name field width */
uint32 indexMaxKeys; /* max number of columns in an index */
uint32 toast_max_chunk_size; /* chunk size in TOAST tables */
/* flag indicating internal format of timestamp, interval, time */
bool enableIntTimes; /* int64 storage enabled? */
/* flags indicating pass-by-value status of various types */
bool float4ByVal; /* float4 pass-by-value? */
bool float8ByVal; /* float8, int8, etc pass-by-value? */
/* Are data pages protected by checksums? Zero if no checksum version */
uint32 data_checksum_version;
} ControlFileData93;
/*
* Following field added since 9.3:
*
* int max_worker_processes;
*/
typedef struct ControlFileData94 typedef struct ControlFileData94
{ {
@@ -139,7 +155,7 @@ typedef struct ControlFileData94
XLogRecPtr checkPoint; /* last check point record ptr */ XLogRecPtr checkPoint; /* last check point record ptr */
XLogRecPtr prevCheckPoint; /* previous check point record ptr */ XLogRecPtr prevCheckPoint; /* previous check point record ptr */
CheckPoint94 checkPointCopy; /* copy of last check point record */ CheckPoint93 checkPointCopy; /* copy of last check point record */
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */ XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
@@ -317,11 +333,19 @@ typedef struct ControlFileData11
} ControlFileData11; } ControlFileData11;
#if PG_ACTUAL_VERSION_NUM >= 120000
/* /*
* Following field added in Pg12: * Following field added in Pg12:
* *
* int max_wal_senders; * int max_wal_senders;
*
* Following fields removed:
*
* uint32 nextXidEpoch;
* TransactionId nextXid;
*
* and replaced by:
*
* FullTransactionId nextFullXid;
*/ */
typedef struct ControlFileData12 typedef struct ControlFileData12
@@ -335,7 +359,7 @@ typedef struct ControlFileData12
pg_time_t time; /* time stamp of last pg_control update */ pg_time_t time; /* time stamp of last pg_control update */
XLogRecPtr checkPoint; /* last check point record ptr */ XLogRecPtr checkPoint; /* last check point record ptr */
CheckPoint12 checkPointCopy; /* copy of last check point record */ CheckPoint checkPointCopy; /* copy of last check point record */
XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */ XLogRecPtr unloggedLSN; /* current fake LSN value, for unlogged rels */
@@ -374,10 +398,9 @@ typedef struct ControlFileData12
uint32 data_checksum_version; uint32 data_checksum_version;
} ControlFileData12; } ControlFileData12;
#endif
extern int get_pg_version(const char *data_directory, char *version_string); extern int get_pg_version(const char *data_directory, char *version_string);
extern bool get_db_state(const char *data_directory, DBState *state); extern DBState get_db_state(const char *data_directory);
extern const char *describe_db_state(DBState state); extern const char *describe_db_state(DBState state);
extern int get_data_checksum_version(const char *data_directory); extern int get_data_checksum_version(const char *data_directory);
extern uint64 get_system_identifier(const char *data_directory); extern uint64 get_system_identifier(const char *data_directory);

1695
dbutils.c

File diff suppressed because it is too large Load Diff

121
dbutils.h
View File

@@ -1,7 +1,7 @@
/* /*
* dbutils.h * dbutils.h
* *
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@@ -60,6 +60,11 @@
"NULL AS attached " "NULL AS attached "
#define BDR2_NODES_COLUMNS "node_sysid, node_timeline, node_dboid, node_name, node_local_dsn, ''"
#define BDR3_NODES_COLUMNS "ns.node_id, 0, 0, ns.node_name, ns.interface_connstr, ns.peer_state_name"
#define ERRBUFF_SIZE 512 #define ERRBUFF_SIZE 512
typedef enum typedef enum
@@ -67,7 +72,8 @@ typedef enum
UNKNOWN = 0, UNKNOWN = 0,
PRIMARY, PRIMARY,
STANDBY, STANDBY,
WITNESS WITNESS,
BDR
} t_server_type; } t_server_type;
typedef enum typedef enum
@@ -119,21 +125,14 @@ typedef enum
typedef enum typedef enum
{ {
/* unable to query "pg_stat_replication" or other error */
NODE_ATTACHED_UNKNOWN = -1, NODE_ATTACHED_UNKNOWN = -1,
/* node has record in "pg_stat_replication" and state is not "streaming" */ NODE_DETACHED,
NODE_ATTACHED, NODE_ATTACHED
/* node has record in "pg_stat_replication" but state is not "streaming" */
NODE_NOT_ATTACHED,
/* node has no record in "pg_stat_replication" */
NODE_DETACHED
} NodeAttached; } NodeAttached;
typedef enum typedef enum
{ {
SLOT_UNKNOWN = -1, SLOT_UNKNOWN = -1,
SLOT_NOT_FOUND,
SLOT_NOT_PHYSICAL,
SLOT_INACTIVE, SLOT_INACTIVE,
SLOT_ACTIVE SLOT_ACTIVE
} ReplSlotStatus; } ReplSlotStatus;
@@ -171,7 +170,6 @@ typedef struct
char current_timestamp[MAXLEN]; char current_timestamp[MAXLEN];
bool in_recovery; bool in_recovery;
TimeLineID timeline_id; TimeLineID timeline_id;
char timeline_id_str[MAXLEN];
XLogRecPtr last_wal_receive_lsn; XLogRecPtr last_wal_receive_lsn;
XLogRecPtr last_wal_replay_lsn; XLogRecPtr last_wal_replay_lsn;
char last_xact_replay_timestamp[MAXLEN]; char last_xact_replay_timestamp[MAXLEN];
@@ -326,6 +324,45 @@ typedef struct s_connection_user
#define T_CONNECTION_USER_INITIALIZER { "", false } #define T_CONNECTION_USER_INITIALIZER { "", false }
/* represents an entry in bdr.bdr_nodes */
typedef struct s_bdr_node_info
{
char node_sysid[MAXLEN];
uint32 node_timeline;
uint32 node_dboid;
char node_name[MAXLEN];
char node_local_dsn[MAXLEN];
char peer_state_name[MAXLEN];
} t_bdr_node_info;
#define T_BDR_NODE_INFO_INITIALIZER { \
"", InvalidOid, InvalidOid, \
"", "", "" \
}
/* structs to store a list of BDR node records */
typedef struct BdrNodeInfoListCell
{
struct BdrNodeInfoListCell *next;
t_bdr_node_info *node_info;
} BdrNodeInfoListCell;
typedef struct BdrNodeInfoList
{
BdrNodeInfoListCell *head;
BdrNodeInfoListCell *tail;
int node_count;
} BdrNodeInfoList;
#define T_BDR_NODE_INFO_LIST_INITIALIZER { \
NULL, \
NULL, \
0 \
}
typedef struct typedef struct
{ {
char filepath[MAXPGPATH]; char filepath[MAXPGPATH];
@@ -335,7 +372,6 @@ typedef struct
#define T_CONFIGFILE_INFO_INITIALIZER { "", "", false } #define T_CONFIGFILE_INFO_INITIALIZER { "", "", false }
typedef struct typedef struct
{ {
int size; int size;
@@ -345,7 +381,6 @@ typedef struct
#define T_CONFIGFILE_LIST_INITIALIZER { 0, 0, NULL } #define T_CONFIGFILE_LIST_INITIALIZER { 0, 0, NULL }
typedef struct typedef struct
{ {
uint64 system_identifier; uint64 system_identifier;
@@ -385,6 +420,10 @@ typedef struct RepmgrdInfo {
/* utility functions */ /* utility functions */
XLogRecPtr parse_lsn(const char *str); XLogRecPtr parse_lsn(const char *str);
extern void
wrap_ddl_query(PQExpBufferData *query_buf, int replication_type, const char *fmt,...)
__attribute__((format(PG_PRINTF_ATTRIBUTE, 3, 4)));
bool atobool(const char *value); bool atobool(const char *value);
/* connection functions */ /* connection functions */
@@ -393,19 +432,12 @@ PGconn *establish_db_connection(const char *conninfo,
PGconn *establish_db_connection_quiet(const char *conninfo); PGconn *establish_db_connection_quiet(const char *conninfo);
PGconn *establish_db_connection_by_params(t_conninfo_param_list *param_list, PGconn *establish_db_connection_by_params(t_conninfo_param_list *param_list,
const bool exit_on_error); const bool exit_on_error);
PGconn *establish_db_connection_with_replacement_param(const char *conninfo,
const char *param,
const char *value,
const bool exit_on_error);
PGconn *establish_replication_connection_from_conn(PGconn *conn, const char *repluser);
PGconn *establish_replication_connection_from_conninfo(const char *conninfo, const char *repluser);
PGconn *establish_primary_db_connection(PGconn *conn, PGconn *establish_primary_db_connection(PGconn *conn,
const bool exit_on_error); const bool exit_on_error);
PGconn *get_primary_connection(PGconn *standby_conn, int *primary_id, char *primary_conninfo_out); PGconn *get_primary_connection(PGconn *standby_conn, int *primary_id, char *primary_conninfo_out);
PGconn *get_primary_connection_quiet(PGconn *standby_conn, int *primary_id, char *primary_conninfo_out); PGconn *get_primary_connection_quiet(PGconn *standby_conn, int *primary_id, char *primary_conninfo_out);
PGconn *duplicate_connection(PGconn *conn, const char *user, bool replication);
bool is_superuser_connection(PGconn *conn, t_connection_user *userinfo);
void close_connection(PGconn **conn); void close_connection(PGconn **conn);
/* conninfo manipulation functions */ /* conninfo manipulation functions */
@@ -418,7 +450,6 @@ void conn_to_param_list(PGconn *conn, t_conninfo_param_list *param_list);
void param_set(t_conninfo_param_list *param_list, const char *param, const char *value); void param_set(t_conninfo_param_list *param_list, const char *param, const char *value);
void param_set_ine(t_conninfo_param_list *param_list, const char *param, const char *value); void param_set_ine(t_conninfo_param_list *param_list, const char *param, const char *value);
char *param_get(t_conninfo_param_list *param_list, const char *param); char *param_get(t_conninfo_param_list *param_list, const char *param);
bool validate_conninfo_string(const char *conninfo_str, char **errmsg);
bool parse_conninfo_string(const char *conninfo_str, t_conninfo_param_list *param_list, char **errmsg, bool ignore_local_params); bool parse_conninfo_string(const char *conninfo_str, t_conninfo_param_list *param_list, char **errmsg, bool ignore_local_params);
char *param_list_to_string(t_conninfo_param_list *param_list); char *param_list_to_string(t_conninfo_param_list *param_list);
char *normalize_conninfo_string(const char *conninfo_str); char *normalize_conninfo_string(const char *conninfo_str);
@@ -435,7 +466,6 @@ bool set_config(PGconn *conn, const char *config_param, const char *config_valu
bool set_config_bool(PGconn *conn, const char *config_param, bool state); bool set_config_bool(PGconn *conn, const char *config_param, bool state);
int guc_set(PGconn *conn, const char *parameter, const char *op, const char *value); int guc_set(PGconn *conn, const char *parameter, const char *op, const char *value);
bool get_pg_setting(PGconn *conn, const char *setting, char *output); bool get_pg_setting(PGconn *conn, const char *setting, char *output);
bool get_pg_setting_bool(PGconn *conn, const char *setting, bool *output);
bool get_pg_setting_int(PGconn *conn, const char *setting, int *output); bool get_pg_setting_int(PGconn *conn, const char *setting, int *output);
bool alter_system_int(PGconn *conn, const char *name, int value); bool alter_system_int(PGconn *conn, const char *name, int value);
bool pg_reload_conf(PGconn *conn); bool pg_reload_conf(PGconn *conn);
@@ -451,12 +481,6 @@ bool identify_system(PGconn *repl_conn, t_system_identification *identification
uint64 system_identifier(PGconn *conn); uint64 system_identifier(PGconn *conn);
TimeLineHistoryEntry *get_timeline_history(PGconn *repl_conn, TimeLineID tli); TimeLineHistoryEntry *get_timeline_history(PGconn *repl_conn, TimeLineID tli);
/* user/role information functions */
bool can_execute_pg_promote(PGconn *conn);
bool connection_has_pg_monitor_role(PGconn *conn, const char *subrole);
bool is_replication_role(PGconn *conn, char *rolname);
bool is_superuser_connection(PGconn *conn, t_connection_user *userinfo);
/* repmgrd shared memory functions */ /* repmgrd shared memory functions */
bool repmgrd_set_local_node_id(PGconn *conn, int local_node_id); bool repmgrd_set_local_node_id(PGconn *conn, int local_node_id);
int repmgrd_get_local_node_id(PGconn *conn); int repmgrd_get_local_node_id(PGconn *conn);
@@ -496,7 +520,6 @@ bool get_local_node_record(PGconn *conn, int node_id, t_node_info *node_info);
bool get_primary_node_record(PGconn *conn, t_node_info *node_info); bool get_primary_node_record(PGconn *conn, t_node_info *node_info);
bool get_all_node_records(PGconn *conn, NodeInfoList *node_list); bool get_all_node_records(PGconn *conn, NodeInfoList *node_list);
bool get_all_nodes_count(PGconn *conn, int *count);
void get_downstream_node_records(PGconn *conn, int node_id, NodeInfoList *nodes); void get_downstream_node_records(PGconn *conn, int node_id, NodeInfoList *nodes);
void get_active_sibling_node_records(PGconn *conn, int node_id, int upstream_node_id, NodeInfoList *node_list); void get_active_sibling_node_records(PGconn *conn, int node_id, int upstream_node_id, NodeInfoList *node_list);
bool get_child_nodes(PGconn *conn, int node_id, NodeInfoList *node_list); bool get_child_nodes(PGconn *conn, int node_id, NodeInfoList *node_list);
@@ -535,14 +558,10 @@ PGresult *get_event_records(PGconn *conn, int node_id, const char *node_name,
/* replication slot functions */ /* replication slot functions */
void create_slot_name(char *slot_name, int node_id); void create_slot_name(char *slot_name, int node_id);
bool create_replication_slot(PGconn *conn, char *slot_name, PQExpBufferData *error_msg);
bool create_replication_slot_sql(PGconn *conn, char *slot_name, PQExpBufferData *error_msg); bool drop_replication_slot(PGconn *conn, char *slot_name);
bool create_replication_slot_replprot(PGconn *conn, PGconn *repl_conn, char *slot_name, PQExpBufferData *error_msg);
bool drop_replication_slot_sql(PGconn *conn, char *slot_name);
bool drop_replication_slot_replprot(PGconn *repl_conn, char *slot_name);
RecordStatus get_slot_record(PGconn *conn, char *slot_name, t_replication_slot *record); RecordStatus get_slot_record(PGconn *conn, char *slot_name, t_replication_slot *record);
int get_free_replication_slot_count(PGconn *conn, int *max_replication_slots); int get_free_replication_slot_count(PGconn *conn);
int get_inactive_replication_slots(PGconn *conn, KeyValueList *list); int get_inactive_replication_slots(PGconn *conn, KeyValueList *list);
/* tablespace functions */ /* tablespace functions */
@@ -594,16 +613,34 @@ XLogRecPtr get_last_wal_receive_location(PGconn *conn);
void init_replication_info(ReplInfo *replication_info); void init_replication_info(ReplInfo *replication_info);
bool get_replication_info(PGconn *conn, t_server_type node_type, ReplInfo *replication_info); bool get_replication_info(PGconn *conn, t_server_type node_type, ReplInfo *replication_info);
int get_replication_lag_seconds(PGconn *conn); int get_replication_lag_seconds(PGconn *conn);
TimeLineID get_node_timeline(PGconn *conn, char *timeline_id_str); TimeLineID get_node_timeline(PGconn *conn);
void get_node_replication_stats(PGconn *conn, t_node_info *node_info); void get_node_replication_stats(PGconn *conn, t_node_info *node_info);
NodeAttached is_downstream_node_attached(PGconn *conn, char *node_name, char **node_state); NodeAttached is_downstream_node_attached(PGconn *conn, char *node_name);
void set_upstream_last_seen(PGconn *conn, int upstream_node_id); void set_upstream_last_seen(PGconn *conn, int upstream_node_id);
int get_upstream_last_seen(PGconn *conn, t_server_type node_type); int get_upstream_last_seen(PGconn *conn, t_server_type node_type);
bool is_wal_replay_paused(PGconn *conn, bool check_pending_wal); bool is_wal_replay_paused(PGconn *conn, bool check_pending_wal);
/* repmgrd status functions */ /* BDR functions */
CheckStatus get_repmgrd_status(PGconn *conn); int get_bdr_version_num(void);
void get_all_bdr_node_records(PGconn *conn, BdrNodeInfoList *node_list);
RecordStatus get_bdr_node_record_by_name(PGconn *conn, const char *node_name, t_bdr_node_info *node_info);
bool is_bdr_db(PGconn *conn, PQExpBufferData *output);
bool is_bdr_db_quiet(PGconn *conn);
bool is_active_bdr_node(PGconn *conn, const char *node_name);
bool is_bdr_repmgr(PGconn *conn);
char *get_default_bdr_replication_set(PGconn *conn);
bool is_table_in_bdr_replication_set(PGconn *conn, const char *tablename, const char *set);
bool add_table_to_bdr_replication_set(PGconn *conn, const char *tablename, const char *set);
void add_extension_tables_to_bdr_replication_set(PGconn *conn);
bool bdr_node_name_matches(PGconn *conn, const char *node_name, PQExpBufferData *bdr_local_node_name);
ReplSlotStatus get_bdr_node_replication_slot_status(PGconn *conn, const char *node_name);
void get_bdr_other_node_name(PGconn *conn, int node_id, char *name_buf);
bool am_bdr_failover_handler(PGconn *conn, int node_id);
void unset_bdr_failover_handler(PGconn *conn);
bool bdr_node_has_repmgr_set(PGconn *conn, const char *node_name);
bool bdr_node_set_repmgr_set(PGconn *conn, const char *node_name);
/* miscellaneous debugging functions */ /* miscellaneous debugging functions */
const char *print_node_status(NodeStatus node_status); const char *print_node_status(NodeStatus node_status);

View File

@@ -3,7 +3,7 @@
* dirmod.c * dirmod.c
* directory handling functions * directory handling functions
* *
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@@ -109,56 +109,9 @@ create_dir(const char *path)
bool bool
set_dir_permissions(const char *path, int server_version_num) set_dir_permissions(const char *path)
{ {
struct stat stat_buf; return (chmod(path, 0700) != 0) ? false : true;
bool no_group_access =
(server_version_num != UNKNOWN_SERVER_VERSION_NUM) &&
(server_version_num < 110000);
/*
* At this point the path should exist, so this check is very
* much just-in-case.
*/
if (stat(path, &stat_buf) != 0)
{
if (errno == ENOENT)
{
log_warning(_("directory \"%s\" does not exist"), path);
}
else
{
log_warning(_("could not read permissions of directory \"%s\""),
path);
log_detail("%s", strerror(errno));
}
return false;
}
/*
* If mode is not 0700 or 0750, attempt to change.
*/
if ((no_group_access == true && (stat_buf.st_mode & (S_IRWXG | S_IRWXO)))
|| (no_group_access == false && (stat_buf.st_mode & (S_IWGRP | S_IRWXO))))
{
/*
* Currently we default to 0700.
* There is no facility to override this directly,
* but the user can manually create the directory with
* the desired permissions.
*/
if (chmod(path, 0700) != 0) {
log_error(_("unable to change permissions of directory \"%s\""), path);
log_detail("%s", strerror(errno));
return false;
}
return true;
}
/* Leave as-is */
return true;
} }
@@ -205,7 +158,7 @@ mkdir_p(char *path, mode_t omode)
/* /*
* POSIX 1003.2: For each dir operand that does not name an * POSIX 1003.2: For each dir operand that does not name an
* existing directory, effects equivalent to those caused by the * existing directory, effects equivalent to those caused by the
* following command shall occur: * following command shall occcur:
* *
* mkdir -p -m $(umask -S),u+wx $(dirname dir) && mkdir [-m mode] * mkdir -p -m $(umask -S),u+wx $(dirname dir) && mkdir [-m mode]
* dir * dir
@@ -289,7 +242,7 @@ is_pg_running(const char *path)
{ {
/* /*
* No PID file - PostgreSQL shouldn't be running. From 9.3 (the * No PID file - PostgreSQL shouldn't be running. From 9.3 (the
* earliest version we care about) removal of the PID file will * earliesty version we care about) removal of the PID file will
* cause the postmaster to shut down, so it's highly unlikely * cause the postmaster to shut down, so it's highly unlikely
* that PostgreSQL will still be running. * that PostgreSQL will still be running.
*/ */
@@ -350,7 +303,7 @@ create_pg_dir(const char *path, bool force)
switch (check_dir(path)) switch (check_dir(path))
{ {
case DIR_NOENT: case DIR_NOENT:
/* Directory does not exist, attempt to create it. */ /* directory does not exist, attempt to create it */
log_info(_("creating directory \"%s\"..."), path); log_info(_("creating directory \"%s\"..."), path);
if (!create_dir(path)) if (!create_dir(path))
@@ -361,23 +314,14 @@ create_pg_dir(const char *path, bool force)
} }
break; break;
case DIR_EMPTY: case DIR_EMPTY:
/* /* exists but empty, fix permissions and use it */
* Directory exists but empty, fix permissions and use it.
*
* Note that at this point the caller might not know the server
* version number, so in this case "set_dir_permissions()" will
* accept 0750 as a valid setting. As this is invalid in Pg10 and
* earlier, the caller should call "set_dir_permissions()" again
* when it has the number.
*
* We need to do the permissions check here in any case to catch
* fatal permissions early.
*/
log_info(_("checking and correcting permissions on existing directory \"%s\""), log_info(_("checking and correcting permissions on existing directory \"%s\""),
path); path);
if (!set_dir_permissions(path, UNKNOWN_SERVER_VERSION_NUM)) if (!set_dir_permissions(path))
{ {
log_error(_("unable to change permissions of directory \"%s\""), path);
log_detail("%s", strerror(errno));
return false; return false;
} }
break; break;

View File

@@ -1,6 +1,6 @@
/* /*
* dirutil.h * dirutil.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@@ -35,7 +35,7 @@ typedef enum
} PgDirState; } PgDirState;
extern int mkdir_p(char *path, mode_t omode); extern int mkdir_p(char *path, mode_t omode);
extern bool set_dir_permissions(const char *path, int server_version_num); extern bool set_dir_permissions(const char *path);
extern DataDirState check_dir(const char *path); extern DataDirState check_dir(const char *path);
extern bool create_dir(const char *path); extern bool create_dir(const char *path);

View File

@@ -31,7 +31,6 @@ ALLXML := $(wildcard $(srcdir)/*.xml) $(GENERATED_XML)
version.xml: $(repmgr_top_builddir)/repmgr_version.h version.xml: $(repmgr_top_builddir)/repmgr_version.h
{ \ { \
echo "<!ENTITY repmgrversion \"$(REPMGR_VERSION)\">"; \ echo "<!ENTITY repmgrversion \"$(REPMGR_VERSION)\">"; \
echo "<!ENTITY releasedate \"$(REPMGR_RELEASE_DATE)\">"; \
} > $@ } > $@
## ##
@@ -95,8 +94,6 @@ clean:
rm -f repmgr.html rm -f repmgr.html
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<title>FAQ (Frequently Asked Questions)</title> <title>FAQ (Frequently Asked Questions)</title>
<indexterm> <indexterm>
<primary>FAQ (Frequently Asked Questions)</primary> <primary>FAQ (Frequently Asked Questions)</primary>
</indexterm> </indexterm>
<sect1 id="faq-general" xreflabel="General"> <sect1 id="faq-general" xreflabel="General">
<title>General</title> <title>General</title>
<sect2 id="faq-xrepmgr-version-diff" xreflabel="Version differences"> <sect2 id="faq-xrepmgr-version-diff" xreflabel="Version differences">
<title>What's the difference between the repmgr versions?</title> <title>What's the difference between the repmgr versions?</title>
<para> <para>
&repmgr; 4 is a complete rewrite of the previous &repmgr; code base &repmgr; 4 is a complete rewrite of the existing &repmgr; code base
and implements &repmgr; as a PostgreSQL extension. It and implements &repmgr; as a PostgreSQL extension. It
supports all PostgreSQL versions from 9.3 (although some &repmgr; supports all PostgreSQL versions from 9.3 (although some &repmgr;
features are not available for PostgreSQL 9.3 and 9.4). features are not available for PostgreSQL 9.3 and 9.4).
</para> </para>
<note> <para>
<para> &repmgr; 3.x builds on the improved replication facilities added
&repmgr; 5 is fundamentally the same code base as &repmgr; 4, but provides in PostgreSQL 9.3, as well as improved automated failover support
support for the revised replication configuration mechanism in PostgreSQL 12. via &repmgrd;, and is not compatible with PostgreSQL 9.2
</para> and earlier. We recommend upgrading to &repmgr; 4, as the &repmgr; 3.x
<para> series is no longer maintained.
Support for PostgreSQL 9.3 is no longer available from &repmgr; 5.2. </para>
</para> <para>
</note> &repmgr; 2.x supports PostgreSQL 9.0 ~ 9.3. While it is compatible
<para> with PostgreSQL 9.3, we recommend using repmgr 4.x. &repmgr; 2.x is
&repmgr; 3.x builds on the improved replication facilities added no longer maintained.
in PostgreSQL 9.3, as well as improved automated failover support </para>
via &repmgrd;, and is not compatible with PostgreSQL 9.2 <para>
and earlier. We recommend upgrading to &repmgr; 4, as the &repmgr; 3.x See also <link linkend="install-compatibility-matrix">&repmgr; compatibility matrix</link>
series is no longer maintained. and <link linkend="faq-upgrade-repmgr">Should I upgrade &repmgr;?</link>.
</para> </para>
<para> </sect2>
&repmgr; 2.x supports PostgreSQL 9.0 ~ 9.3. While it is compatible
with PostgreSQL 9.3, we recommend using repmgr 4.x. &repmgr; 2.x is
no longer maintained.
</para>
<para>
See also <link linkend="install-compatibility-matrix">&repmgr; compatibility matrix</link>
and <link linkend="faq-upgrade-repmgr">Should I upgrade &repmgr;?</link>.
</para>
</sect2>
<sect2 id="faq-replication-slots-advantage" xreflabel="Advantages of replication slots"> <sect2 id="faq-replication-slots-advantage" xreflabel="Advantages of replication slots">
<title>What's the advantage of using replication slots?</title> <title>What's the advantage of using replication slots?</title>
<para> <para>
Replication slots, introduced in PostgreSQL 9.4, ensure that the Replication slots, introduced in PostgreSQL 9.4, ensure that the
primary server will retain WAL files until they have been consumed primary server will retain WAL files until they have been consumed
by all standby servers. This means standby servers should never by all standby servers. This means standby servers should never
fail due to not being able to retrieve required WAL files from the fail due to not being able to retrieve required WAL files from the
primary. primary.
</para> </para>
<para> <para>
However this does mean that if a standby is no longer connected to the However this does mean that if a standby is no longer connected to the
primary, the presence of the replication slot will cause WAL files primary, the presence of the replication slot will cause WAL files
to be retained indefinitely, and eventually lead to disk space to be retained indefinitely, and eventually lead to disk space
exhaustion. exhaustion.
</para> </para>
<tip> <tip>
<para> <para>
Our recommended configuration is to configure 2ndQuadrant's recommended configuration is to configure
<ulink url="https://www.pgbarman.org/">Barman</ulink> as a fallback <ulink url="https://www.pgbarman.org/">Barman</ulink> as a fallback
source of WAL files, rather than maintain replication slots for source of WAL files, rather than maintain replication slots for
each standby. See also: <link linkend="cloning-from-barman-restore-command">Using Barman as a WAL file source</link>. each standby. See also: <link linkend="cloning-from-barman-restore-command">Using Barman as a WAL file source</link>.
</para> </para>
</tip> </tip>
</sect2> </sect2>
<sect2 id="faq-replication-slots-number" xreflabel="Number of replication slots"> <sect2 id="faq-replication-slots-number" xreflabel="Number of replication slots">
<title>How many replication slots should I define in <varname>max_replication_slots</varname>?</title> <title>How many replication slots should I define in <varname>max_replication_slots</varname>?</title>
<para> <para>
Normally at least same number as the number of standbys which will connect Normally at least same number as the number of standbys which will connect
to the node. Note that changes to <varname>max_replication_slots</varname> require a server to the node. Note that changes to <varname>max_replication_slots</varname> require a server
restart to take effect, and as there is no particular penalty for unused restart to take effect, and as there is no particular penalty for unused
replication slots, setting a higher figure will make adding new nodes replication slots, setting a higher figure will make adding new nodes
easier. easier.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-hash-index" xreflabel="Hash indexes"> <sect2 id="faq-hash-index" xreflabel="Hash indexes">
<title>Does &repmgr; support hash indexes?</title> <title>Does &repmgr; support hash indexes?</title>
<para> <para>
Before PostgreSQL 10, hash indexes were not WAL logged and are therefore not suitable Before PostgreSQL 10, hash indexes were not WAL logged and are therefore not suitable
for use in streaming replication in PostgreSQL 9.6 and earlier. See the for use in streaming replication in PostgreSQL 9.6 and earlier. See the
<ulink url="https://www.postgresql.org/docs/9.6/sql-createindex.html#AEN80279">PostgreSQL documentation</ulink> <ulink url="https://www.postgresql.org/docs/9.6/sql-createindex.html#AEN80279">PostgreSQL documentation</ulink>
for details. for details.
</para> </para>
<para> <para>
From PostgreSQL 10, this restriction has been lifted and hash indexes can be used From PostgreSQL 10, this restriction has been lifted and hash indexes can be used
in a streaming replication cluster. in a streaming replication cluster.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-upgrades" xreflabel="Upgrading PostgreSQL with repmgr"> <sect2 id="faq-upgrades" xreflabel="Upgrading PostgreSQL with repmgr">
<title>Can &repmgr; assist with upgrading a PostgreSQL cluster?</title> <title>Can &repmgr; assist with upgrading a PostgreSQL cluster?</title>
<para> <para>
For <emphasis>minor</emphasis> version upgrades, e.g. from 9.6.7 to 9.6.8, a common For <emphasis>minor</emphasis> version upgrades, e.g. from 9.6.7 to 9.6.8, a common
approach is to upgrade a standby to the latest version, perform a approach is to upgrade a standby to the latest version, perform a
<link linkend="performing-switchover">switchover</link> promoting it to a primary, <link linkend="performing-switchover">switchover</link> promoting it to a primary,
then upgrade the former primary. then upgrade the former primary.
</para> </para>
<para> <para>
For <emphasis>major</emphasis> version upgrades (e.g. from PostgreSQL 9.6 to PostgreSQL 10), For <emphasis>major</emphasis> version upgrades (e.g. from PostgreSQL 9.6 to PostgreSQL 10),
the traditional approach is to "reseed" a cluster by upgrading a single the traditional approach is to "reseed" a cluster by upgrading a single
node with <ulink url="https://www.postgresql.org/docs/current/pgupgrade.html">pg_upgrade</ulink> node with <ulink url="https://www.postgresql.org/docs/current/pgupgrade.html">pg_upgrade</ulink>
and recloning standbys from this. and recloning standbys from this.
</para> </para>
<para> <para>
To minimize downtime during major upgrades from PostgreSQL 9.4 and later, To minimize downtime during major upgrades from PostgreSQL 9.4 and later,
<ulink url="https://www.2ndquadrant.com/en/resources/pglogical/">pglogical</ulink> <ulink url="https://www.2ndquadrant.com/en/resources/pglogical/">pglogical</ulink>
can be used to set up a parallel cluster using the newer PostgreSQL version, can be used to set up a parallel cluster using the newer PostgreSQL version,
which can be kept in sync with the existing production cluster until the which can be kept in sync with the existing production cluster until the
new cluster is ready to be put into production. new cluster is ready to be put into production.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-libdir-repmgr-error"> <sect2 id="faq-libdir-repmgr-error">
<title>What does this error mean: <literal>ERROR: could not access file "$libdir/repmgr"</literal>?</title> <title>What does this error mean: <literal>ERROR: could not access file "$libdir/repmgr"</literal>?</title>
<para> <para>
It means the &repmgr; extension code is not installed in the It means the &repmgr; extension code is not installed in the
PostgreSQL application directory. This typically happens when using PostgreSQL PostgreSQL application directory. This typically happens when using PostgreSQL
packages provided by a third-party vendor, which often have different packages provided by a third-party vendor, which often have different
filesystem layouts. filesystem layouts.
</para> </para>
<para> <para>
Either use PostgreSQL packages provided by the community or EnterpriseDB; if this Either use PostgreSQL packages provided by the community or 2ndQuadrant; if this
is not possible, contact your vendor for assistance. is not possible, contact your vendor for assistance.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-old-packages"> <sect2 id="faq-old-packages">
<title>How can I obtain old versions of &repmgr; packages?</title> <title>How can I obtain old versions of &repmgr; packages?</title>
<para> <para>
See appendix <xref linkend="packages-old-versions"/> for details. See appendix <xref linkend="packages-old-versions"/> for details.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-required-for-replication"> <sect2 id="faq-repmgr-required-for-replication">
<title>Is &repmgr; required for streaming replication?</title> <title>Is &repmgr; required for streaming replication?</title>
<para> <para>
No. No.
</para> </para>
<para> <para>
&repmgr; (together with &repmgrd;) assists with &repmgr; (together with &repmgrd;) assists with
<emphasis>managing</emphasis> replication. It does not actually perform replication, which <emphasis>managing</emphasis> replication. It does not actually perform replication, which
is part of the core PostgreSQL functionality. is part of the core PostgreSQL functionality.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-what-if-repmgr-uninstalled"> <sect2 id="faq-what-if-repmgr-uninstalled">
<title>Will replication stop working if &repmgr; is uninstalled?</title> <title>Will replication stop working if &repmgr; is uninstalled?</title>
<para> <para>
No. See preceding question. No. See preceding question.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-version-mix"> <sect2 id="faq-version-mix">
<title>Does it matter if different &repmgr; versions are present in the replication cluster?</title> <title>Does it matter if different &repmgr; versions are present in the replication cluster?</title>
<para> <para>
Yes. If different &quot;major&quot; &repmgr; versions (e.g. 3.3.x and 4.1.x) are present, Yes. If different &quot;major&quot; &repmgr; versions (e.g. 3.3.x and 4.1.x) are present,
&repmgr; (in particular &repmgrd;) &repmgr; (in particular &repmgrd;)
may not run, or run properly, or in the worst case (if different &repmgrd; may not run, or run properly, or in the worst case (if different &repmgrd;
versions are running and there are differences in the failover implementation) break versions are running and there are differences in the failover implementation) break
your replication cluster. your replication cluster.
</para> </para>
<para> <para>
If different &quot;minor&quot; &repmgr; versions (e.g. 4.1.1 and 4.1.6) are installed, If different &quot;minor&quot; &repmgr; versions (e.g. 4.1.1 and 4.1.6) are installed,
&repmgr; will function, but we strongly recommend always running the same version &repmgr; will function, but we strongly recommend always running the same version
to ensure there are no unexpected surprises, e.g. a newer version behaving slightly to ensure there are no unexpected suprises, e.g. a newer version behaving slightly
differently to the older version. differently to the older version.
</para> </para>
<para> <para>
See also <link linkend="faq-upgrade-repmgr">Should I upgrade &repmgr;?</link>. See also <link linkend="faq-upgrade-repmgr">Should I upgrade &repmgr;?</link>.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-upgrade-repmgr"> <sect2 id="faq-upgrade-repmgr">
<title>Should I upgrade &repmgr;?</title> <title>Should I upgrade &repmgr;?</title>
<para> <para>
Yes. Yes.
</para> </para>
<para> <para>
We don't release new versions for fun, you know. Upgrading may require a little effort, We don't release new versions for fun, you know. Upgrading may require a little effort,
but running an older &repmgr; version with bugs which have since been fixed may end up but running an older &repmgr; version with bugs which have since been fixed may end up
costing you more effort. The same applies to PostgreSQL itself. costing you more effort. The same applies to PostgreSQL itself.
</para> </para>
</sect2>
<sect2 id="faq-repmgr-conf-data-directory"> </sect2>
<title>Why do I need to specify the data directory location in repmgr.conf?</title>
<para>
In some circumstances &repmgr; may need to access a PostgreSQL data
directory while the PostgreSQL server is not running, e.g. to confirm
it shut down cleanly during a <link linkend="performing-switchover">switchover</link>.
</para>
<para>
Additionally, this provides support when using &repmgr; on PostgreSQL 9.6 and
earlier, where the <literal>repmgr</literal> user is not a superuser; in that
case the <literal>repmgr</literal> user will not be able to access the
<literal>data_directory</literal> configuration setting, access to which is restricted
to superusers.
</para>
<para>
In PostgreSQL 10 and later, non-superusers can be added to the
<ulink url="https://www.postgresql.org/docs/current/default-roles.html">default role</ulink>
<option>pg_read_all_settings</option> (or the meta-role <option>pg_monitor</option>)
which will enable them to read this setting.
</para>
</sect2>
<sect2 id="faq-third-party-packages" xreflabel="Compatibility with third party vendor packages"> <sect2 id="faq-repmgr-conf-data-directory">
<title>Are &repmgr; packages compatible with <literal>$third_party_vendor</literal>'s packages?</title> <title>Why do I need to specify the data directory location in repmgr.conf?</title>
<para> <para>
&repmgr; packages provided by EnterpriseDB are compatible with the community-provided PostgreSQL In some circumstances &repmgr; may need to access a PostgreSQL data
packages and specified software provided by EnterpriseDB. directory while the PostgreSQL server is not running, e.g. to confirm
</para> it shut down cleanly during a <link linkend="performing-switchover">switchover</link>.
<para> </para>
A number of other vendors provide their own versions of PostgreSQL packages, often with different <para>
package naming schemes and/or file locations. Additionally, this provides support when using &repmgr; on PostgreSQL 9.6 and
</para> earlier, where the <literal>repmgr</literal> user is not a superuser; in that
<para> case the <literal>repmgr</literal> user will not be able to access the
We cannot guarantee that &repmgr; packages will be compatible with these packages. <literal>data_directory</literal> configuration setting, access to which is restricted
It may be possible to override package dependencies (e.g. <literal>rpm --nodeps</literal> to superusers. (In PostgreSQL 10 and later, non-superusers can be added to the
for CentOS-based systems or <literal>dpkg --force-depends</literal> for Debian-based systems). group <option>pg_read_all_settings</option> which will enable them to read this setting).
</para> </para>
</sect2> </sect2>
</sect1> </sect1>
<sect1 id="faq-repmgr" xreflabel="repmgr"> <sect1 id="faq-repmgr" xreflabel="repmgr">
<title><command>repmgr</command></title> <title><command>repmgr</command></title>
<sect2 id="faq-register-existing-node" xreflabel="registering an existing node"> <sect2 id="faq-register-existing-node" xreflabel="registering an existing node">
<title>Can I register an existing PostgreSQL server with repmgr?</title> <title>Can I register an existing PostgreSQL server with repmgr?</title>
<para> <para>
Yes, any existing PostgreSQL server which is part of the same replication Yes, any existing PostgreSQL server which is part of the same replication
cluster can be registered with &repmgr;. There's no requirement for a cluster can be registered with &repmgr;. There's no requirement for a
standby to have been cloned using &repmgr;. standby to have been cloned using &repmgr;.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-clone-other-source" > <sect2 id="faq-repmgr-clone-other-source" >
<title>Can I use a standby not cloned by &repmgr; as a &repmgr; node?</title> <title>Can I use a standby not cloned by &repmgr; as a &repmgr; node?</title>
<para> <para>
For a standby which has been manually cloned or recovered from an external For a standby which has been manually cloned or recovered from an external
backup manager such as Barman, the command backup manager such as Barman, the command
<command><link linkend="repmgr-standby-clone">repmgr standby clone --replication-conf-only</link></command> <command><link linkend="repmgr-standby-clone">repmgr standby clone --recovery-conf-only</link></command>
can be used to create the correct <filename>recovery.conf</filename> file for can be used to create the correct <filename>recovery.conf</filename> file for
use with &repmgr; (and will create a replication slot if required). Once this has been done, use with &repmgr; (and will create a replication slot if required). Once this has been done,
<link linkend="repmgr-standby-register">register the node</link> as usual. <link linkend="repmgr-standby-register">register the node</link> as usual.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-recovery-conf" > <sect2 id="faq-repmgr-recovery-conf" >
<title>What does &repmgr; write in <filename>recovery.conf</filename>, and what options can be set there?</title> <title>What does &repmgr; write in <filename>recovery.conf</filename>, and what options can be set there?</title>
<para> <para>
See section <link linkend="repmgr-standby-clone-recovery-conf">Customising recovery.conf</link>. See section <link linkend="repmgr-standby-clone-recovery-conf">Customising recovery.conf</link>.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-failed-primary-standby" xreflabel="Reintegrate a failed primary as a standby"> <sect2 id="faq-repmgr-failed-primary-standby" xreflabel="Reintegrate a failed primary as a standby">
<title>How can a failed primary be re-added as a standby?</title> <title>How can a failed primary be re-added as a standby?</title>
<para> <para>
This is a two-stage process. First, the failed primary's data directory This is a two-stage process. First, the failed primary's data directory
must be re-synced with the current primary; secondly the failed primary must be re-synced with the current primary; secondly the failed primary
needs to be re-registered as a standby. needs to be re-registered as a standby.
</para> </para>
<para> <para>
It's possible to use <command>pg_rewind</command> to re-synchronise the existing data It's possible to use <command>pg_rewind</command> to re-synchronise the existing data
directory, which will usually be much directory, which will usually be much
faster than re-cloning the server. However <command>pg_rewind</command> can only faster than re-cloning the server. However <command>pg_rewind</command> can only
be used if PostgreSQL either has <varname>wal_log_hints</varname> enabled, or be used if PostgreSQL either has <varname>wal_log_hints</varname> enabled, or
data checksums were enabled when the cluster was initialized. data checksums were enabled when the cluster was initialized.
</para> </para>
<para> <para>
Note that <command>pg_rewind</command> is available as part of the core PostgreSQL Note that <command>pg_rewind</command> is available as part of the core PostgreSQL
distribution from PostgreSQL 9.5, and as a third-party utility for PostgreSQL 9.3 and 9.4. distribution from PostgreSQL 9.5, and as a third-party utility for PostgreSQL 9.3 and 9.4.
</para> </para>
<para> <para>
&repmgr; provides the command <command>repmgr node rejoin</command> which can &repmgr; provides the command <command>repmgr node rejoin</command> which can
optionally execute <command>pg_rewind</command>; see the <xref linkend="repmgr-node-rejoin"/> optionally execute <command>pg_rewind</command>; see the <xref linkend="repmgr-node-rejoin"/>
documentation for details, in particular the section <xref linkend="repmgr-node-rejoin-pg-rewind"/>. documentation for details, in particular the section <xref linkend="repmgr-node-rejoin-pg-rewind"/>.
</para> </para>
<para> <para>
If <command>pg_rewind</command> cannot be used, then the data directory will need If <command>pg_rewind</command> cannot be used, then the data directory will need
to be re-cloned from scratch. to be re-cloned from scratch.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-check-configuration" xreflabel="Check PostgreSQL configuration"> <sect2 id="faq-repmgr-check-configuration" xreflabel="Check PostgreSQL configuration">
<title>Is there an easy way to check my primary server is correctly configured for use with &repmgr;?</title> <title>Is there an easy way to check my primary server is correctly configured for use with &repmgr;?</title>
<para> <para>
Execute <command><link linkend="repmgr-standby-clone">repmgr standby clone</link></command> Execute <command><link linkend="repmgr-standby-clone">repmgr standby clone</link></command>
with the <literal>--dry-run</literal> option; this will report any configuration problems with the <literal>--dry-run</literal> option; this will report any configuration problems
which need to be rectified. which need to be rectified.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-clone-skip-config-files" xreflabel=""> <sect2 id="faq-repmgr-clone-skip-config-files" xreflabel="">
<title>When cloning a standby, how can I get &repmgr; to copy <title>When cloning a standby, how can I get &repmgr; to copy
<filename>postgresql.conf</filename> and <filename>pg_hba.conf</filename> from the PostgreSQL configuration <filename>postgresql.conf</filename> and <filename>pg_hba.conf</filename> from the PostgreSQL configuration
directory in <filename>/etc</filename>?</title> directory in <filename>/etc</filename>?</title>
<para> <para>
Use the command line option <literal>--copy-external-config-files</literal>. For more details Use the command line option <literal>--copy-external-config-files</literal>. For more details
see <xref linkend="repmgr-standby-clone-config-file-copying"/>. see <xref linkend="repmgr-standby-clone-config-file-copying"/>.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-shared-preload-libraries-no-repmgrd" xreflabel="shared_preload_libraries without repmgrd"> <sect2 id="faq-repmgr-shared-preload-libaries-no-repmgrd" xreflabel="shared_preload_libraries without repmgrd">
<title>Do I need to include <literal>shared_preload_libraries = 'repmgr'</literal> <title>Do I need to include <literal>shared_preload_libraries = 'repmgr'</literal>
in <filename>postgresql.conf</filename> if I'm not using &repmgrd;?</title> in <filename>postgresql.conf</filename> if I'm not using &repmgrd;?</title>
<para> <para>
No, the <literal>repmgr</literal> shared library is only needed when running &repmgrd;. No, the <literal>repmgr</literal> shared library is only needed when running &repmgrd;.
If you later decide to run &repmgrd;, you just need to add If you later decide to run &repmgrd;, you just need to add
<literal>shared_preload_libraries = 'repmgr'</literal> and restart PostgreSQL. <literal>shared_preload_libraries = 'repmgr'</literal> and restart PostgreSQL.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-permissions" xreflabel="Replication permission problems"> <sect2 id="faq-repmgr-permissions" xreflabel="Replication permission problems">
<title>I've provided replication permission for the <literal>repmgr</literal> user in <filename>pg_hba.conf</filename> <title>I've provided replication permission for the <literal>repmgr</literal> user in <filename>pg_hba.conf</filename>
but <command>repmgr</command>/&repmgrd; complains it can't connect to the server... Why?</title> but <command>repmgr</command>/&repmgrd; complains it can't connect to the server... Why?</title>
<para> <para>
<command>repmgr</command> and &repmgrd; need to be able to connect to the repmgr database <command>repmgr</command> and &repmgrd; need to be able to connect to the repmgr database
with a normal connection to query metadata. The <literal>replication</literal> connection with a normal connection to query metadata. The <literal>replication</literal> connection
permission is for PostgreSQL's streaming replication (and doesn't necessarily need to be the <literal>repmgr</literal> user). permission is for PostgreSQL's streaming replication (and doesn't necessarily need to be the <literal>repmgr</literal> user).
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-clone-provide-primary-conninfo" xreflabel="Providing primary connection parameters"> <sect2 id="faq-repmgr-clone-provide-primary-conninfo" xreflabel="Providing primary connection parameters">
<title>When cloning a standby, why do I need to provide the connection parameters <title>When cloning a standby, why do I need to provide the connection parameters
for the primary server on the command line, not in the configuration file?</title> for the primary server on the command line, not in the configuration file?</title>
<para> <para>
Cloning a standby is a one-time action; the role of the server being cloned Cloning a standby is a one-time action; the role of the server being cloned
from could change, so fixing it in the configuration file would create from could change, so fixing it in the configuration file would create
confusion. If &repmgr; needs to establish a connection to the primary confusion. If &repmgr; needs to establish a connection to the primary
server, it can retrieve this from the <literal>repmgr.nodes</literal> table on the local server, it can retrieve this from the <literal>repmgr.nodes</literal> table on the local
node, and if necessary scan the replication cluster until it locates the active primary. node, and if necessary scan the replication cluster until it locates the active primary.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-clone-waldir-xlogdir" xreflabel="Providing a custom WAL directory"> <sect2 id="faq-repmgr-clone-waldir-xlogdir" xreflabel="Providing a custom WAL directory">
<title>When cloning a standby, how do I ensure the WAL files are placed in a custom directory?</title> <title>When cloning a standby, how do I ensure the WAL files are placed in a custom directory?</title>
<para> <para>
Provide the option <literal>--waldir</literal> (<literal>--xlogdir</literal> in PostgreSQL 9.6 Provide the option <literal>--waldir</literal> (<literal>--xlogdir</literal> in PostgreSQL 9.6
and earlier) with the absolute path to the WAL directory in <varname>pg_basebackup_options</varname>. and earlier) with the absolute path to the WAL directory in <varname>pg_basebackup_options</varname>.
For more details see <xref linkend="cloning-advanced-pg-basebackup-options"/>. For more details see <xref linkend="cloning-advanced-pg-basebackup-options"/>.
</para> </para>
<para> </sect2>
In &repmgr; 5.2 and later, this setting will also be honoured when cloning from Barman.
</para>
</sect2>
<sect2 id="faq-repmgr-events-no-fkey" xreflabel="No foreign key on node_id in repmgr.events"> <sect2 id="faq-repmgr-events-no-fkey" xreflabel="No foreign key on node_id in repmgr.events">
<title>Why is there no foreign key on the <literal>node_id</literal> column in the <literal>repmgr.events</literal> <title>Why is there no foreign key on the <literal>node_id</literal> column in the <literal>repmgr.events</literal>
table?</title> table?</title>
<para> <para>
Under some circumstances event notifications can be generated for servers Under some circumstances event notifications can be generated for servers
which have not yet been registered; it's also useful to retain a record which have not yet been registered; it's also useful to retain a record
of events which includes servers removed from the replication cluster of events which includes servers removed from the replication cluster
which no longer have an entry in the <literal>repmgr.nodes</literal> table. which no longer have an entry in the <literal>repmgr.nodes</literal> table.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-recovery-conf-quoted-values" xreflabel="Quoted values in recovery.conf"> <sect2 id="faq-repmgr-recovery-conf-quoted-values" xreflabel="Quoted values in recovery.conf">
<title>Why are some values in <filename>recovery.conf</filename> surrounded by pairs of single quotes?</title> <title>Why are some values in <filename>recovery.conf</filename> surrounded by pairs of single quotes?</title>
<para> <para>
This is to ensure that user-supplied values which are written as parameter values in <filename>recovery.conf</filename> This is to ensure that user-supplied values which are written as parameter values in <filename>recovery.conf</filename>
are escaped correctly and do not cause errors when <filename>recovery.conf</filename> is parsed. are escaped correctly and do not cause errors when <filename>recovery.conf</filename> is parsed.
</para> </para>
<para> <para>
The escaping is performed by an internal PostgreSQL routine, which leaves strings consisting The escaping is performed by an internal PostgreSQL routine, which leaves strings consisting
of digits and alphabetical characters only as-is, but wraps everything else in pairs of single quotes, of digits and alphabetical characters only as-is, but wraps everything else in pairs of single quotes,
even if the string does not contain any characters which need escaping. even if the string does not contain any characters which need escaping.
</para> </para>
</sect2> </sect2>
<sect2 id="faq-repmgr-exclude-metadata-from-dump" xreflabel="Excluding repmgr metadata from pg_dump output">
<title>How can I exclude &repmgr; metadata from <application>pg_dump</application> output?</title>
<para>
Beginning with &repmgr; 5.2, the metadata tables associated with the &repmgr; extension
(<literal>repmgr.nodes</literal>, <literal>repmgr.events</literal> and <literal>repmgr.monitoring_history</literal>)
have been marked as dumpable as they contain configuration and user-generated data.
</para>
<para>
To exclude these from <application>pg_dump</application> output, add the flag <option>--exclude-schema=repmgr</option>.
</para>
<para>
To exclude individual &repmgr; metadata tables from <application>pg_dump</application> output, add the flag
e.g. <option>--exclude-table=repmgr.monitoring_history</option>. This flag can be provided multiple times
to exclude individual tables,
</para>
</sect2>
</sect1>
<sect1 id="faq-repmgrd" xreflabel="repmgrd">
<title>&repmgrd;</title>
<sect2 id="faq-repmgrd-prevent-promotion" xreflabel="Prevent standby from being promoted to primary"> </sect1>
<title>How can I prevent a node from ever being promoted to primary?</title>
<para>
In <filename>repmgr.conf</filename>, set its priority to a value of <literal>0</literal>; apply the changed setting with
<command><link linkend="repmgr-standby-register">repmgr standby register --force</link></command>.
</para>
<para>
Additionally, if <varname>failover</varname> is set to <literal>manual</literal>, the node will never
be considered as a promotion candidate.
</para>
</sect2>
<sect2 id="faq-repmgrd-delayed-standby" xreflabel="Delayed standby support"> <sect1 id="faq-repmgrd" xreflabel="repmgrd">
<title>Does &repmgrd; support delayed standbys?</title> <title>&repmgrd;</title>
<para>
&repmgrd; can monitor delayed standbys - those set up with
<varname>recovery_min_apply_delay</varname> set to a non-zero value
in <filename>recovery.conf</filename> - but as it's not currently possible
to directly examine the value applied to the standby, &repmgrd;
may not be able to properly evaluate the node as a promotion candidate.
</para>
<para>
We recommend that delayed standbys are explicitly excluded from promotion
by setting <varname>priority</varname> to <literal>0</literal> in
<filename>repmgr.conf</filename>.
</para>
<para>
Note that after registering a delayed standby, &repmgrd; will only start
once the metadata added in the primary node has been replicated.
</para>
</sect2>
<sect2 id="faq-repmgrd-logfile-rotate" xreflabel="repmgrd logfile rotation">
<title>How can I get &repmgrd; to rotate its logfile?</title>
<para>
Configure your system's <literal>logrotate</literal> service to do this; see <xref linkend="repmgrd-log-rotation"/>.
</para>
</sect2> <sect2 id="faq-repmgrd-prevent-promotion" xreflabel="Prevent standby from being promoted to primary">
<title>How can I prevent a node from ever being promoted to primary?</title>
<para>
In <filename>repmgr.conf</filename>, set its priority to a value of <literal>0</literal>; apply the changed setting with
<command><link linkend="repmgr-standby-register">repmgr standby register --force</link></command>.
</para>
<para>
Additionally, if <varname>failover</varname> is set to <literal>manual</literal>, the node will never
be considered as a promotion candidate.
</para>
</sect2>
<sect2 id="faq-repmgrd-recloned-no-start" xreflabel="repmgrd not restarting after node cloned"> <sect2 id="faq-repmgrd-delayed-standby" xreflabel="Delayed standby support">
<title>I've recloned a failed primary as a standby, but &repmgrd; refuses to start?</title> <title>Does &repmgrd; support delayed standbys?</title>
<para> <para>
Check you registered the standby after recloning. If unregistered, the standby &repmgrd; can monitor delayed standbys - those set up with
cannot be considered as a promotion candidate even if <varname>failover</varname> is set to <varname>recovery_min_apply_delay</varname> set to a non-zero value
<literal>automatic</literal>, which is probably not what you want. &repmgrd; will start if in <filename>recovery.conf</filename> - but as it's not currently possible
<varname>failover</varname> is set to <literal>manual</literal> so the node's replication status can still to directly examine the value applied to the standby, &repmgrd;
be monitored, if desired. may not be able to properly evaluate the node as a promotion candidate.
</para> </para>
</sect2> <para>
We recommend that delayed standbys are explicitly excluded from promotion
by setting <varname>priority</varname> to <literal>0</literal> in
<filename>repmgr.conf</filename>.
</para>
<para>
Note that after registering a delayed standby, &repmgrd; will only start
once the metadata added in the primary node has been replicated.
</para>
</sect2>
<sect2 id="faq-repmgrd-pg-bindir" xreflabel="repmgrd does not apply pg_bindir to promote_command or follow_command"> <sect2 id="faq-repmgrd-logfile-rotate" xreflabel="repmgrd logfile rotation">
<title> <title>How can I get &repmgrd; to rotate its logfile?</title>
&repmgrd; ignores pg_bindir when executing <varname>promote_command</varname> or <varname>follow_command</varname> <para>
</title> Configure your system's <literal>logrotate</literal> service to do this; see <xref linkend="repmgrd-log-rotation"/>.
<para> </para>
<varname>promote_command</varname> or <varname>follow_command</varname> can be user-defined scripts,
so &repmgr; will not apply <option>pg_bindir</option> even if executing &repmgr;. Always provide the full
path; see <xref linkend="repmgrd-automatic-failover-configuration"/> for more details.
</para>
</sect2>
<sect2 id="faq-repmgrd-startup-no-upstream" xreflabel="repmgrd does not start if upstream node is not running"> </sect2>
<title>
&repmgrd; aborts startup with the error "<literal>upstream node must be running before repmgrd can start</literal>"
</title>
<para>
&repmgrd; does this to avoid starting up on a replication cluster
which is not in a healthy state. If the upstream is unavailable, &repmgrd;
may initiate a failover immediately after starting up, which could have unintended side-effects,
particularly if &repmgrd; is not running on other nodes.
</para>
<para>
In particular, it's possible that the node's local copy of the <literal>repmgr.nodes</literal> copy
is out-of-date, which may lead to incorrect failover behaviour.
</para>
<para>
The onus is therefore on the administrator to manually set the cluster to a stable, healthy state before
starting &repmgrd;.
</para>
</sect2>
</sect1> <sect2 id="faq-repmgrd-recloned-no-start" xreflabel="repmgrd not restarting after node cloned">
<title>I've recloned a failed primary as a standby, but &repmgrd; refuses to start?</title>
<para>
Check you registered the standby after recloning. If unregistered, the standby
cannot be considered as a promotion candidate even if <varname>failover</varname> is set to
<literal>automatic</literal>, which is probably not what you want. &repmgrd; will start if
<varname>failover</varname> is set to <literal>manual</literal> so the node's replication status can still
be monitored, if desired.
</para>
</sect2>
<sect2 id="faq-repmgrd-pg-bindir" xreflabel="repmgrd does not apply pg_bindir to promote_command or follow_command">
<title>
&repmgrd; ignores pg_bindir when executing <varname>promote_command</varname> or <varname>follow_command</varname>
</title>
<para>
<varname>promote_command</varname> or <varname>follow_command</varname> can be user-defined scripts,
so &repmgr; will not apply <option>pg_bindir</option> even if excuting &repmgr;. Always provide the full
path; see <xref linkend="repmgrd-automatic-failover-configuration"/> for more details.
</para>
</sect2>
<sect2 id="faq-repmgrd-startup-no-upstream" xreflabel="repmgrd does not start if upstream node is not running">
<title>
&repmgrd; aborts startup with the error "<literal>upstream node must be running before repmgrd can start</literal>"
</title>
<para>
&repmgrd; does this to avoid starting up on a replication cluster
which is not in a healthy state. If the upstream is unavailable, &repmgrd;
may initiate a failover immediately after starting up, which could have unintended side-effects,
particularly if &repmgrd; is not running on other nodes.
</para>
<para>
In particular, it's possible that the node's local copy of the <literal>repmgr.nodes</literal> copy
is out-of-date, which may lead to incorrect failover behaviour.
</para>
<para>
The onus is therefore on the adminstrator to manually set the cluster to a stable, healthy state before
starting &repmgrd;.
</para>
</sect2>
</sect1>
</appendix> </appendix>

View File

@@ -52,7 +52,8 @@
<para> <para>
&repmgr; packages are available from the public 2ndQuadrant repository, and also the &repmgr; packages are available from the public 2ndQuadrant repository, and also the
PostgreSQL community repository. The 2ndQuadrant repository is updated immediately PostgreSQL community repository. The 2ndQuadrant repository is updated immediately
after each &repmgr; release. after each
&repmgr; release.
</para> </para>
<table id="centos-2ndquadrant-repository"> <table id="centos-2ndquadrant-repository">
@@ -121,7 +122,7 @@
<row> <row>
<entry>Package name example:</entry> <entry>Package name example:</entry>
<entry><filename>repmgr11-4.4.0-1.rhel7.x86_64</filename></entry> <entry><filename>repmgr10-4.0.4-1.rhel7.x86_64</filename></entry>
</row> </row>
<row> <row>
@@ -131,12 +132,12 @@
<row> <row>
<entry>Installation command:</entry> <entry>Installation command:</entry>
<entry><literal>yum install repmgr11</literal></entry> <entry><literal>yum install repmgr10</literal></entry>
</row> </row>
<row> <row>
<entry>Binary location:</entry> <entry>Binary location:</entry>
<entry><filename>/usr/pgsql-11/bin</filename></entry> <entry><filename>/usr/pgsql-10/bin</filename></entry>
</row> </row>
<row> <row>
@@ -146,22 +147,22 @@
<row> <row>
<entry>Configuration file location:</entry> <entry>Configuration file location:</entry>
<entry><filename>/etc/repmgr/11/repmgr.conf</filename></entry> <entry><filename>/etc/repmgr/10/repmgr.conf</filename></entry>
</row> </row>
<row> <row>
<entry>Data directory:</entry> <entry>Data directory:</entry>
<entry><filename>/var/lib/pgsql/11/data</filename></entry> <entry><filename>/var/lib/pgsql/10/data</filename></entry>
</row> </row>
<row> <row>
<entry>repmgrd service command:</entry> <entry>repmgrd service command:</entry>
<entry><command>systemctl [start|stop|restart|reload] repmgr11</command></entry> <entry><command>systemctl [start|stop|restart|reload] repmgr10</command></entry>
</row> </row>
<row> <row>
<entry>repmgrd service file location:</entry> <entry>repmgrd service file location:</entry>
<entry><filename>/usr/lib/systemd/system/repmgr11.service</filename></entry> <entry><filename>/usr/lib/systemd/system/repmgr10.service</filename></entry>
</row> </row>
<row> <row>
@@ -252,14 +253,20 @@
</indexterm> </indexterm>
<para> <para>
&repmgr; <literal>.deb</literal> packages are provided by 2ndQuadrant as well as the &repmgr; <literal>.deb</literal> packages are provided via the
PostgreSQL Community APT repository, and are available for each community-supported PostgreSQL Community APT repository, and are available for each community-supported
PostgreSQL version, currently supported Debian releases, and currently supported PostgreSQL version, currently supported Debian releases, and currently supported
Ubuntu LTS releases. Ubuntu LTS releases.
</para> </para>
<sect2 id="packages-apt-repository"> <sect2 id="packages-apt-repository">
<title>APT repositories</title> <title>APT repository</title>
<para>
&repmgr; packages are available from the PostgreSQL Community APT repository,
which is updated immediately after each &repmgr; release.
</para>
<table id="apt-2ndquadrant-repository"> <table id="apt-2ndquadrant-repository">
<title>2ndQuadrant public repository</title> <title>2ndQuadrant public repository</title>
@@ -284,7 +291,7 @@
<tbody> <tbody>
<row> <row>
<entry>Repository URL:</entry> <entry>Repository URL:</entry>
<entry><ulink url="https://apt.postgresql.org/">https://apt.postgresql.org/</ulink></entry> <entry><ulink url="http://apt.postgresql.org/">http://apt.postgresql.org/</ulink></entry>
</row> </row>
<row> <row>
<entry>Repository documentation:</entry> <entry>Repository documentation:</entry>
@@ -316,7 +323,7 @@
<row> <row>
<entry>Package name example:</entry> <entry>Package name example:</entry>
<entry><filename>postgresql-11-repmgr</filename></entry> <entry><filename>postgresql-10-repmgr</filename></entry>
</row> </row>
<row> <row>
@@ -326,12 +333,12 @@
<row> <row>
<entry>Installation command:</entry> <entry>Installation command:</entry>
<entry><literal>apt-get install postgresql-11-repmgr</literal></entry> <entry><literal>apt-get install postgresql-10-repmgr</literal></entry>
</row> </row>
<row> <row>
<entry>Binary location:</entry> <entry>Binary location:</entry>
<entry><filename>/usr/lib/postgresql/11/bin</filename></entry> <entry><filename>/usr/lib/postgresql/10/bin</filename></entry>
</row> </row>
<row> <row>
@@ -346,12 +353,12 @@
<row> <row>
<entry>Data directory:</entry> <entry>Data directory:</entry>
<entry><filename>/var/lib/postgresql/11/main</filename></entry> <entry><filename>/var/lib/postgresql/10/main</filename></entry>
</row> </row>
<row> <row>
<entry>PostgreSQL service command:</entry> <entry>PostgreSQL service command:</entry>
<entry><command>systemctl [start|stop|restart|reload] postgresql@11-main</command></entry> <entry><command>systemctl [start|stop|restart|reload] postgresql@10-main</command></entry>
</row> </row>
@@ -375,11 +382,11 @@
</table> </table>
<note> <note>
<para> <para>
When using Debian packages, instead of using the <application>systemd</application> service Instead of using the <application>systemd</application> service command directly,
command directly, it's recommended to execute <command>pg_ctlcluster</command> it's recommended to execute <command>pg_ctlcluster</command> (as <literal>root</literal>,
(as <literal>root</literal>, either directly or via <command>sudo</command>), e.g.: either directly or via <command>sudo</command>), e.g.:
<programlisting> <programlisting>
<command>pg_ctlcluster 11 main [start|stop|restart|reload]</command></programlisting> <command>pg_ctlcluster 10 main [start|stop|restart|reload]</command></programlisting>
</para> </para>
<para> <para>
For pre-<application>systemd</application> systems, <command>pg_ctlcluster</command> For pre-<application>systemd</application> systems, <command>pg_ctlcluster</command>
@@ -397,7 +404,7 @@
</indexterm> </indexterm>
<indexterm> <indexterm>
<primary>packages</primary> <primary>packages</primary>
<secondary>snapshots</secondary> <secondary>snaphots</secondary>
</indexterm> </indexterm>
<para> <para>
@@ -438,7 +445,7 @@ curl https://dl.2ndquadrant.com/default/snapshot/get/9.6/rpm | sudo bash</progra
The package name will be formatted like this: The package name will be formatted like this:
<programlisting> <programlisting>
repmgr96-4.1.1-0.0git320.g5113ab0.1.el7.x86_64.rpm</programlisting> repmgr96-4.1.1-0.0git320.g5113ab0.1.el7.x86_64.rpm</programlisting>
containing the snapshot build number (here: <literal>320</literal>) and the hash containg the snapshot build number (here: <literal>320</literal>) and the hash
of the <application>git</application> commit it was built from (here: <literal>g5113ab0</literal>). of the <application>git</application> commit it was built from (here: <literal>g5113ab0</literal>).
</para> </para>
@@ -470,7 +477,7 @@ repmgr96-4.1.1-0.0git320.g5113ab0.1.el7.x86_64.rpm</programlisting>
<title>Debian/Ubuntu</title> <title>Debian/Ubuntu</title>
<para> <para>
An archive of old packages (<literal>3.3.2</literal> and later) for Debian/Ubuntu-based systems is available here: An archive of old packages (<literal>3.3.2</literal> and later) for Debian/Ubuntu-based systems is available here:
<ulink url="https://apt-archive.postgresql.org/">https://apt-archive.postgresql.org/</ulink> <ulink url="http://atalia.postgresql.org/morgue/r/repmgr/">http://atalia.postgresql.org/morgue/r/repmgr/</ulink>
</para> </para>
</sect2> </sect2>

View File

@@ -15,866 +15,9 @@
See also: <xref linkend="upgrading-repmgr"/> See also: <xref linkend="upgrading-repmgr"/>
</para> </para>
<!-- remember to update the release date in ../repmgr_version.h.in -->
<sect1 id="release-5.3.0">
<title id="release-current">Release 5.3.0</title>
<para><emphasis>Tue 12 October, 2021</emphasis></para>
<para>
&repmgr; 5.3.0 is a major release.
</para>
<para>
This release provides support for <ulink url="https://www.postgresql.org/docs/14/release-14.html">PostgreSQL 14</ulink>,
released in September 2021.
</para>
<sect2>
<title>Improvements</title>
<para>
<itemizedlist>
<listitem>
<para>
<link linkend="repmgr-standby-switchover"><command>repmgr standby switchover</command></link>:
Improve handling of node rejoin failure on the demotion candidate.
</para>
<para>
Previously &repmgr; did not check whether <command>repmgr node rejoin</command> actually
succeeded on the demotion candidate, and would always wait up to <varname>node_rejoin_timeout</varname>
seconds for it to attach to the promotion candidate, even if this would never happen.
</para>
<para>
This makes it easier to identify unexpected events during a switchover operation, such as
the demotion candidate being unexpectedly restarted by an external process.
</para>
<para>
Note that the output of the <link linkend="repmgr-node-rejoin"><command>repmgr node rejoin</command></link>
operation on the demotion candidate will now be logged to a temporary file on that node;
the location of the file will be reported in the error message, if one is emitted.
</para>
</listitem>
<listitem>
<para>
&repmgrd;: at startup, if node record is marked as "inactive", attempt
to set it to "active".
</para>
<para>
This behaviour can be overridden by setting the configuration parameter
<varname>repmgrd_exit_on_inactive_node</varname> to <literal>true</literal>.
</para>
</listitem>
<listitem>
<para>
<command><link linkend="repmgr-node-rejoin">repmgr node rejoin</link></command>:
emit rejoin target note information as <literal>NOTICE</literal>.
</para>
<para>
This makes it clearer what &repmgr; is trying to do.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-node-check">repmgr node check</link>:
option <option>--repmgrd</option> added to check &repmgrd;
status.
</para>
</listitem>
<listitem>
<para>
Add <literal>%p</literal> <link linkend="event-notifications">event notification parameter</link>
providing the node ID of the former primary for the <literal>repmgrd_failover_promote</literal> event.
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
<sect2>
<title>Bug fixes</title>
<para>
<itemizedlist>
<listitem>
<para>
<command><link linkend="repmgr-standby-clone">repmgr standby clone</link></command>:
if using <option>--replication-conf-only</option> on a node
which was set up without replication slots, but the &repmgr; configuration
was since changed to <option>use_replication_slots=1</option>,
&repmgr; will now set <varname>slot_name</varname> in the
node record, if it was previously empty.
</para>
</listitem>
<listitem>
<para>
&repmgrd;: rename internal shared library functions to minimize the
risk of clashes with other shared libraries.
</para>
<para>
This does not affect user-facing SQL functions. However an upgrade
of the installed extension version is required.
</para>
</listitem>
<listitem>
<para>
&repmgrd;: ensure short option <option>-s</option> is accepted.
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
</sect1>
<sect1 id="release-5.2.1">
<title>Release 5.2.1</title>
<para><emphasis>Mon 7 December, 2020</emphasis></para>
<para>
&repmgr; 5.2.1 is a minor release.
</para>
<sect2>
<title>Improvements</title>
<para>
<itemizedlist>
<listitem>
<para>
<link linkend="repmgr-standby-clone">repmgr standby clone</link>:
option <option>--recovery-min-apply-delay</option> added, overriding any
setting present in <filename>repmgr.conf</filename>.
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
<sect2>
<title>Bug fixes</title>
<para>
<itemizedlist>
<listitem>
<para>
Configuration: fix parsing of <option>replication_type</option> configuration parameter. GitHub #672.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-clone">repmgr standby clone</link>:
handle case where <filename>postgresql.auto.conf</filename> is absent on the
source node.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-clone">repmgr standby clone</link>:
in PostgreSQL 11 and later, an existing data directory's permissions
will not be changed to <option>0700</option> if they are already set to
<option>0750</option>.
</para>
</listitem>
<listitem>
<para>
&repmgrd;: prevent termination when local node not available and
<option>standby_disconnect_on_failover</option> is set. GitHub #675.
</para>
</listitem>
<listitem>
<para>
&repmgrd;: ensure <option>reconnect_interval</option> is correctly handled.
GitHub #673.
</para>
</listitem>
<listitem>
<para>
<command>repmgr witness --help</command>: fix <command>witness unregister</command>
description. GitHub #676.
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
</sect1>
<sect1 id="release-5.2.0">
<title>Release 5.2.0</title>
<para><emphasis>Thu 22 October, 2020</emphasis></para>
<para>
&repmgr; 5.2.0 is a major release.
</para>
<para>
This release provides support for <ulink url="https://www.postgresql.org/docs/13/release-13.html">PostgreSQL 13</ulink>, released in September 2020.
</para>
<para>
This release removes support for PostgreSQL 9.3, which was
<ulink url="https://www.postgresql.org/docs/9.3/release-9-3-25.html">designated EOL in November 2018</ulink>.
</para>
<sect2>
<title>General improvements</title>
<para>
<itemizedlist>
<listitem>
<para>
Configuration: support <command>include</command>, <command>include_dir</command> and
<command>include_if_exists</command> directives (see <xref linkend="configuration-file-include-directives"/>).
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-switchover"><command>repmgr standby switchover</command></link>:
Improve sanity check failure log output from the demotion candidate.
</para>
<para>
If database connection configuration is not consistent across all nodes, it's
possible remote &repmgr; invocations (e.g. during switchover, from the promotion candidate
to the demotion candidate) will not be able to connect to the database. This will
now be explicitly reported as a database connection failure, rather than as a failure
of the respective sanity check.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-cluster-crosscheck">repmgr cluster crosscheck</link> /
<link linkend="repmgr-cluster-matrix">repmgr cluster matrix</link>:
improve text mode output format, in particular so that node identifiers of arbitrary length are
displayed correctly.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-primary-unregister">repmgr primary unregister</link>:
the <option>--force</option> can be provided to unregister an active primary node, provided
it has no registered standby nodes.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-clone">repmgr standby clone</link>: new option
<option>--verify-backup</option> to run PostgreSQL's
<ulink url="https://www.postgresql.org/docs/13/app-pgverifybackup.html">pg_verifybackup</ulink>
utility after cloning a standby to verify the integrity of the copied data
(PostgreSQL 13 and later).
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-clone">repmgr standby clone</link>:
when cloning from Barman, setting <option>--waldir</option>
(PostgreSQL 9.6 and earlier: <option>--xlogdir</option>) in
<option>pg_basebackup_options</option> will cause &repmgr; to create
a WAL directory outside of the main data directory and symlink
it from there, in the same way as would happen when cloning
using <application>pg_basebackup</application>.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-follow">repmgr standby follow</link>:
In PostgreSQL 13 and later, a standby no longer requires a restart to
follow a new upstream node.
</para>
<para>
The old behaviour (always restarting the standby to follow a new node)
can be restored by setting the configuration file parameter
<varname>standby_follow_restart</varname> to <literal>true</literal>.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-node-rejoin">repmgr node rejoin</link>:
enable a node to attach to a target node even the target node
has a lower timeline (PostgreSQL 9.6 and later).
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-node-rejoin">repmgr node rejoin</link>:
in PostgreSQL 13 and later, support <application>pg_rewind</application>'s
ability to automatically run crash recovery on a PostgreSQL instance
which was not shut down cleanly.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-node-check">repmgr node check</link>:
option <option>--db-connection</option> added to check if &repmgr;
can connect to the database on the local node.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-node-check">repmgr node check</link>:
report database connection error if the <option>--optformat</option> was provided.
</para>
</listitem>
<listitem>
<para>
Improve handling of pg_control read errors.
</para>
</listitem>
<listitem>
<para>
It is now possible to dump the contents of &repmgr; metadata tables with
<application>pg_dump</application>.
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
<sect2>
<title>repmgrd enhancements</title>
<para>
<itemizedlist>
<listitem>
<para>
Following additional parameters can be provided to <varname>failover_validation_command</varname>:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara><literal>%n</literal>: node ID</simpara>
</listitem>
<listitem>
<simpara><literal>%a</literal>: node name</simpara>
</listitem>
<listitem>
<simpara><literal>%v</literal>: number of visible nodes</simpara>
</listitem>
<listitem>
<simpara><literal>%u</literal>: number of shared upstream nodes</simpara>
</listitem>
<listitem>
<simpara><literal>%t</literal>: total number of nodes</simpara>
</listitem>
</itemizedlist>
</para>
</listitem>
<listitem>
<para>
Configuration option <varname>always_promote</varname> (default: <literal>false</literal>)
to control whether a node should be promoted if the &repmgr; metadata is not up-to-date
on that node.
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
<sect2>
<title>Bug fixes</title>
<para>
<itemizedlist>
<listitem>
<para>
<link linkend="repmgr-standby-clone">repmgr standby clone</link>:
fix issue with cloning from Barman where the tablespace mapping file was
not flushed to disk before attempting to retrieve files from Barman. GitHub #650.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-node-rejoin">repmgr node rejoin</link>:
ensure that when verifying a standby node has attached to its upstream, the
node has started streaming before confirming the success of the rejoin operation.
</para>
</listitem>
<listitem>
<para>
&repmgrd;: ensure primary connection is reset if same as upstream. GitHub #633.
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
</sect1>
<sect1 id="release-5.1.0">
<title>Release 5.1.0</title>
<para><emphasis>Mon 13 April, 2020</emphasis></para>
<para>
&repmgr; 5.1.0 is a major release.
</para>
<para>
For details on how to upgrade an existing &repmgr; installation, see
documentation section <link linkend="upgrading-major-version">Upgrading a major version release</link>.
</para>
<para>
If &repmgrd; is in use, a PostgreSQL restart <emphasis>is</emphasis> required;
in that case we suggest combining this &repmgr; upgrade with the next PostgreSQL
minor release, which will require a PostgreSQL restart in any case.
</para>
<sect2>
<title>Compatibility changes</title>
<para>
The <link linkend="repmgr-standby-clone"><command>repmgr standby clone</command></link>
<option>--recovery-conf-only</option> option has been renamed to
<option>--replication-conf-only</option>. <option>--recovery-conf-only</option> will
still be accepted as an alias.
</para>
</sect2>
<sect2>
<title>General improvements</title>
<para>
<itemizedlist>
<listitem>
<para>
The requirement that the &repmgr; user is a database superuser has been
removed as far as possible.
</para>
<para>
In theory, &repmgr; can be operated with a normal database user for managing
the &repmgr; database, and a separate replication user for managing replication
connections (and replication slots, if these are in use).
</para>
<para>
Some operations will still require superuser permissions, e.g. for issuing
a <command>CHECKPOINT</command> as par of a switchover operation; in this case
a valid superuser should be provided with the <option>-S</option>/<option>--superuser</option>
option.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-clone"><command>repmgr standby clone</command></link>:
Warn if neither of data page checksums or <option>wal_log_hints</option> are active,
as this will preclude later usage of <command>pg_rewind</command>.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-promote"><command>repmgr standby promote</command></link>:
when executed with <option>--dry-run</option>, the method which would be used to promote the node
will be displayed.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-follow"><command>repmgr standby follow</command></link>:
Improve logging and checking of potential failure situations.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-switchover"><command>repmgr standby switchover</command></link>:
Replication configuration files (PostgreSQL 11 and earlier:
<filename>recovery.conf</filename>; PostgreSQL 12 and later: <filename>postgresql.auto.conf</filename>)
will be checked to ensure they are owned by the same user who owns the PostgreSQL
data directory.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-switchover"><command>repmgr standby switchover</command></link>:
Provide additional information in <option>--dry-run mode</option> output.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-switchover"><command>repmgr standby switchover</command></link>:
Checks that the demotion candidate's registered repmgr.conf file can be found, to
prevent confusing references to an incorrectly configured data directory. GitHub 615.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-node-check"><command>repmgr node check</command></link>:
accept option <option>-S</option>/<option>--superuser</option>. GitHub #621.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-node-check"><command>repmgr node check</command></link>:
add <option>--upstream</option> option to check whether the node is attached
to the expected upstream node.
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
<sect2>
<title>Bug fixes</title>
<para>
<itemizedlist>
<listitem>
<para>
Ensure <link linkend="repmgr-node-rejoin"><command>repmgr node rejoin</command></link>
checks for available replication slots on the rejoin target.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-follow"><command>repmgr standby follow</command></link> and
<link linkend="repmgr-node-rejoin"><command>repmgr node rejoin</command></link> will now return
an error code if the operation fails if a replication slot is not available or cannot
be created on the follow/rejoin target.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-promote"><command>repmgr standby promote</command></link>:
in <option>--dry-run mode</option>, display promote command which will be executed.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-promote"><command>repmgr standby promote</command></link>
will check if the <literal>repmgr</literal> user has permission to execute
<function>pg_promote()</function> and fall back to <command>pg_ctl promote</command> if
necessary.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-switchover"><command>repmgr standby switchover</command></link>:
check for demotion candidate reattachment as late as possible to avoid spurious failure
reports.
</para>
</listitem>
<listitem>
<para>
&repmgrd;: check for presence of <option>promote_command</option> and
<option>follow_command</option> on receipt of <literal>SIGHUP</literal>. GitHub 614.
</para>
</listitem>
<listitem>
<para>
Fix situation where replication connections were not created correctly, which
could lead to spurious replication connection failures in some situations, e.g.
where password files are used.
</para>
</listitem>
<listitem>
<para>
Ensure <filename>postgresql.auto.conf</filename> is created with
correct permissions (PostgreSQL 12 and later).
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
</sect1>
<sect1 id="release-5.0">
<title>Release 5.0</title>
<para><emphasis>Tue 15 October, 2019</emphasis></para>
<para>
&repmgr; 5.0 is a major release.
</para>
<para>
For details on how to upgrade an existing &repmgr; installation, see
documentation section <link linkend="upgrading-major-version">Upgrading a major version release</link>.
</para>
<para>
If &repmgrd; is in use, a PostgreSQL restart <emphasis>is</emphasis> required;
in that case we suggest combining this &repmgr; upgrade with the next PostgreSQL
minor release, which will require a PostgreSQL restart in any case.
</para>
<sect2>
<title>Compatibility changes</title>
<sect3 id="repmgr-5-0-config-file-parsing">
<title>Configuration file parsing has been made stricter</title>
<para>
&repmgr; now parses <link linkend="configuration-file-format">configuration files</link>
in the same way that PostgreSQL itself does, which means some files used with
earlier &repmgr; versions may need slight modification before they can be used
with &repmgr; 5 and later.
</para>
<para>
The main change is that string parameters should always be enclosed in single quotes.
</para>
<para>
For example, in &repmgr; 4.4 and earlier, the following <filename>repmgr.conf</filename>
entry was valid:
<programlisting>
conninfo=host=node1 user=repmgr dbname=repmgr connect_timeout=2</programlisting>
This must now be changed to:
<programlisting>
conninfo='host=node1 user=repmgr dbname=repmgr connect_timeout=2'</programlisting>
</para>
<para>
Note that simple string identifiers (e.g. <literal>node_name=node1</literal>)
may remain unquoted, though we recommend always enclosing
strings in single quotes.
</para>
<para>
Additionally, leading/trailing white space between single quotes will no longer
be trimmed; the entire string between single quotes will be
taken literally.
</para>
<para>
Strings enclosed in double quotes (e.g. <literal>node_name=&quot;node1&quot;</literal>)
will now be rejected; previously they were accepted, but the double quotes were
interpreted as part of the string, which was a frequent cause of confusion.
</para>
<para>
This syntax matches that used by PostgreSQL itself.
</para>
</sect3>
<sect3>
<title>Some &quot;repmgr daemon ...&quot; commands renamed</title>
<para>
Some &quot;<command>repmgr daemon ...</command>&quot; commands have been renamed to
&quot;<command>repmgr service ...</command>&quot; as they have a cluster-wide effect
and to avoid giving the impression they affect only the local &repmgr; daemon.
</para>
<para>
The following commands are affected:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
<command>repmgr daemon pause</command>
(now <link linkend="repmgr-service-pause"><command>repmgr service pause</command></link>)
</simpara>
</listitem>
<listitem>
<simpara>
<command>repmgr daemon unpause</command>
(now <link linkend="repmgr-service-unpause"><command>repmgr service unpause</command></link>)
</simpara>
</listitem>
<listitem>
<simpara>
<command>repmgr daemon status</command>
(now <link linkend="repmgr-service-status"><command>repmgr service status</command></link>)
</simpara>
</listitem>
</itemizedlist>
</para>
<para>
The &quot;<command>repmgr daemon ...</command>&quot; form will still be accepted
for backwards compatibility.
</para>
</sect3>
<sect3>
<title>Some deprecated command line options removed</title>
<para>
The following command line options, which have been deprecated since &repmgr; 3.3
(and which no longer had any effect other than to generate a warning about their use)
have been removed:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara><option>--data-dir</option></simpara>
</listitem>
<listitem>
<simpara><option>--no-conninfo-password</option></simpara>
</listitem>
<listitem>
<simpara><option>--recovery-min-apply-delay</option></simpara>
</listitem>
</itemizedlist>
</para>
</sect3>
</sect2>
<sect2>
<title>General enhancements</title>
<para>
<itemizedlist>
<listitem>
<para>
Support for PostgreSQL 12 added.
</para>
<para>
Beginning with PostgreSQL 12, replication configuration has been integrated
into the main PostgreSQL configuraton system and the conventional
<filename>recovery.conf</filename> file is no longer valid.
</para>
<para>
&repmgr; has been modified to be compatible with this change.
</para>
<para>
&repmgr; additionally takes advantage of the new <command>pg_promote()</command>
function, which enables a standby to be promoted to primary using an SQL
command.
</para>
<para>
For an overview of general changes to replication configuration, see this blog entry:
<ulink url="https://www.2ndquadrant.com/en/blog/replication-configuration-changes-in-postgresql-12/">Replication configuration changes in PostgreSQL 12</ulink>
</para>
</listitem>
<listitem>
<para>
The &repmgr; configuration file is now parsed using
<command>flex</command>, meaning it will be parsed in
the same way as PostgreSQL parses its own configuration
files.
</para>
<para>
This makes configuration file parsing more robust
and consistent.
</para>
<para>
See item <link linkend="repmgr-5-0-config-file-parsing">Configuration file parsing has been made stricter</link>
for details.
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-clone"><command>repmgr standby clone</command></link>:
checks for availability of the &repmgr; extension on the upstream node have
been improved and error messages improved.
</para>
</listitem>
<listitem>
<para>
When executing &repmgr; remotely, if the &repmgr; log level was explicitly
provided (with <option>-L</option>/<option>--log-level</option>), that log level
will be passed to the remote &repmgr;.
</para>
<para>
This makes it possible to return log output when executing repmgr
remotely at a different level to the one defined in the remote
&repmgr;'s <filename>repmgr.conf</filename>.
</para>
<para>
This is particularly useful when <literal>DEBUG</literal> output is required.
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
<sect2>
<title>Bug fixes</title>
<para>
<itemizedlist>
<listitem>
<para>
Check role membership when trying to read <literal>pg_settings</literal>.
</para>
<para>
Previously &repmgr; assumed only superusers could read <literal>pg_settings</literal>,
but from PostgreSQL 10, all members of the roles <literal>pg_read_all_settings</literal>
or <literal>pg_monitor</literal> are permitted to do this as well.
</para>
</listitem>
<listitem>
<para>
&repmgrd;: Fix handling of upstream node change check.
</para>
<para>
&repmgrd; has a check to see if the upstream node has unexpectedly
changed, e.g. if the repmgrd service is paused and the PostgreSQL
instance has been pointed to another node.
</para>
<para>
However this check was relying on the node record on the local node
being up-to-date, which may not be the case immediately after a
failover, when the node is still replaying records updated prior
to the node's own record being updated. In this case it will
mistakenly assume the node is following the original primary
and attempt to restart monitoring, which will fail as the original
primary is no longer available.
</para>
<para>
To prevent this, the node's record on the upstream node is checked
to see if the reported upstream <literal>node_id</literal> matches
the expected <literal>node_id</literal>. GitHub #587/#588.
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
</sect1>
<sect1 id="release-4.4"> <sect1 id="release-4.4">
<title>Release 4.4</title> <title>Release 4.4</title>
<para><emphasis>Thu 27 June, 2019</emphasis></para> <para><emphasis>27 June, 2019</emphasis></para>
<para>
&repmgr; 4.4 is a major release.
</para>
<para>
For details on how to upgrade an existing &repmgr; installation, see
documentation section <link linkend="upgrading-major-version">Upgrading a major version release</link>.
</para>
<para>
If &repmgrd; is in use, a PostgreSQL restart <emphasis>is</emphasis> required;
in that case we suggest combining this &repmgr; upgrade with the next PostgreSQL
minor release, which will require a PostgreSQL restart in any case.
</para>
<important>
<para>
On Debian-based systems, including Ubuntu, if using &repmgrd;
please ensure that in the file <filename>/etc/init.d/repmgrd</filename>, the parameter
<varname>REPMGRD_OPTS</varname> contains &quot;<literal>--daemonize=false</literal>&quot;, e.g.:
<programlisting>
# additional options
REPMGRD_OPTS="--daemonize=false"</programlisting>
</para>
<para>
For further details, see <link linkend="repmgrd-configuration-debian-ubuntu">repmgrd configuration on Debian/Ubuntu</link>.
</para>
</important>
<sect2> <sect2>
<title>repmgr client enhancements</title> <title>repmgr client enhancements</title>
@@ -969,7 +112,7 @@ REPMGRD_OPTS="--daemonize=false"</programlisting>
<listitem> <listitem>
<para> <para>
<link linkend="repmgr-service-status"><command>repmgr daemon status</command></link>: <link linkend="repmgr-daemon-status"><command>repmgr daemon status</command></link>:
make output similar to that of make output similar to that of
<link linkend="repmgr-cluster-show"><command>repmgr cluster show</command></link> <link linkend="repmgr-cluster-show"><command>repmgr cluster show</command></link>
for consistency and to make it easier to identify nodes not in the expected for consistency and to make it easier to identify nodes not in the expected
@@ -987,7 +130,7 @@ REPMGRD_OPTS="--daemonize=false"</programlisting>
<listitem> <listitem>
<para> <para>
<link linkend="repmgr-cluster-show"><command>repmgr cluster show</command></link> <link linkend="repmgr-cluster-show"><command>repmgr cluster show</command></link>
and <link linkend="repmgr-service-status"><command>repmgr daemon status</command></link>: and <link linkend="repmgr-daemon-status"><command>repmgr daemon status</command></link>:
show the upstream node name as reported by each individual node - this helps visualise show the upstream node name as reported by each individual node - this helps visualise
situations where the cluster is in an unexpected state, and provide a better idea of the situations where the cluster is in an unexpected state, and provide a better idea of the
actual cluster state. actual cluster state.
@@ -1005,7 +148,7 @@ REPMGRD_OPTS="--daemonize=false"</programlisting>
<listitem> <listitem>
<para> <para>
<link linkend="repmgr-cluster-show"><command>repmgr cluster show</command></link> <link linkend="repmgr-cluster-show"><command>repmgr cluster show</command></link>
and <link linkend="repmgr-service-status"><command>repmgr daemon status</command></link>: and <link linkend="repmgr-daemon-status"><command>repmgr daemon status</command></link>:
check if a node is attached to its advertised upstream node, and issue a check if a node is attached to its advertised upstream node, and issue a
warning if the node is not attached. warning if the node is not attached.
</para> </para>
@@ -1153,7 +296,7 @@ REPMGRD_OPTS="--daemonize=false"</programlisting>
&repmgr; 4.3 is a major release. &repmgr; 4.3 is a major release.
</para> </para>
<para> <para>
For details on how to upgrade an existing &repmgr; installation, see For details on how to upgrade an existing &repmgr; instrallation, see
documentation section <link linkend="upgrading-major-version">Upgrading a major version release</link>. documentation section <link linkend="upgrading-major-version">Upgrading a major version release</link>.
</para> </para>
<para> <para>
@@ -1222,7 +365,7 @@ REPMGRD_OPTS="--daemonize=false"</programlisting>
<listitem> <listitem>
<para> <para>
<link linkend="repmgr-service-status"><command>repmgr daemon status</command></link> <link linkend="repmgr-daemon-status"><command>repmgr daemon status</command></link>
additionally displays the node priority and the interval (in seconds) since the additionally displays the node priority and the interval (in seconds) since the
&repmgrd; instance last verified its upstream node was available. &repmgrd; instance last verified its upstream node was available.
</para> </para>
@@ -1309,7 +452,7 @@ REPMGRD_OPTS="--daemonize=false"</programlisting>
</para> </para>
<para> <para>
Possible values are <literal>ping</literal> (default; uses <command>PQping()</command> to Possible values are <literal>ping</literal> (default; uses <command>PQping()</command> to
determine server availability), <literal>connection</literal> (attempts to make a new connection to determine server availability), <literal>connection</literal> (attempst to make a new connection to
the upstream node), and <literal>query</literal> (determines server availability the upstream node), and <literal>query</literal> (determines server availability
by executing an SQL statement on the node via the existing connection). by executing an SQL statement on the node via the existing connection).
</para> </para>

View File

@@ -20,7 +20,7 @@
A mailing list/forum is provided via Google groups to discuss contributions or issues: <ulink url="https://groups.google.com/group/repmgr">https://groups.google.com/group/repmgr</ulink>. A mailing list/forum is provided via Google groups to discuss contributions or issues: <ulink url="https://groups.google.com/group/repmgr">https://groups.google.com/group/repmgr</ulink>.
</para> </para>
<para> <para>
Please report bugs and other issues to: <ulink url="https://github.com/EnterpriseDB/repmgr">https://github.com/EnterpriseDB/repmgr</ulink>. Please report bugs and other issues to: <ulink url="https://github.com/2ndQuadrant/repmgr">https://github.com/2ndQuadrant/repmgr</ulink>.
</para> </para>
<important> <important>
@@ -43,12 +43,6 @@
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
PostgreSQL version
</simpara>
</listitem>
<listitem> <listitem>
<simpara> <simpara>
&repmgr; version &repmgr; version
@@ -64,7 +58,7 @@
<listitem> <listitem>
<simpara> <simpara>
<filename>repmgr.conf</filename> files (suitably anonymized if necessary) <filename>repmpgr.conf</filename> files (suitably anonymized if necessary)
</simpara> </simpara>
</listitem> </listitem>
@@ -74,18 +68,9 @@
</simpara> </simpara>
</listitem> </listitem>
<listitem> <listitem>
<simpara> <simpara>
PostgreSQL 11 and earlier: contents of the <filename>recovery.conf</filename> file PostgreSQL version
(suitably anonymized if necessary).
</simpara>
</listitem>
<listitem>
<simpara>
PostgreSQL 12 and later: contents of the <filename>postgresql.auto.conf</filename> file
(suitably anonymized if necessary), and whether or not the PostgreSQL data directory
contains the files <filename>standby.signal</filename> and/or <filename>recovery.signal</filename>.
</simpara> </simpara>
</listitem> </listitem>
@@ -105,8 +90,8 @@
</para> </para>
<para> <para>
In all cases it is <emphasis>extremely</emphasis> useful to receive In all cases it is <emphasis>extremely</emphasis> useful to receive
as much detail as possible on how to reliably reproduce information on how to reliably reproduce an issue with as much detail as
an issue. possible.
</para> </para>
</sect1> </sect1>

8
doc/bdr-failover.md Normal file
View File

@@ -0,0 +1,8 @@
BDR failover with repmgrd
=========================
This document has been integrated into the main `repmgr` documentation
and is now located here:
> [BDR failover with repmgrd](https://repmgr.org/docs/current/repmgrd-bdr.html)

View File

@@ -46,32 +46,12 @@
<para> <para>
WAL management on the primary becomes much easier as there's no need WAL management on the primary becomes much easier as there's no need
to use replication slots, and <varname>wal_keep_segments</varname> to use replication slots, and <varname>wal_keep_segments</varname>
(PostgreSQL 13 and later: <varname>wal_keep_size</varname>)
does not need to be set. does not need to be set.
</para> </para>
</listitem> </listitem>
</itemizedlist> </itemizedlist>
</para> </para>
<note>
<para>
Currently &repmgr;'s support for cloning from Barman is implemented by using
<productname>rsync</productname> to clone from the Barman server.
</para>
<para>
It is therefore not able to make use of Barman's parallel restore facility, which
is executed on the Barman server and clones to the target server.
</para>
<para>
Barman's parallel restore facility can be used by executing it manually on
the Barman server and configuring replication on the resulting cloned
standby using
<command><link linkend="repmgr-standby-clone">repmgr standby clone --replication-conf-only</link></command>.
</para>
</note>
<sect2 id="cloning-from-barman-prerequisites"> <sect2 id="cloning-from-barman-prerequisites">
<title>Prerequisites for cloning from Barman</title> <title>Prerequisites for cloning from Barman</title>
<para> <para>
@@ -80,7 +60,8 @@
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">
<listitem> <listitem>
<para> <para>
the Barman catalogue must include at least one valid backup for this server; the <varname>barman_server</varname> setting in <filename>repmgr.conf</filename> is the same as the
server configured in Barman;
</para> </para>
</listitem> </listitem>
<listitem> <listitem>
@@ -91,90 +72,19 @@
</listitem> </listitem>
<listitem> <listitem>
<para> <para>
the <varname>barman_server</varname> setting in <filename>repmgr.conf</filename> is the same as the the <varname>restore_command</varname> setting in <filename>repmgr.conf</filename> is configured to
server configured in Barman. use a copy of the <command>barman-wal-restore</command> script shipped with the
<literal>barman-cli</literal> package (see section <xref linkend="cloning-from-barman-restore-command"/>
below).
</para>
</listitem>
<listitem>
<para>
the Barman catalogue includes at least one valid backup for this server.
</para> </para>
</listitem> </listitem>
</itemizedlist> </itemizedlist>
</para> </para>
<para>
For example, assuming Barman is located on the host &quot;<literal>barmansrv</literal>&quot;
under the &quot;<literal>barman</literal>&quot; user account,
<filename>repmgr.conf</filename> should contain the following entries:
<programlisting>
barman_host='barman@barmansrv'
barman_server='pg'</programlisting>
</para>
<para>
Here <literal>pg</literal> corresponds to a section in Barman's configuration file for a specific
server backup configuration, which would look something like:
<programlisting>
[pg]
description = "Main cluster"
...
</programlisting>
</para>
<para>
More details on Barman configuration can be found in the
<ulink url="https://docs.pgbarman.org/">Barman documentation</ulink>'s
<ulink url="https://docs.pgbarman.org/#configuration">configuration section</ulink>.
</para>
<note>
<para>
To use a non-default Barman configuration file on the Barman server,
specify this in <filename>repmgr.conf</filename> with <filename>barman_config</filename>:
<programlisting>
barman_config='/path/to/barman.conf'</programlisting>
</para>
</note>
<para>
We also recommend configuring the <varname>restore_command</varname> setting in <filename>repmgr.conf</filename>
to use the <command>barman-wal-restore</command> script
(see section <xref linkend="cloning-from-barman-restore-command"/> below).
</para>
<tip>
<simpara>
If you have a non-default SSH configuration on the Barman
server, e.g. using a port other than 22, then you can set those
parameters in a dedicated Host section in <filename>~/.ssh/config</filename>
corresponding to the value of <varname>barman_host</varname> in
<filename>repmgr.conf</filename>. See the <literal>Host</literal>
section in <command>man 5 ssh_config</command> for more details.
</simpara>
</tip>
<para>
If you wish to place WAL files in a location outside the main
PostgreSQL data directory, set <option>--waldir</option>
(PostgreSQL 9.6 and earlier: <option>--xlogdir</option>) in
<option>pg_basebackup_options</option> to the target directory
(must be an absolute filepath). &repmgr; will create and
symlink to this directory in exactly the same way
<application>pg_basebackup</application> would.
</para>
<para>
It's now possible to clone a standby from Barman, e.g.:
<programlisting>
$ repmgr -f /etc/repmgr.conf -h node1 -U repmgr -d repmgr standby clone
NOTICE: destination directory "/var/lib/postgresql/data" provided
INFO: connecting to Barman server to verify backup for "test_cluster"
INFO: checking and correcting permissions on existing directory "/var/lib/postgresql/data"
INFO: creating directory "/var/lib/postgresql/data/repmgr"...
INFO: connecting to Barman server to fetch server parameters
INFO: connecting to source node
DETAIL: current installation size is 30 MB
NOTICE: retrieving backup from Barman...
(...)
NOTICE: standby clone (from Barman) complete
NOTICE: you can now start your PostgreSQL server
HINT: for example: pg_ctl -D /var/lib/postgresql/data start</programlisting>
</para>
<note> <note>
<simpara> <simpara>
Barman support is automatically enabled if <varname>barman_server</varname> Barman support is automatically enabled if <varname>barman_server</varname>
@@ -184,7 +94,37 @@ description = "Main cluster"
command line option. command line option.
</simpara> </simpara>
</note> </note>
<tip>
<simpara>
If you have a non-default SSH configuration on the Barman
server, e.g. using a port other than 22, then you can set those
parameters in a dedicated Host section in <filename>~/.ssh/config</filename>
corresponding to the value of<varname>barman_host</varname> in
<filename>repmgr.conf</filename>. See the <literal>Host</literal>
section in <command>man 5 ssh_config</command> for more details.
</simpara>
</tip>
<para>
It's now possible to clone a standby from Barman, e.g.:
<programlisting>
NOTICE: using configuration file "/etc/repmgr.conf"
NOTICE: destination directory "/var/lib/postgresql/data" provided
INFO: connecting to Barman server to verify backup for test_cluster
INFO: checking and correcting permissions on existing directory "/var/lib/postgresql/data"
INFO: creating directory "/var/lib/postgresql/data/repmgr"...
INFO: connecting to Barman server to fetch server parameters
INFO: connecting to upstream node
INFO: connected to source node, checking its state
INFO: successfully connected to source node
DETAIL: current installation size is 29 MB
NOTICE: retrieving backup from Barman...
receiving file list ...
(...)
NOTICE: standby clone (from Barman) complete
NOTICE: you can now start your PostgreSQL server
HINT: for example: pg_ctl -D /var/lib/postgresql/data start</programlisting>
</para>
</sect2> </sect2>
<sect2 id="cloning-from-barman-restore-command" xreflabel="Using Barman as a WAL file source"> <sect2 id="cloning-from-barman-restore-command" xreflabel="Using Barman as a WAL file source">
<title>Using Barman as a WAL file source</title> <title>Using Barman as a WAL file source</title>
@@ -202,28 +142,35 @@ description = "Main cluster"
</para> </para>
<para> <para>
<command>barman-wal-restore</command> is a Python script provided as part of the <literal>barman-cli</literal> <command>barman-wal-restore</command> is a Python script provided as part of the <literal>barman-cli</literal>
package (Barman 2.0 ~ 2.7) or as part of the core Barman distribution (Barman 2.8 and later). package (Barman 2.0 and later; for Barman 1.x the script is provided separately as
<command>barman-wal-restore.py</command>) which performs this function for Barman.
</para> </para>
<para> <para>
To use <command>barman-wal-restore</command> with &repmgr;, To use <command>barman-wal-restore</command> with &repmgr;
assuming Barman is located on the host &quot;<literal>barmansrv</literal>&quot; and assuming Barman is located on the <literal>barmansrv</literal> host
under the &quot;<literal>barman</literal>&quot; user account,
and that <command>barman-wal-restore</command> is located as an executable at and that <command>barman-wal-restore</command> is located as an executable at
<filename>/usr/bin/barman-wal-restore</filename>, <filename>/usr/bin/barman-wal-restore</filename>,
<filename>repmgr.conf</filename> should include the following lines: <filename>repmgr.conf</filename> should include the following lines:
<programlisting> <programlisting>
barman_host='barman@barmansrv' barman_host=barmansrv
barman_server='pg' barman_server=somedb
restore_command='/usr/bin/barman-wal-restore barmansrv pg %f %p'</programlisting> restore_command=/usr/bin/barman-wal-restore barmansrv somedb %f %p</programlisting>
</para> </para>
<note> <note>
<simpara> <simpara>
<command>barman-wal-restore</command> supports command line switches to <command>barman-wal-restore</command> supports command line switches to
control parallelism (<literal>--parallel=N</literal>) and compression control parallelism (<literal>--parallel=N</literal>) and compression (
(<literal>--bzip2</literal>, <literal>--gzip</literal>). <literal>--bzip2</literal>, <literal>--gzip</literal>).
</simpara> </simpara>
</note> </note>
<note>
<para>
To use a non-default Barman configuration file on the Barman server,
specify this in <filename>repmgr.conf</filename> with <filename>barman_config</filename>:
<programlisting>
barman_config=/path/to/barman.conf</programlisting>
</para>
</note>
</sect2> </sect2>
</sect1> </sect1>
@@ -244,8 +191,7 @@ description = "Main cluster"
that any standby connected to the primary using a replication slot will always that any standby connected to the primary using a replication slot will always
be able to retrieve the required WAL files. This removes the need to manually be able to retrieve the required WAL files. This removes the need to manually
manage WAL file retention by estimating the number of WAL files that need to manage WAL file retention by estimating the number of WAL files that need to
be maintained on the primary using <varname>wal_keep_segments</varname> be maintained on the primary using <varname>wal_keep_segments</varname>.
(PostgreSQL 13 and later: <varname>wal_keep_size</varname>).
Do however be aware that if a standby is disconnected, WAL will continue to Do however be aware that if a standby is disconnected, WAL will continue to
accumulate on the primary until either the standby reconnects or the replication accumulate on the primary until either the standby reconnects or the replication
slot is dropped. slot is dropped.
@@ -319,7 +265,7 @@ description = "Main cluster"
Cascading replication, introduced with PostgreSQL 9.2, enables a standby server Cascading replication, introduced with PostgreSQL 9.2, enables a standby server
to replicate from another standby server rather than directly from the primary, to replicate from another standby server rather than directly from the primary,
meaning replication changes "cascade" down through a hierarchy of servers. This meaning replication changes "cascade" down through a hierarchy of servers. This
can be used to reduce load on the primary and minimize bandwidth usage between can be used to reduce load on the primary and minimize bandwith usage between
sites. For more details, see the sites. For more details, see the
<ulink url="https://www.postgresql.org/docs/current/warm-standby.html#CASCADING-REPLICATION"> <ulink url="https://www.postgresql.org/docs/current/warm-standby.html#CASCADING-REPLICATION">
PostgreSQL cascading replication documentation</ulink>. PostgreSQL cascading replication documentation</ulink>.
@@ -391,7 +337,7 @@ description = "Main cluster"
cluster, you may wish to clone a downstream standby whose upstream node cluster, you may wish to clone a downstream standby whose upstream node
does not yet exist. In this case you can clone from the primary (or does not yet exist. In this case you can clone from the primary (or
another upstream node); provide the parameter <literal>--upstream-conninfo</literal> another upstream node); provide the parameter <literal>--upstream-conninfo</literal>
to explicitly set the upstream's <varname>primary_conninfo</varname> string to explictly set the upstream's <varname>primary_conninfo</varname> string
in <filename>recovery.conf</filename>. in <filename>recovery.conf</filename>.
</simpara> </simpara>
</tip> </tip>
@@ -449,13 +395,6 @@ description = "Main cluster"
WAL directory. Any WALs generated during the cloning process will be copied here, and WAL directory. Any WALs generated during the cloning process will be copied here, and
a symlink will automatically be created from the main data directory. a symlink will automatically be created from the main data directory.
</para> </para>
<tip>
<para>
The <literal>--waldir</literal> (<literal>--xlogdir</literal>) option,
if present in <varname>pg_basebackup_options</varname>, will be honoured by &repmgr;
when cloning from Barman (&repmgr; 5.2 and later).
</para>
</tip>
<para> <para>
See the <ulink url="https://www.postgresql.org/docs/current/app-pgbasebackup.html">PostgreSQL pg_basebackup documentation</ulink> See the <ulink url="https://www.postgresql.org/docs/current/app-pgbasebackup.html">PostgreSQL pg_basebackup documentation</ulink>
for more details of available options. for more details of available options.
@@ -476,8 +415,10 @@ description = "Main cluster"
<para> <para>
The recommended way to do this is to store the password in the <literal>postgres</literal> system The recommended way to do this is to store the password in the <literal>postgres</literal> system
user's <filename>~/.pgpass</filename> file. For more information on using the password file, see user's <filename>~/.pgpass</filename> file. It's also possible to store the password in the
the documentation section <xref linkend="configuration-password-file"/>. environment variable <varname>PGPASSWORD</varname>, however this is not recommended for
security reasons. For more details see the
<ulink url="https://www.postgresql.org/docs/current/libpq-pgpass.html">PostgreSQL password file documentation</ulink>.
</para> </para>
<note> <note>
@@ -499,6 +440,19 @@ description = "Main cluster"
will need to be set during any action which causes <filename>recovery.conf</filename> to be will need to be set during any action which causes <filename>recovery.conf</filename> to be
rewritten, e.g. <xref linkend="repmgr-standby-follow"/>. rewritten, e.g. <xref linkend="repmgr-standby-follow"/>.
</para> </para>
<para>
It is of course also possible to include the password value in the <varname>conninfo</varname>
string for each node, but this is obviously a security risk and should be avoided.
</para>
<para>
From PostgreSQL 9.6, <application>libpq</application> supports the <varname>passfile</varname>
parameter in connection strings, which can be used to specify a password file other than
the default <filename>~/.pgpass</filename>.
</para>
<para>
To have &repmgr; write a custom password file in <varname>primary_conninfo</varname>,
specify its location in <varname>passfile</varname> in <filename>repmgr.conf</filename>.
</para>
</sect2> </sect2>
<sect2 id="cloning-advanced-replication-user" xreflabel="Separate replication user"> <sect2 id="cloning-advanced-replication-user" xreflabel="Separate replication user">
@@ -514,34 +468,6 @@ description = "Main cluster"
cloning a node or executing <xref linkend="repmgr-standby-follow"/>. cloning a node or executing <xref linkend="repmgr-standby-follow"/>.
</para> </para>
</sect2> </sect2>
<sect2 id="cloning-advanced-tablespace-mapping" xreflabel="Tablespace mapping">
<title>Tablespace mapping</title>
<indexterm>
<primary>tablespace mapping</primary>
</indexterm>
<para>
&repmgr; provides a <option>tablespace_mapping</option> configuration
file option, which will makes it possible to map the tablespace on the source node to
a different location on the local node.
</para>
<para>
To use this, add <option>tablespace_mapping</option> to <filename>repmgr.conf</filename>
like this:
<programlisting>
tablespace_mapping='/var/lib/pgsql/tblspc1=/data/pgsql/tblspc1'
</programlisting>
</para>
<para>
where the left-hand value represents the tablespace on the source node,
and the right-hand value represents the tablespace on the standby to be cloned.
</para>
<para>
This parameter can be provided multiple times.
</para>
</sect2>
</sect1> </sect1>

View File

@@ -7,14 +7,6 @@
<secondary>optional settings</secondary> <secondary>optional settings</secondary>
</indexterm> </indexterm>
<note>
<simpara>
This section documents a subset of optional configuration settings; for a full
for a full and annotated view of all configuration options see the
see the <ulink url="https://raw.githubusercontent.com/EnterpriseDB/repmgr/master/repmgr.conf.sample">sample repmgr.conf file</ulink>
</simpara>
</note>
<variablelist> <variablelist>
@@ -74,8 +66,17 @@
</term> </term>
<listitem> <listitem>
<para> <para>
Must be <literal>physical</literal> (the default). Must be one of <literal>physical</literal> (for standard streaming replication)
or <literal>bdr</literal>.
</para> </para>
<note>
<para>
Replication type <literal>bdr</literal> can only be used with BDR 2.x
</para>
<para>
BDR 3.x users should use <literal>physical</literal>.
</para>
</note>
</listitem> </listitem>
</varlistentry> </varlistentry>
@@ -118,72 +119,6 @@
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry id="repmgr-conf-ssh-options" xreflabel="ssh_options">
<term><varname>ssh_options</varname> (<type>string</type>)
<indexterm>
<primary><varname>ssh_options</varname> configuration file parameter</primary>
</indexterm>
</term>
<listitem>
<para>
Options to append to the <command>ssh</command> command when executed
by &repmgr;.
</para>
<para>
We recommend adding <literal>-q</literal> to suppress any superfluous
SSH chatter such as login banners, and also an explicit
<option>ConnectTimeout</option> value,
e.g.:
<programlisting>
ssh_options='-q -o ConnectTimeout=10'</programlisting>
</para>
</listitem>
</varlistentry>
<varlistentry id="repmgr-conf-pg-bindir" xreflabel="pg_bindir">
<term><varname>pg_bindir</varname> (<type>string</type>)
<indexterm>
<primary><varname>pg_bindir</varname> configuration file parameter</primary>
</indexterm>
</term>
<listitem>
<para>
Path to the PostgreSQL binary directory (location of <application>pg_ctl</application>,
<application>pg_basebackup</application> etc.). Only required
if these are not in the system <varname>PATH</varname>.
</para>
<tip>
<para>
When &repmgr; is executed via <application>SSH</application> (e.g. when running
<command><link linkend="repmgr-standby-switchover">repmgr standby switchover</link></command>,
<command><link linkend="repmgr-cluster-matrix">repmgr cluster matrix</link></command> or
<command><link linkend="repmgr-cluster-crosscheck">repmgr cluster crosscheck</link></command>,
or if it is executed as cronjob), a login shell will not be used and only the
default system <varname>PATH</varname> will be set. Therefore it's recommended to set
<varname>pg_bindir</varname> so &repmgr; can correctly invoke binaries on a remote
system and avoid potential path issues.
</para>
</tip>
<para>
Debian/Ubuntu users: you will probably need to set this to the directory where
<application>pg_ctl</application> is located, e.g. <filename>/usr/lib/postgresql/9.6/bin/</filename>.
</para>
<para>
<emphasis>NOTE</emphasis>: <varname>pg_bindir</varname> is only used when &repmgr; directly
executes PostgreSQL binaries; any user-defined scripts
<emphasis>must</emphasis> be specified with the full path.
</para>
</listitem>
</varlistentry>
</variablelist> </variablelist>
<tip>
<simpara>
See the <ulink url="https://raw.githubusercontent.com/EnterpriseDB/repmgr/master/repmgr.conf.sample">sample repmgr.conf file</ulink>
for a full and annotated view of all configuration options.
</simpara>
</tip>
</sect1> </sect1>

View File

@@ -96,9 +96,6 @@
</variablelist> </variablelist>
</para> </para>
<para>
See <xref linkend="configuration-file-optional-settings"/> for further configuration options.
</para>
</sect1> </sect1>

View File

@@ -27,9 +27,7 @@
<note> <note>
<para> <para>
If using <application>systemd</application>, ensure you have <varname>RemoveIPC</varname> set to <literal>off</literal>. If using <application>systemd</application>, ensure you have <varname>RemoveIPC</varname> set to <literal>off</literal>.
See the <ulink url="https://www.postgresql.org/docs/current/index.html">PostgreSQL documentation</ulink> section See the <ulink url="https://wiki.postgresql.org/wiki/Systemd">systemd</ulink>
<ulink url="https://www.postgresql.org/docs/current/kernel-resources.html#SYSTEMD-REMOVEIPC">systemd RemoveIPC</ulink>
and also the <ulink url="https://wiki.postgresql.org/wiki/Systemd">systemd</ulink>
entry in the <ulink url="https://wiki.postgresql.org/wiki/Main_Page">PostgreSQL wiki</ulink> for details. entry in the <ulink url="https://wiki.postgresql.org/wiki/Main_Page">PostgreSQL wiki</ulink> for details.
</para> </para>
</note> </note>

View File

@@ -31,8 +31,6 @@
<secondary>format</secondary> <secondary>format</secondary>
</indexterm> </indexterm>
<para> <para>
<filename>repmgr.conf</filename> is a plain text file with one parameter/value <filename>repmgr.conf</filename> is a plain text file with one parameter/value
combination per line. combination per line.
@@ -41,10 +39,14 @@
Whitespace is insignificant (except within a quoted parameter value) and blank lines are ignored. Whitespace is insignificant (except within a quoted parameter value) and blank lines are ignored.
Hash marks (<literal>#</literal>) designate the remainder of the line as a comment. Hash marks (<literal>#</literal>) designate the remainder of the line as a comment.
Parameter values that are not simple identifiers or numbers should be single-quoted. Parameter values that are not simple identifiers or numbers should be single-quoted.
Note that single quote cannot be embedded in a parameter value.
</para> </para>
<para> <important>
To embed a single quote in a parameter value, write either two quotes (preferred) or backslash-quote. <para>
</para> &repmgr; will interpret double-quotes as being part of a string value; only use single quotes
to quote parameter values.
</para>
</important>
<para> <para>
Example of a valid <filename>repmgr.conf</filename> file: Example of a valid <filename>repmgr.conf</filename> file:
@@ -54,77 +56,9 @@
node_id=1 node_id=1
node_name= node1 node_name= node1
conninfo ='host=node1 dbname=repmgr user=repmgr connect_timeout=2' conninfo ='host=node1 dbname=repmgr user=repmgr connect_timeout=2'
data_directory = '/var/lib/pgsql/12/data'</programlisting> data_directory = /var/lib/pgsql/11/data</programlisting>
</para> </para>
<note>
<para>
Beginning with <link linkend="release-5.0">repmgr 5.0</link>, configuration
file parsing has been tightened up and now matches the way PostgreSQL
itself parses configuration files.
</para>
<para>
This means <filename>repmgr.conf</filename> files used with earlier &repmgr;
versions may need slight modification before they can be used with &repmgr; 5
and later.
</para>
<para>
The main change is that &repmgr; requires most string values to be
enclosed in single quotes. For example, this was previously valid:
<programlisting>
conninfo=host=node1 user=repmgr dbname=repmgr connect_timeout=2</programlisting>
but must now be changed to:
<programlisting>
conninfo='host=node1 user=repmgr dbname=repmgr connect_timeout=2'</programlisting>
</para>
</note>
<sect3 id="configuration-file-include-directives" xreflabel="configuration file include directives">
<title>Configuration file include directives</title>
<indexterm>
<primary>repmgr.conf</primary>
<secondary>include directives</secondary>
</indexterm>
<para>
From &repmgr; 5.2, the configuration file can contain the following include directives:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
<option>include</option>: include the specified file,
either as an absolute path or path relative to the current file
</simpara>
</listitem>
<listitem>
<simpara>
<option>include_if_exists</option>: include the specified file.
The file is specified as an absolute path or path relative to the current file.
However, if it does not exist, an error will not be raised.
</simpara>
</listitem>
<listitem>
<simpara>
<option>include_dir</option>: include files in the specified directory
which have the <filename>.conf</filename> suffix.
The directory is specified either as an absolute path or path
relative to the current file
</simpara>
</listitem>
</itemizedlist>
</para>
<para>
These behave in exactly the same way as the PostgreSQL configuration file processing;
see the <ulink url="https://www.postgresql.org/docs/current/config-setting.html#CONFIG-INCLUDES">PostgreSQL documentation</ulink>
for additional details.
</para>
</sect3>
</sect2> </sect2>
@@ -227,14 +161,6 @@ conninfo='host=node1 user=repmgr dbname=repmgr connect_timeout=2'</programlistin
</itemizedlist> </itemizedlist>
</para> </para>
<para>
In examples provided in this documentation, it is assumed the configuration file is located
at <filename>/etc/repmgr.conf</filename>. If &repmgr; is installed from a package, the
configuration file will probably be located at another location specified by the packager;
see appendix <xref linkend="appendix-packages"/> for configuration file locations in
different packaging systems.
</para>
<para> <para>
Note that if a file is explicitly specified with <literal>-f/--config-file</literal>, Note that if a file is explicitly specified with <literal>-f/--config-file</literal>,
an error will be raised if it is not found or not readable, and no attempt will be made to an error will be raised if it is not found or not readable, and no attempt will be made to
@@ -255,61 +181,6 @@ conninfo='host=node1 user=repmgr dbname=repmgr connect_timeout=2'</programlistin
<filename>/path/to/repmgr.conf</filename>). <filename>/path/to/repmgr.conf</filename>).
</para> </para>
</note> </note>
</sect2>
<sect2 id="configuration-file-postgresql-major-upgrades" xreflabel="configuration file and PostgreSQL major version upgrades">
<title>Configuration file and PostgreSQL major version upgrades</title>
<indexterm>
<primary>repmgr.conf</primary>
<secondary>ostgreSQL major version upgrades</secondary>
</indexterm>
<para>
When upgrading the PostgreSQL cluster to a new major version, <filename>repmgr.conf</filename>
will probably needed to be updated.
</para>
<para>
Usually <option>pg_bindir</option> and <option>data_directory</option> will need to be modified,
particularly if the default package locations are used, as these usually change.
</para>
<para>
It's also possible the location of <filename>repmgr.conf</filename> itself will change
(e.g. from <filename>/etc/repmgr/11/repmgr.conf</filename> to <filename>/etc/repmgr/12/repmgr.conf</filename>).
This is stored as part of the &repmgr; metadata and is used by &repmgr; to execute &repmgr; remotely
(e.g. during a <link linkend="performing-switchover">switchover operation</link>).
</para>
<para>
If the content and/or location of <filename>repmgr.conf</filename> has changed, the &repmgr; metadata
needs to be updated to reflect this. The &repmgr; metadata can be updated on each node with:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
<link linkend="repmgr-primary-register">
<command>repmgr primary register --force -f /path/to/repmgr.conf</command>
</link>
</simpara>
</listitem>
<listitem>
<simpara>
<link linkend="repmgr-standby-register">
<command>repmgr standby register --force -f /path/to/repmgr.conf</command>
</link>
</simpara>
</listitem>
<listitem>
<simpara>
<link linkend="repmgr-witness-register">
<command>repmgr witness register --force -f /path/to/repmgr.conf -h primary_host</command>
</link>
</simpara>
</listitem>
</itemizedlist>
</para>
</sect2> </sect2>
</sect1> </sect1>

View File

@@ -1,175 +0,0 @@
<sect1 id="configuration-password-management" xreflabel="password management">
<title>Password Management</title>
<indexterm>
<primary>passwords</primary>
</indexterm>
<sect2 id="configuration-password-management-options" xreflabel="password management options">
<title>Password Management Options</title>
<indexterm>
<primary>passwords</primary>
<secondary>options for managing</secondary>
</indexterm>
<para>
For security purposes it's desirable to protect database access using a password.
</para>
<para>
PostgreSQL has three ways of providing a password:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
including the password in the <option>conninfo</option> string
(e.g. &quot;<literal>host=node1 dbname=repmgr user=repmgr password=foo</literal>&quot;)
</simpara>
</listitem>
<listitem>
<simpara>
exporting the password as an environment variable (<envar>PGPASSWORD</envar>)
</simpara>
</listitem>
<listitem>
<simpara>
storing the password in a dedicated password file
</simpara>
</listitem>
</itemizedlist>
</para>
<para>
We strongly advise against including the password in the <option>conninfo</option> string, as
this will result in the database password being exposed in various places, including in the
<filename>repmgr.conf</filename> file, the <literal>repmgr.nodes</literal> table, any output
generated by &repmgr; which lists the node <option>conninfo</option> strings (e.g.
<link linkend="repmgr-cluster-show">repmgr cluster show</link>) and in the &repmgr; log file,
particularly at <option>log_level=DEBUG</option>.
</para>
<note>
<para>
Currently &repmgr; does not fully support use of the <option>password</option> option in the
<option>conninfo</option> string.
</para>
</note>
<para>
Exporting the password as an environment variable (<envar>PGPASSWORD</envar>) is considered
less insecure, but the PostgreSQL documentation explicitly recommends against doing this:
<blockquote>
<attribution><ulink url="https://www.postgresql.org/docs/current/libpq-envars.html">Environment Variables</ulink></attribution>
<para>
<envar>PGPASSWORD</envar> behaves the same as the <option>password</option>
connection parameter. Use of this environment variable
is not recommended for security reasons, as some operating systems
allow non-root users to see process environment variables via
<application>ps</application>; instead consider using a password file.
</para>
</blockquote>
</para>
<para>
The most secure option for managing passwords is to use a dedicated password file; see the following
section for more details.
</para>
</sect2>
<sect2 id="configuration-password-file" xreflabel="password file">
<title>Using a password file</title>
<indexterm>
<primary>pgpass</primary>
</indexterm>
<indexterm>
<primary>.pgpass</primary>
</indexterm>
<indexterm>
<primary>passwords</primary>
<secondary>using a password file</secondary>
</indexterm>
<para>
The most secure way of storing passwords is in a password file,
which by default is <filename>~/.pgpass</filename>. This file
can only be read by the system user who owns the file, and
PostgreSQL will refuse to use the file unless read/write
permissions are restricted to the file owner. The password(s)
contained in the file will not be directly accessed by
&repmgr; (or any other libpq-based client software such as <application>psql</application>).
</para>
<para>
For full details see the
<ulink url="https://www.postgresql.org/docs/current/libpq-pgpass.html">PostgreSQL password file documentation</ulink>.
</para>
<para>
For use with &repmgr;, the <filename>~/.pgpass</filename> must two entries for each
node in the replication cluster: one for the &repmgr; user who accesses the &repmgr; metadatabase,
and one for replication connections (regardless of whether a dedicated replication user is used).
The file must be present on each node in the replication cluster.
</para>
<para>
A <filename>~/.pgpass</filename> file for a 3-node cluster where the <literal>repmgr</literal> database user
is used for both for accessing the &repmgr; metadatabase and for replication connections would look like this:
<programlisting>
node1:5432:repmgr:repmgr:foo
node1:5432:replication:repmgr:foo
node2:5432:repmgr:repmgr:foo
node2:5432:replication:repmgr:foo
node3:5432:repmgr:repmgr:foo
node3:5432:replication:repmgr:foo</programlisting>
If a dedicated replication user (here: <literal>repluser</literal>) is in use, the file would look like this:
<programlisting>
node1:5432:repmgr:repmgr:foo
node1:5432:replication:repluser:foo
node2:5432:repmgr:repmgr:foo
node2:5432:replication:repluser:foo
node3:5432:repmgr:repmgr:foo
node3:5432:replication:repluser:foo</programlisting>
If you are planning to use the <option>-S</option>/<option>--superuser</option> option,
there must also be an entry enabling the superuser to connect to the &repmgr; database.
Assuming the superuser is <literal>postgres</literal>, the file would look like this:
<programlisting>
node1:5432:repmgr:repmgr:foo
node1:5432:repmgr:postgres:foo
node1:5432:replication:repluser:foo
node2:5432:repmgr:repmgr:foo
node2:5432:repmgr:postgres:foo
node2:5432:replication:repluser:foo
node3:5432:repmgr:repmgr:foo
node3:5432:repmgr:postgres:foo
node3:5432:replication:repluser:foo</programlisting>
</para>
<para>
The <filename>~/.pgpass</filename> file can be simplified with the use of wildcards if
there is no requirement to restrict provision of passwords to particular hosts, ports
or databases. The preceding file could then be formatted like this:
<programlisting>
*:*:*:repmgr:foo
*:*:*:postgres:foo
</programlisting>
</para>
<note>
<para>
It's possible to specify an alternative location for the <filename>~/.pgpass</filename> file, either via
the environment variable <envar>PGPASSFILE</envar>, or (from PostgreSQL 9.6) using the
<varname>passfile</varname> parameter in connection strings.
</para>
<para>
If using the <varname>passfile</varname> parameter, it's essential to ensure the file is in the same
location on all nodes, as when connecting to a remote node, the file referenced is the one on the
local node.
</para>
<para>
Additionally, you <emphasis>must</emphasis> specify the passfile location in <filename>repmgr.conf</filename>
with the <option>passfile</option> option so &repmgr; can write the correct path when creating the
<option>primary_conninfo</option> parameter for replication configuration on standbys.
</para>
</note>
</sect2>
</sect1>

View File

@@ -1,25 +0,0 @@
<sect1 id="configuration-permissions" xreflabel="Database user permissions">
<title>repmgr database user permissions</title>
<indexterm>
<primary>configuration</primary>
<secondary>database user permissions</secondary>
</indexterm>
<para>
&repmgr; requires that the database defined in the <varname>conninfo</varname>
setting contains the <literal>repmgr</literal> extension. The database user defined in the
<varname>conninfo</varname> setting must be able to access this database and
the database objects contained within the extension.
</para>
<para>
The <literal>repmgr</literal> extension can only be installed by a superuser.
If the &repmgr; user is a superuser, &repmgr; will create the extension automatically.
</para>
<para>
Alternatively, the extension can be created manually by a superuser
(with &quot;<command>CREATE EXTENSION repmgr</command>&quot;) before executing
<link linkend="repmgr-primary-register">repmgr primary register</link>.
</para>
</sect1>

View File

@@ -148,19 +148,9 @@
instances in the replication cluster which may potentially become a primary server or instances in the replication cluster which may potentially become a primary server or
(in cascading replication) the upstream server of a standby. (in cascading replication) the upstream server of a standby.
</para> </para>
<para> <para>
PostgreSQL documentation: <ulink url="https://www.postgresql.org/docs/current/runtime-config-replication.html#GUC-MAX-WAL-SENDERS">max_wal_senders</ulink>. PostgreSQL documentation: <ulink url="https://www.postgresql.org/docs/current/runtime-config-replication.html#GUC-MAX-WAL-SENDERS">max_wal_senders</ulink>.
</para> </para>
<note>
<para>
From <productname>PostgreSQL 12</productname>, <option>max_wal_senders</option>
<emphasis>must</emphasis> be set to the same or a higher value as the primary node
(at the time the node was cloned), otherwise the standby will refuse
to start (unless <option>hot_standby</option> is set to <literal>off</literal>, which
will prevent the node from accepting queries).
</para>
</note>
</listitem> </listitem>
</varlistentry> </varlistentry>
@@ -270,7 +260,7 @@
<varlistentry> <varlistentry>
<term><option>wal_keep_segments</option> / <option>wal_keep_size</option></term> <term><option>wal_keep_segments</option></term>
<listitem> <listitem>
@@ -279,36 +269,25 @@
<secondary>PostgreSQL configuration</secondary> <secondary>PostgreSQL configuration</secondary>
</indexterm> </indexterm>
<indexterm>
<primary>wal_keep_size</primary>
<secondary>PostgreSQL configuration</secondary>
</indexterm>
<para> <para>
Normally there is no need to set <option>wal_keep_segments</option> Normally there is no need to set <option>wal_keep_segments</option> (default: <literal>0</literal>), as it
(PostgreSQL 13 and later: <varname>wal_keep_size</varname>; default: <literal>0</literal>), is <emphasis>not</emphasis> a reliable way of ensuring that all required WAL segments are available to standbys.
as it is <emphasis>not</emphasis> a reliable way of ensuring that all required WAL Replication slots and/or an archiving solution such as Barman are recommended to ensure standbys have a reliable
segments are available to standbys. Replication slots and/or an archiving solution
such as Barman are recommended to ensure standbys have a reliable
source of WAL segments at all times. source of WAL segments at all times.
</para> </para>
<para> <para>
The only reason ever to set <option>wal_keep_segments</option> / <option>wal_keep_size</option> The only reason ever to set <option>wal_keep_segments</option> is you have
is you have you have configured <option>pg_basebackup_options</option> you have configured <option>pg_basebackup_options</option>
in <filename>repmgr.conf</filename> to include the setting <literal>--wal-method=fetch</literal> in <filename>repmgr.conf</filename> to include the setting <literal>--wal-method=fetch</literal>
(PostgreSQL 9.6 and earlier: <literal>--xlog-method=fetch</literal>) (PostgreSQL 9.6 and earlier: <literal>--xlog-method=fetch</literal>)
<emphasis>and</emphasis> you have <emphasis>not</emphasis> set <option>restore_command</option> <emphasis>and</emphasis> you have <emphasis>not</emphasis> set <option>restore_command</option>
in <filename>repmgr.conf</filename> to fetch WAL files from a reliable source such as Barman, in <filename>repmgr.conf</filename> to fetch WAL files from a reliable source such as Barman,
in which case you'll need to set <option>wal_keep_segments</option> in which case you'll need to set <option>wal_keep_segments</option>
to a sufficiently high number to ensure that all WAL files required by the standby to a sufficiently high number to ensure that all WAL files required by the standby
are retained. However we do not recommend WAL retention in this way. are retained. However we do not recommend managing replication in this way.
</para> </para>
<para> <para>
PostgreSQL documentation: <ulink url="https://www.postgresql.org/docs/current/runtime-config-replication.html#GUC-WAL-KEEP-SEGMENTS">wal_keep_segments</ulink>. PostgreSQL documentation: <ulink url="https://www.postgresql.org/docs/current/runtime-config-replication.html#GUC-WAL-KEEP-SEGMENTS">wal_keep_segments</ulink>.
<!--
PostgreSQL documentation: <ulink url="https://www.postgresql.org/docs/current/runtime-config-replication.html#GUC-WAL-KEEP-SIZE">wal_keep_size</ulink>.
-->
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
@@ -329,7 +308,23 @@
&configuration-file-optional-settings; &configuration-file-optional-settings;
&configuration-file-log-settings; &configuration-file-log-settings;
&configuration-file-service-commands; &configuration-file-service-commands;
&configuration-permissions;
&configuration-password-management;
<sect1 id="configuration-permissions" xreflabel="Database user permissions">
<title>repmgr database user permissions</title>
<indexterm>
<primary>configuration</primary>
<secondary>database user permissions</secondary>
</indexterm>
<para>
&repmgr; will create an extension database containing objects
for administering &repmgr; metadata. The user defined in the <varname>conninfo</varname>
setting must be able to access all objects. Additionally, superuser permissions
are required to install the &repmgr; extension. The easiest way to do this
is create the &repmgr; user as a superuser, however if this is not
desirable, the &repmgr; user can be created as a normal user and a
superuser specified with <literal>--superuser</literal> when registering a &repmgr; node.
</para>
</sect1>
</chapter> </chapter>

View File

@@ -95,8 +95,7 @@
</para> </para>
<para> <para>
The following parameters are provided for a subset of event notifications; their meaning may The following parameters are provided for a subset of event notifications:
change according to context:
</para> </para>
<variablelist> <variablelist>
@@ -109,9 +108,6 @@
<para> <para>
node ID of the demoted primary (<xref linkend="repmgr-standby-switchover"/> only) node ID of the demoted primary (<xref linkend="repmgr-standby-switchover"/> only)
</para> </para>
<para>
node ID of the former primary (<literal>repmgrd_failover_promote</literal> only)
</para>
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry> <varlistentry>
@@ -121,6 +117,10 @@
<literal>conninfo</literal> string of the primary node <literal>conninfo</literal> string of the primary node
(<xref linkend="repmgr-standby-register"/> and <xref linkend="repmgr-standby-follow"/>) (<xref linkend="repmgr-standby-register"/> and <xref linkend="repmgr-standby-follow"/>)
</para> </para>
<para>
<literal>conninfo</literal> string of the next available node
(<varname>bdr_failover</varname> and <varname>bdr_recovery</varname>)
</para>
</listitem> </listitem>
</varlistentry> </varlistentry>
@@ -130,6 +130,9 @@
<para> <para>
name of the current primary node (<xref linkend="repmgr-standby-register"/> and <xref linkend="repmgr-standby-follow"/>) name of the current primary node (<xref linkend="repmgr-standby-register"/> and <xref linkend="repmgr-standby-follow"/>)
</para> </para>
<para>
name of the next available node (<varname>bdr_failover</varname> and <varname>bdr_recovery</varname>)
</para>
</listitem> </listitem>
</varlistentry> </varlistentry>
@@ -137,7 +140,7 @@
<para> <para>
The values provided for <literal>%c</literal> and <literal>%a</literal> The values provided for <literal>%c</literal> and <literal>%a</literal>
may contain spaces, so should always be quoted. will probably contain spaces, so should always be quoted.
</para> </para>
<para> <para>
@@ -145,7 +148,7 @@
the notification types can be filtered to explicitly named ones using the the notification types can be filtered to explicitly named ones using the
<varname>event_notifications</varname> parameter, e.g.: <varname>event_notifications</varname> parameter, e.g.:
<programlisting> <programlisting>
event_notifications='primary_register,standby_register,witness_register'</programlisting> event_notifications=primary_register,standby_register,witness_register</programlisting>
</para> </para>
@@ -270,6 +273,28 @@
</itemizedlist> </itemizedlist>
</para> </para>
<para>
Events generated by &repmgrd; (BDR mode):
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara><literal>bdr_failover</literal></simpara>
</listitem>
<listitem>
<simpara><literal>bdr_reconnect</literal></simpara>
</listitem>
<listitem>
<simpara><literal>bdr_recovery</literal></simpara>
</listitem>
<listitem>
<simpara><literal>bdr_register</literal></simpara>
</listitem>
<listitem>
<simpara><literal>bdr_unregister</literal></simpara>
</listitem>
</itemizedlist>
</para>
<para> <para>
Note that under some circumstances (e.g. when no replication cluster primary Note that under some circumstances (e.g. when no replication cluster primary
could be located), it will not be possible to write an entry into the could be located), it will not be possible to write an entry into the

View File

@@ -21,8 +21,6 @@
<!ENTITY configuration-file-optional-settings SYSTEM "configuration-file-optional-settings.xml"> <!ENTITY configuration-file-optional-settings SYSTEM "configuration-file-optional-settings.xml">
<!ENTITY configuration-file-log-settings SYSTEM "configuration-file-log-settings.xml"> <!ENTITY configuration-file-log-settings SYSTEM "configuration-file-log-settings.xml">
<!ENTITY configuration-file-service-commands SYSTEM "configuration-file-service-commands.xml"> <!ENTITY configuration-file-service-commands SYSTEM "configuration-file-service-commands.xml">
<!ENTITY configuration-permissions SYSTEM "configuration-permissions.xml">
<!ENTITY configuration-password-management SYSTEM "configuration-password-management.xml">
<!ENTITY cloning-standbys SYSTEM "cloning-standbys.xml"> <!ENTITY cloning-standbys SYSTEM "cloning-standbys.xml">
<!ENTITY promoting-standby SYSTEM "promoting-standby.xml"> <!ENTITY promoting-standby SYSTEM "promoting-standby.xml">
<!ENTITY follow-new-primary SYSTEM "follow-new-primary.xml"> <!ENTITY follow-new-primary SYSTEM "follow-new-primary.xml">
@@ -35,6 +33,7 @@
<!ENTITY repmgrd-automatic-failover SYSTEM "repmgrd-automatic-failover.xml"> <!ENTITY repmgrd-automatic-failover SYSTEM "repmgrd-automatic-failover.xml">
<!ENTITY repmgrd-configuration SYSTEM "repmgrd-configuration.xml"> <!ENTITY repmgrd-configuration SYSTEM "repmgrd-configuration.xml">
<!ENTITY repmgrd-operation SYSTEM "repmgrd-operation.xml"> <!ENTITY repmgrd-operation SYSTEM "repmgrd-operation.xml">
<!ENTITY repmgrd-bdr SYSTEM "repmgrd-bdr.xml">
<!ENTITY repmgr-primary-register SYSTEM "repmgr-primary-register.xml"> <!ENTITY repmgr-primary-register SYSTEM "repmgr-primary-register.xml">
<!ENTITY repmgr-primary-unregister SYSTEM "repmgr-primary-unregister.xml"> <!ENTITY repmgr-primary-unregister SYSTEM "repmgr-primary-unregister.xml">
@@ -55,11 +54,11 @@
<!ENTITY repmgr-cluster-crosscheck SYSTEM "repmgr-cluster-crosscheck.xml"> <!ENTITY repmgr-cluster-crosscheck SYSTEM "repmgr-cluster-crosscheck.xml">
<!ENTITY repmgr-cluster-event SYSTEM "repmgr-cluster-event.xml"> <!ENTITY repmgr-cluster-event SYSTEM "repmgr-cluster-event.xml">
<!ENTITY repmgr-cluster-cleanup SYSTEM "repmgr-cluster-cleanup.xml"> <!ENTITY repmgr-cluster-cleanup SYSTEM "repmgr-cluster-cleanup.xml">
<!ENTITY repmgr-service-status SYSTEM "repmgr-service-status.xml"> <!ENTITY repmgr-daemon-status SYSTEM "repmgr-daemon-status.xml">
<!ENTITY repmgr-service-pause SYSTEM "repmgr-service-pause.xml">
<!ENTITY repmgr-service-unpause SYSTEM "repmgr-service-unpause.xml">
<!ENTITY repmgr-daemon-start SYSTEM "repmgr-daemon-start.xml"> <!ENTITY repmgr-daemon-start SYSTEM "repmgr-daemon-start.xml">
<!ENTITY repmgr-daemon-stop SYSTEM "repmgr-daemon-stop.xml"> <!ENTITY repmgr-daemon-stop SYSTEM "repmgr-daemon-stop.xml">
<!ENTITY repmgr-daemon-pause SYSTEM "repmgr-daemon-pause.xml">
<!ENTITY repmgr-daemon-unpause SYSTEM "repmgr-daemon-unpause.xml">
<!ENTITY appendix-release-notes SYSTEM "appendix-release-notes.xml"> <!ENTITY appendix-release-notes SYSTEM "appendix-release-notes.xml">
<!ENTITY appendix-faq SYSTEM "appendix-faq.xml"> <!ENTITY appendix-faq SYSTEM "appendix-faq.xml">

View File

@@ -26,18 +26,10 @@
<ulink url="https://dl.2ndquadrant.com/">public repository</ulink>; see following <ulink url="https://dl.2ndquadrant.com/">public repository</ulink>; see following
section for details. section for details.
</para> </para>
<note>
<para>
Currently the <ulink url="https://2ndquadrant.com">2ndQuadrant</ulink>
<ulink url="https://dl.2ndquadrant.com/">public repository</ulink> provides
support for RedHat/CentOS versions 5, 6 and 7. Support for version 8 is
available via the PGDG repository; see below for details.
</para>
</note>
<para> <para>
RPM packages for &repmgr; are also available via Yum through RPM packages for &repmgr; are also available via Yum through
the PostgreSQL Global Development Group (PGDG) RPM repository the PostgreSQL Global Development Group RPM repository
(<ulink url="https://yum.postgresql.org/">https://yum.postgresql.org/</ulink>). (<ulink url="https://yum.postgresql.org/">http://yum.postgresql.org/</ulink>).
Follow the instructions for your distribution (RedHat, CentOS, Follow the instructions for your distribution (RedHat, CentOS,
Fedora, etc.) and architecture as detailed there. Note that it can take some days Fedora, etc.) and architecture as detailed there. Note that it can take some days
for new &repmgr; packages to become available via the this repository. for new &repmgr; packages to become available via the this repository.
@@ -50,10 +42,6 @@
customers, as the PostgreSQL filesystem layout may be different to the community RPMs. customers, as the PostgreSQL filesystem layout may be different to the community RPMs.
Please contact your support vendor for assistance. Please contact your support vendor for assistance.
</para> </para>
<para>
See also <link linkend="appendix-faq">FAQ</link> entry
<xref linkend="faq-third-party-packages"/>.
</para>
</note> </note>
<para> <para>
@@ -93,9 +81,9 @@
(this enables the 2ndQuadrant repository as a source of &repmgr; packages). (this enables the 2ndQuadrant repository as a source of &repmgr; packages).
</para> </para>
<para> <para>
For example, for PostgreSQL 11 on CentOS, execute: For example, for PostgreSQL 10 on CentOS, execute:
<programlisting> <programlisting>
curl https://dl.2ndquadrant.com/default/release/get/11/rpm | sudo bash</programlisting> curl https://dl.2ndquadrant.com/default/release/get/10/rpm | sudo bash</programlisting>
</para> </para>
<para> <para>
@@ -111,8 +99,8 @@ curl https://dl.2ndquadrant.com/default/release/get/9.6/rpm | sudo bash</program
sudo yum repolist</programlisting> sudo yum repolist</programlisting>
The output should contain two entries like this: The output should contain two entries like this:
<programlisting> <programlisting>
2ndquadrant-dl-default-release-pg11/7/x86_64 2ndQuadrant packages (PG11) for 7 - x86_64 18 2ndquadrant-dl-default-release-pg10/7/x86_64 2ndQuadrant packages (PG10) for 7 - x86_64 4
2ndquadrant-dl-default-release-pg11-debug/7/x86_64 2ndQuadrant packages (PG11) for 7 - x86_64 - Debug 8</programlisting> 2ndquadrant-dl-default-release-pg10-debug/7/x86_64 2ndQuadrant packages (PG10) for 7 - x86_64 - Debug 3</programlisting>
</para> </para>
</listitem> </listitem>
@@ -120,7 +108,7 @@ sudo yum repolist</programlisting>
<para> <para>
Install the &repmgr; version appropriate for your PostgreSQL version (e.g. <literal>repmgr10</literal>): Install the &repmgr; version appropriate for your PostgreSQL version (e.g. <literal>repmgr10</literal>):
<programlisting> <programlisting>
sudo yum install repmgr11</programlisting> sudo yum install repmgr10</programlisting>
</para> </para>
<note> <note>
<para> <para>
@@ -165,23 +153,19 @@ yum search repmgr</programlisting>
To install a specific package version, execute <command>yum --showduplicates list</command> To install a specific package version, execute <command>yum --showduplicates list</command>
for the package in question: for the package in question:
<programlisting> <programlisting>
[root@localhost ~]# yum --showduplicates list repmgr11 [root@localhost ~]# yum --showduplicates list repmgr10
Loaded plugins: fastestmirror Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile Loading mirror speeds from cached hostfile
* base: ftp.tsukuba.wide.ad.jp * base: ftp.iij.ad.jp
* epel: nrt.edge.kernel.org * extras: ftp.iij.ad.jp
* extras: ftp.tsukuba.wide.ad.jp * updates: ftp.iij.ad.jp
* updates: ftp.tsukuba.wide.ad.jp Available Packages
Installed Packages repmgr10.x86_64 4.0.3-1.rhel7 pgdg10
repmgr11.x86_64 4.4.0-1.rhel7 @pgdg11 repmgr10.x86_64 4.0.4-1.rhel7 pgdg10
Available Packages repmgr10.x86_64 4.0.5-1.el7 2ndquadrant-repo-10</programlisting>
repmgr11.x86_64 4.2-1.el7 2ndquadrant-dl-default-release-pg11
repmgr11.x86_64 4.2-2.el7 2ndquadrant-dl-default-release-pg11
repmgr11.x86_64 4.3-1.el7 2ndquadrant-dl-default-release-pg11
repmgr11.x86_64 4.4-1.el7 2ndquadrant-dl-default-release-pg11</programlisting>
then append the appropriate version number to the package name with a hyphen, e.g.: then append the appropriate version number to the package name with a hyphen, e.g.:
<programlisting> <programlisting>
[root@localhost ~]# yum install repmgr11-4.3-1.el7</programlisting> [root@localhost ~]# yum install repmgr10-4.0.3-1.rhel7</programlisting>
</para> </para>
<para> <para>
@@ -206,7 +190,7 @@ repmgr11.x86_64 4.4-1.el7 2nd
</indexterm> </indexterm>
<para>.deb packages for &repmgr; are available from the <para>.deb packages for &repmgr; are available from the
PostgreSQL Community APT repository (<ulink url="https://apt.postgresql.org/">https://apt.postgresql.org/</ulink>). PostgreSQL Community APT repository (<ulink url="http://apt.postgresql.org/">http://apt.postgresql.org/</ulink>).
Instructions can be found in the APT section of the PostgreSQL Wiki Instructions can be found in the APT section of the PostgreSQL Wiki
(<ulink url="https://wiki.postgresql.org/wiki/Apt">https://wiki.postgresql.org/wiki/Apt</ulink>). (<ulink url="https://wiki.postgresql.org/wiki/Apt">https://wiki.postgresql.org/wiki/Apt</ulink>).
</para> </para>
@@ -236,13 +220,13 @@ repmgr11.x86_64 4.4-1.el7 2nd
<itemizedlist> <itemizedlist>
<listitem> <listitem>
<para> <para>
Install the repository definition for your distribution and PostgreSQL version Install the repository definition for your distribution and PostgreSQL version
(this enables the 2ndQuadrant repository as a source of &repmgr; packages) by executing: (this enables the 2ndQuadrant repository as a source of &repmgr; packages) by executing:
<programlisting> <programlisting>
curl https://dl.2ndquadrant.com/default/release/get/deb | sudo bash</programlisting> curl https://dl.2ndquadrant.com/default/release/get/deb | sudo bash</programlisting>
</para> </para>
<note> <note>
<para> <para>
This will automatically install the following additional packages, if not already present: This will automatically install the following additional packages, if not already present:
@@ -258,20 +242,20 @@ repmgr11.x86_64 4.4-1.el7 2nd
</note> </note>
</listitem> </listitem>
<listitem> <listitem>
<para> <para>
Install the &repmgr; version appropriate for your PostgreSQL version (e.g. <literal>repmgr11</literal>): Install the &repmgr; version appropriate for your PostgreSQL version (e.g. <literal>repmgr10</literal>):
<programlisting> <programlisting>
sudo apt-get install postgresql-11-repmgr</programlisting> sudo apt-get install postgresql-10-repmgr</programlisting>
</para> </para>
<note> <note>
<para> <para>
For packages for PostgreSQL 9.6 and earlier, the package name includes For packages for PostgreSQL 9.6 and earlier, the package name includes
a period between major and minor version numbers, e.g. a period between major and minor version numbers, e.g.
<literal>postgresql-9.6-repmgr</literal>. <literal>postgresql-9.6-repmgr</literal>.
</para> </para>
</note> </note>
</listitem> </listitem>
</itemizedlist> </itemizedlist>

View File

@@ -14,7 +14,7 @@
</para> </para>
<para> <para>
&repmgr; &repmgrversion; is compatible with all PostgreSQL versions from 9.4. See &repmgr; 4.x is compatible with all PostgreSQL versions from 9.3. See
section <link linkend="install-compatibility-matrix">&repmgr; compatibility matrix</link> section <link linkend="install-compatibility-matrix">&repmgr; compatibility matrix</link>
for an overview of version compatibility. for an overview of version compatibility.
</para> </para>
@@ -39,13 +39,13 @@
<note> <note>
<simpara> <simpara>
The same &quot;major&quot; &repmgr; version (e.g. <literal>&repmgrversion;.x</literal>) <emphasis>must</emphasis> The same &quot;major&quot; &repmgr; version (e.g. <literal>4.2.x</literal>) <emphasis>must</emphasis>
be installed on all node in the replication cluster. We strongly recommend keeping all be installed on all node in the replication cluster. We strongly recommend keeping all
nodes on the same (preferably latest) &quot;minor&quot; &repmgr; version to minimize the risk nodes on the same (preferably latest) &quot;minor&quot; &repmgr; version to minimize the risk
of incompatibilities. of incompatibilities.
</simpara> </simpara>
<simpara> <simpara>
If different &quot;major&quot; &repmgr; versions (e.g. 4.1.x and &repmgrversion;.x) If different &quot;major&quot; &repmgr; versions (e.g. 3.3.x and 4.1.x)
are installed on different nodes, in the best case &repmgr; (in particular &repmgrd;) are installed on different nodes, in the best case &repmgr; (in particular &repmgrd;)
will not run. In the worst case, you will end up with a broken cluster. will not run. In the worst case, you will end up with a broken cluster.
</simpara> </simpara>
@@ -93,15 +93,12 @@
<table id="repmgr-compatibility-matrix"> <table id="repmgr-compatibility-matrix">
<title>&repmgr; compatibility matrix</title> <title>&repmgr; compatibility matrix</title>
<tgroup cols="4"> <tgroup cols="3">
<thead> <thead>
<row> <row>
<entry> <entry>
&repmgr; version &repmgr; version
</entry> </entry>
<entry>
Supported?
</entry>
<entry> <entry>
Latest release Latest release
</entry> </entry>
@@ -112,76 +109,12 @@
</thead> </thead>
<tbody> <tbody>
<row>
<entry>
&repmgr; 5.3
</entry>
<entry>
YES
</entry>
<entry>
<link linkend="release-current">&repmgrversion;</link> (&releasedate;)
</entry>
<entry>
9.4, 9.5, 9.6, 10, 11, 12, 13, 14
</entry>
</row>
<row>
<entry>
&repmgr; 5.2
</entry>
<entry>
NO
</entry>
<entry>
<link linkend="release-5.2.0">5.2.0</link> (2020-10-22)
</entry>
<entry>
9.4, 9.5, 9.6, 10, 11, 12, 13
</entry>
</row>
<row>
<entry>
&repmgr; 5.1
</entry>
<entry>
NO
</entry>
<entry>
<link linkend="release-5.1.0">5.1.0</link> (2020-04-13)
</entry>
<entry>
9.3, 9.4, 9.5, 9.6, 10, 11, 12
</entry>
</row>
<row>
<entry>
&repmgr; 5.0
</entry>
<entry>
NO
</entry>
<entry>
<link linkend="release-5.0">5.0</link> (2019-10-15)
</entry>
<entry>
9.3, 9.4, 9.5, 9.6, 10, 11, 12
</entry>
</row>
<row> <row>
<entry> <entry>
&repmgr; 4.x &repmgr; 4.x
</entry> </entry>
<entry> <entry>
NO <link linkend="release-4.2">4.2</link> (2018-10-24)
</entry>
<entry>
<link linkend="release-4.4">4.4</link> (2019-06-27)
</entry> </entry>
<entry> <entry>
9.3, 9.4, 9.5, 9.6, 10, 11 9.3, 9.4, 9.5, 9.6, 10, 11
@@ -192,9 +125,6 @@
<entry> <entry>
&repmgr; 3.x &repmgr; 3.x
</entry> </entry>
<entry>
NO
</entry>
<entry> <entry>
<ulink url="https://repmgr.org/release-notes-3.3.2.html">3.3.2</ulink> (2017-05-30) <ulink url="https://repmgr.org/release-notes-3.3.2.html">3.3.2</ulink> (2017-05-30)
</entry> </entry>
@@ -207,9 +137,6 @@
<entry> <entry>
&repmgr; 2.x &repmgr; 2.x
</entry> </entry>
<entry>
NO
</entry>
<entry> <entry>
<ulink url="https://repmgr.org/release-notes-2.0.3.html">2.0.3</ulink> (2015-04-16) <ulink url="https://repmgr.org/release-notes-2.0.3.html">2.0.3</ulink> (2015-04-16)
</entry> </entry>
@@ -227,61 +154,28 @@
The &repmgr; 2.x and 3.x series are no longer maintained or supported. The &repmgr; 2.x and 3.x series are no longer maintained or supported.
We strongly recommend upgrading to the latest &repmgr; version. We strongly recommend upgrading to the latest &repmgr; version.
</para> </para>
<para>
Following the release of &repmgr; 5.0, there will be no further releases of
the &repmgr; 4.x series. Note that &repmgr; 5.x is an incremental development
of the 4.x series and &repmgr; 4.x users should upgrade to this as soon as possible.
</para>
</important> </important>
</sect2>
<sect2 id="install-postgresql-93-94">
<title>PostgreSQL 9.4 support</title>
<indexterm>
<primary>PostgreSQL 9.4</primary>
<secondary>repmgr support</secondary>
</indexterm>
<para> <para>
Note that some &repmgr; functionality is not available in PostgreSQL 9.4: Note that some &repmgr; functionality is not available in PostgreSQL 9.3 and PostgreSQL 9.4.
</para> </para>
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">
<listitem> <listitem>
<para> <para>
In PostgreSQL 9.4, <command>pg_rewind</command> is not part of the core PostgreSQL 9.3 does not support replication slots, so corresponding &repmgr; functionality
is not available.
</para>
</listitem>
<listitem>
<para>
In PostgreSQL 9.3 and PostgreSQL 9.4, <command>pg_rewind</command> is not part of the core
distribution. <command>pg_rewind</command> will need to be compiled separately to be able distribution. <command>pg_rewind</command> will need to be compiled separately to be able
to use any &repmgr; functionality which takes advantage of it. to use any &repmgr; functionality which takes advantage of it.
</para> </para>
</listitem> </listitem>
</itemizedlist> </itemizedlist>
<warning>
<para>
PostgreSQL 9.3 has reached the end of its community support period (final release was
<ulink url="https://www.postgresql.org/docs/9.3/release-9-3-25.html">9.3.25</ulink>
in November 2018) and will no longer be updated with security or bugfixes.
</para>
<para>
Beginning with &repmgr; 5.2, &repmgr; no longer supports PostgreSQL 9.3.
</para>
<para>
PostgreSQL 9.4 has reached the end of its community support period (final release was
<ulink url="https://www.postgresql.org/docs/9.4/release-9-4-26.html">9.4.26</ulink>
in February 2020) and will no longer be updated with security or bugfixes.
</para>
<para>
We recommend that users of these versions migrate to a supported PostgreSQL version
as soon as possible.
</para>
<para>
For further details, see the <ulink url="https://www.postgresql.org/support/versioning/">PostgreSQL Versioning Policy</ulink>.
</para>
</warning>
</sect2> </sect2>
</sect1> </sect1>

View File

@@ -24,7 +24,8 @@
<listitem> <listitem>
<para> <para>
<literal>Debian</literal> and <literal>Ubuntu</literal>: First <literal>Debian</literal> and <literal>Ubuntu</literal>: First
add the <ulink url="https://apt.postgresql.org/">apt.postgresql.org</ulink> add the <ulink
url="http://apt.postgresql.org/">apt.postgresql.org</ulink>
repository to your <filename>sources.list</filename> if you repository to your <filename>sources.list</filename> if you
have not already done so, and ensure the source repository is enabled. have not already done so, and ensure the source repository is enabled.
</para> </para>
@@ -35,8 +36,8 @@
line in the repository file, which is usually line in the repository file, which is usually
<filename>/etc/apt/sources.list.d/pgdg.list</filename>, e.g.: <filename>/etc/apt/sources.list.d/pgdg.list</filename>, e.g.:
<programlisting> <programlisting>
deb https://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main deb http://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main
deb-src https://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main</programlisting> deb-src http://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main</programlisting>
</para> </para>
</tip> </tip>
<para> <para>
@@ -60,9 +61,6 @@ deb-src https://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main</programlist
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara><literal>flex</literal></simpara>
</listitem>
<listitem> <listitem>
<simpara><literal>libedit-dev</literal></simpara> <simpara><literal>libedit-dev</literal></simpara>
</listitem> </listitem>
@@ -117,9 +115,6 @@ deb-src https://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main</programlist
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara><literal>flex</literal></simpara>
</listitem>
<listitem> <listitem>
<simpara><literal>libselinux-devel</literal></simpara> <simpara><literal>libselinux-devel</literal></simpara>
</listitem> </listitem>
@@ -178,18 +173,17 @@ deb-src https://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main</programlist
<para> <para>
The source for &repmgr; is maintained at The source for &repmgr; is maintained at
<ulink url="https://github.com/EnterpriseDB/repmgr">https://github.com/EnterpriseDB/repmgr</ulink>. <ulink url="https://github.com/2ndQuadrant/repmgr">https://github.com/2ndQuadrant/repmgr</ulink>.
</para> </para>
<para> <para>
There are also tags for each <ulink url="https://github.com/EnterpriseDB/repmgr/releases">&repmgr; release</ulink>, e.g. There are also tags for each &repmgr; release, e.g. <literal>v4.2.0</literal>.
<literal><ulink url="https://github.com/EnterpriseDB/repmgr/releases/tag/v4.4.0">v4.4.0</ulink></literal>.
</para> </para>
<para> <para>
Clone the source code using <application>git</application>: Clone the source code using <application>git</application>:
<programlisting> <programlisting>
git clone https://github.com/EnterpriseDB/repmgr</programlisting> git clone https://github.com/2ndQuadrant/repmgr</programlisting>
</para> </para>
<para> <para>

View File

@@ -3,16 +3,16 @@
<date>2017</date> <date>2017</date>
<copyright> <copyright>
<year>2010-2021</year> <year>2010-2019</year>
<holder>EnterpriseDB Corporation</holder> <holder>2ndQuadrant, Ltd.</holder>
</copyright> </copyright>
<legalnotice id="legalnotice"> <legalnotice id="legalnotice">
<title>Legal Notice</title> <title>Legal Notice</title>
<para> <para>
<productname>repmgr</productname> is Copyright &copy; 2010-2021 <productname>repmgr</productname> is Copyright &copy; 2010-2019
by EnterpriseDB Corporation All rights reserved. by 2ndQuadrant, Ltd. All rights reserved.
</para> </para>
<para> <para>

View File

@@ -167,7 +167,7 @@
For the sake of simplicity, the <literal>repmgr</literal> user is created For the sake of simplicity, the <literal>repmgr</literal> user is created
as a superuser. If desired, it's possible to create the <literal>repmgr</literal> as a superuser. If desired, it's possible to create the <literal>repmgr</literal>
user as a normal user. However for certain operations superuser permissions user as a normal user. However for certain operations superuser permissions
are required; in this case the command line option <command>--superuser</command> are requiredl; in this case the command line option <command>--superuser</command>
can be provided to specify a superuser. can be provided to specify a superuser.
</para> </para>
<para> <para>
@@ -254,7 +254,7 @@
</para> </para>
<programlisting> <programlisting>
node_id=1 node_id=1
node_name='node1' node_name=node1
conninfo='host=node1 user=repmgr dbname=repmgr connect_timeout=2' conninfo='host=node1 user=repmgr dbname=repmgr connect_timeout=2'
data_directory='/var/lib/postgresql/data' data_directory='/var/lib/postgresql/data'
</programlisting> </programlisting>
@@ -265,6 +265,7 @@
server. See sections <xref linkend="configuration"/> and <xref linkend="configuration-file"/> server. See sections <xref linkend="configuration"/> and <xref linkend="configuration-file"/>
for further details about <filename>repmgr.conf</filename>. for further details about <filename>repmgr.conf</filename>.
</para> </para>
<note> <note>
<para> <para>
&repmgr; only uses <option>pg_bindir</option> when it executes &repmgr; only uses <option>pg_bindir</option> when it executes
@@ -284,7 +285,7 @@
<tip> <tip>
<simpara> <simpara>
For Debian-based distributions we recommend explicitly setting For Debian-based distributions we recommend explictly setting
<option>pg_bindir</option> to the directory where <command>pg_ctl</command> and other binaries <option>pg_bindir</option> to the directory where <command>pg_ctl</command> and other binaries
not in the standard path are located. For PostgreSQL 9.6 this would be <filename>/usr/lib/postgresql/9.6/bin/</filename>. not in the standard path are located. For PostgreSQL 9.6 this would be <filename>/usr/lib/postgresql/9.6/bin/</filename>.
</simpara> </simpara>
@@ -302,7 +303,7 @@
<para> <para>
See the file See the file
<ulink url="https://raw.githubusercontent.com/EnterpriseDB/repmgr/master/repmgr.conf.sample">repmgr.conf.sample</ulink> <ulink url="https://raw.githubusercontent.com/2ndQuadrant/repmgr/master/repmgr.conf.sample">repmgr.conf.sample</ulink>
for details of all available configuration parameters. for details of all available configuration parameters.
</para> </para>
@@ -367,7 +368,7 @@
</para> </para>
<programlisting> <programlisting>
node_id=2 node_id=2
node_name='node2' node_name=node2
conninfo='host=node2 user=repmgr dbname=repmgr connect_timeout=2' conninfo='host=node2 user=repmgr dbname=repmgr connect_timeout=2'
data_directory='/var/lib/postgresql/data'</programlisting> data_directory='/var/lib/postgresql/data'</programlisting>
<para> <para>
@@ -477,8 +478,6 @@
latest_end_lsn | 0/7000538 latest_end_lsn | 0/7000538
latest_end_time | 2017-08-28 15:20:56.418735+09 latest_end_time | 2017-08-28 15:20:56.418735+09
slot_name | slot_name |
sender_host | node1
sender_port | 5432
conninfo | user=repmgr dbname=replication host=node1 application_name=node2 conninfo | user=repmgr dbname=replication host=node1 application_name=node2
</programlisting> </programlisting>
Note that the <varname>conninfo</varname> value is that generated in <filename>recovery.conf</filename> Note that the <varname>conninfo</varname> value is that generated in <filename>recovery.conf</filename>
@@ -498,12 +497,11 @@
<para> <para>
Check the node is registered by executing <command>repmgr cluster show</command> on the standby: Check the node is registered by executing <command>repmgr cluster show</command> on the standby:
<programlisting> <programlisting>
$ repmgr -f /etc/repmgr.conf cluster show $ repmgr -f /etc/repmgr.conf cluster show
ID | Name | Role | Status | Upstream | Location | Connection string
ID | Name | Role | Status | Upstream | Location | Priority | Timeline | Connection string ----+-------+---------+-----------+----------+----------+--------------------------------------
----+-------+---------+-----------+----------+----------+----------+----------+-------------------------------------- 1 | node1 | primary | * running | | default | host=node1 dbname=repmgr user=repmgr
1 | node1 | primary | * running | | default | 100 | 1 | host=node1 dbname=repmgr user=repmgr 2 | node2 | standby | running | node1 | default | host=node2 dbname=repmgr user=repmgr</programlisting>
2 | node2 | standby | running | node1 | default | 100 | 1 | host=node2 dbname=repmgr user=repmgr</programlisting>
</para> </para>
<para> <para>
Both nodes are now registered with &repmgr; and the records have been copied to the standby server. Both nodes are now registered with &repmgr; and the records have been copied to the standby server.

View File

@@ -18,7 +18,7 @@
<para> <para>
Displays information about each registered node in the replication cluster. This Displays information about each registered node in the replication cluster. This
command polls each registered server and shows its role (<literal>primary</literal> / command polls each registered server and shows its role (<literal>primary</literal> /
<literal>standby</literal>) and status. It polls each server <literal>standby</literal> / <literal>bdr</literal>) and status. It polls each server
directly and can be run on any node in the cluster; this is also useful when analyzing directly and can be run on any node in the cluster; this is also useful when analyzing
connectivity from a particular node. connectivity from a particular node.
</para> </para>
@@ -53,13 +53,12 @@
<para> <para>
<programlisting> <programlisting>
$ repmgr -f /etc/repmgr.conf cluster show $ repmgr -f /etc/repmgr.conf cluster show
ID | Name | Role | Status | Upstream | Location | Priority | Timeline | Connection string ID | Name | Role | Status | Upstream | Location | Priority | Timeline | Connection string
----+-------+---------+-----------+----------+----------+----------+----------+----------------------------------------- ----+-------+---------+-----------+----------+----------+----------+-----------------------------------------
1 | node1 | primary | * running | | default | 100 | 1 | host=db_node1 dbname=repmgr user=repmgr 1 | node1 | primary | * running | | default | 100 | 1 | host=db_node1 dbname=repmgr user=repmgr
2 | node2 | standby | running | node1 | default | 100 | 1 | host=db_node2 dbname=repmgr user=repmgr 2 | node2 | standby | running | node1 | default | 100 | 1 | host=db_node2 dbname=repmgr user=repmgr
3 | node3 | standby | running | node1 | default | 100 | 1 | host=db_node3 dbname=repmgr user=repmgr 3 | node3 | standby | running | node1 | default | 100 | 1 | host=db_node3 dbname=repmgr user=repmgr</programlisting>
4 | node4 | standby | running | node1 | default | 100 | 1 | host=db_node4 dbname=repmgr user=repmgr
5 | node5 | witness | * running | node1 | default | 0 | n/a | host=db_node5 dbname=repmgr user=repmgr</programlisting>
</para> </para>
</refsect1> </refsect1>
<refsect1> <refsect1>
@@ -83,22 +82,18 @@
(but <literal>node3</literal> is not attached to it, and its metadata has not yet been updated); (but <literal>node3</literal> is not attached to it, and its metadata has not yet been updated);
<literal>node4</literal> is running but rejecting connections (from <literal>node3</literal> at least). <literal>node4</literal> is running but rejecting connections (from <literal>node3</literal> at least).
<programlisting> <programlisting>
ID | Name | Role | Status | Upstream | Location | Priority | Timeline | Connection string ID | Name | Role | Status | Upstream | Location | Priority | Connection string
----+-------+---------+----------------------+----------+----------+----------+----------+---------------------------------------------------- ----+-------+---------+----------------------+----------+----------+----------+-----------------------------------------
1 | node1 | primary | ? unreachable | | default | 100 | | host=db_node1 dbname=repmgr user=repmgr 1 | node1 | primary | ? unreachable | | default | 100 | host=db_node1 dbname=repmgr user=repmgr
2 | node2 | standby | ! running as primary | ? node1 | default | 100 | 2 | host=db_node2 dbname=repmgr user=repmgr 2 | node2 | standby | ! running as primary | node1 | default | 100 | host=db_node2 dbname=repmgr user=repmgr
3 | node3 | standby | running | ? node1 | default | 100 | 1 | host=db_node3 dbname=repmgr user=repmgr 3 | node3 | standby | running | node1 | default | 100 | host=db_node3 dbname=repmgr user=repmgr
4 | node4 | standby | ? running | ? node1 | default | 100 | | host=db_node4 dbname=repmgr user=repmgr 4 | node4 | standby | ? running | node1 | default | 100 | host=db_node4 dbname=repmgr user=repmgr
WARNING: following issues were detected WARNING: following issues were detected
- unable to connect to node "node1" (ID: 1) - unable to connect to node "node1" (ID: 1)
- node "node1" (ID: 1) is registered as an active primary but is unreachable - node "node1" (ID: 1) is registered as an active primary but is unreachable
- node "node2" (ID: 2) is registered as standby but running as primary - node "node2" (ID: 2) is registered as standby but running as primary
- unable to connect to node "node2" (ID: 2)'s upstream node "node1" (ID: 1) - unable to connect to node "node4" (ID: 4)
- unable to determine if node "node2" (ID: 2) is attached to its upstream node "node1" (ID: 1)
- unable to connect to node "node3" (ID: 3)'s upstream node "node1" (ID: 1)
- unable to determine if node "node3" (ID: 3) is attached to its upstream node "node1" (ID: 1)
- unable to connect to node "node4" (ID: 4)
HINT: execute with --verbose option to see connection error messages</programlisting> HINT: execute with --verbose option to see connection error messages</programlisting>
</para> </para>
<para> <para>
@@ -238,7 +233,7 @@
<refsect1> <refsect1>
<title>See also</title> <title>See also</title>
<para> <para>
<xref linkend="repmgr-node-status"/>, <xref linkend="repmgr-node-check"/>, <xref linkend="repmgr-service-status"/> <xref linkend="repmgr-node-status"/>, <xref linkend="repmgr-node-check"/>, <xref linkend="repmgr-daemon-status"/>
</para> </para>
</refsect1> </refsect1>

View File

@@ -1,6 +1,6 @@
<refentry id="repmgr-service-pause"> <refentry id="repmgr-daemon-pause">
<indexterm> <indexterm>
<primary>repmgr service pause</primary> <primary>repmgr daemon pause</primary>
</indexterm> </indexterm>
<indexterm> <indexterm>
@@ -9,11 +9,11 @@
</indexterm> </indexterm>
<refmeta> <refmeta>
<refentrytitle>repmgr service pause</refentrytitle> <refentrytitle>repmgr daemon pause</refentrytitle>
</refmeta> </refmeta>
<refnamediv> <refnamediv>
<refname>repmgr service pause</refname> <refname>repmgr daemon pause</refname>
<refpurpose>Instruct all &repmgrd; instances in the replication cluster to pause failover operations</refpurpose> <refpurpose>Instruct all &repmgrd; instances in the replication cluster to pause failover operations</refpurpose>
</refnamediv> </refnamediv>
@@ -32,29 +32,20 @@
<note> <note>
<para> <para>
It's important to wait a few seconds after restarting PostgreSQL on any node before running It's important to wait a few seconds after restarting PostgreSQL on any node before running
<command>repmgr service pause</command>, as the &repmgrd; instance <command>repmgr daemon pause</command>, as the &repmgrd; instance
on the restarted node will take a second or two before it has updated its status. on the restarted node will take a second or two before it has updated its status.
</para> </para>
</note> </note>
<para> <para>
<xref linkend="repmgr-service-unpause"/> will instruct all previously paused &repmgrd; <xref linkend="repmgr-daemon-unpause"/> will instruct all previously paused &repmgrd;
instances to resume normal failover operation. instances to resume normal failover operation.
</para> </para>
</refsect1> </refsect1>
<refsect1>
<title>Prerequisites</title>
<para>
PostgreSQL must be accessible on all nodes (using the <varname>conninfo</varname> string shown by
<link linkend="repmgr-cluster-show"><command>repmgr cluster show</command></link>)
from the node where <command>repmgr service pause</command> is executed.
</para>
</refsect1>
<refsect1> <refsect1>
<title>Execution</title> <title>Execution</title>
<para> <para>
<command>repmgr service pause</command> can be executed on any active node in the <command>repmgr daemon pause</command> can be executed on any active node in the
replication cluster. A valid <filename>repmgr.conf</filename> file is required. replication cluster. A valid <filename>repmgr.conf</filename> file is required.
It will have no effect on previously paused nodes. It will have no effect on previously paused nodes.
</para> </para>
@@ -64,7 +55,7 @@
<title>Example</title> <title>Example</title>
<para> <para>
<programlisting> <programlisting>
$ repmgr -f /etc/repmgr.conf service pause $ repmgr -f /etc/repmgr.conf daemon pause
NOTICE: node 1 (node1) paused NOTICE: node 1 (node1) paused
NOTICE: node 2 (node2) paused NOTICE: node 2 (node2) paused
NOTICE: node 3 (node3) paused</programlisting> NOTICE: node 3 (node3) paused</programlisting>
@@ -88,7 +79,7 @@ NOTICE: node 3 (node3) paused</programlisting>
<refsect1> <refsect1>
<title>Exit codes</title> <title>Exit codes</title>
<para> <para>
One of the following exit codes will be emitted by <command>repmgr service unpause</command>: One of the following exit codes will be emitted by <command>repmgr daemon unpause</command>:
</para> </para>
<variablelist> <variablelist>
@@ -116,11 +107,7 @@ NOTICE: node 3 (node3) paused</programlisting>
<refsect1> <refsect1>
<title>See also</title> <title>See also</title>
<para> <para>
<xref linkend="repmgr-service-unpause"/>, <xref linkend="repmgr-daemon-unpause"/>, <xref linkend="repmgr-daemon-status"/>
<xref linkend="repmgr-service-status"/>,
<xref linkend="repmgrd-pausing"/>,
<xref linkend="repmgr-daemon-start"/>,
<xref linkend="repmgr-daemon-stop"/>
</para> </para>
</refsect1> </refsect1>
</refentry> </refentry>

View File

@@ -14,18 +14,18 @@
<refnamediv> <refnamediv>
<refname>repmgr daemon start</refname> <refname>repmgr daemon start</refname>
<refpurpose>Start the &repmgrd; daemon on the local node</refpurpose> <refpurpose>Start the &repmgrd; daemon</refpurpose>
</refnamediv> </refnamediv>
<refsect1> <refsect1>
<title>Description</title> <title>Description</title>
<para> <para>
This command starts the &repmgrd; service on the This command starts the &repmgrd; daemon on the
local node. local node.
</para> </para>
<para> <para>
By default, &repmgr; will wait for up to 15 seconds to confirm that &repmgrd; By default, &repmgr; will wait for up to 15 seconds to confirm that &repmgrd;
started. This behaviour can be overridden by specifying a different value using the <option>--wait</option> started. This behaviour can be overridden by specifying a diffent value using the <option>--wait</option>
option, or disabled altogether with the <option>--no-wait</option> option. option, or disabled altogether with the <option>--no-wait</option> option.
</para> </para>
@@ -197,11 +197,7 @@
<refsect1> <refsect1>
<title>See also</title> <title>See also</title>
<para> <para>
<xref linkend="repmgr-daemon-stop"/>, <xref linkend="repmgr-daemon-stop"/>, <xref linkend="repmgr-daemon-status"/>, <xref linkend="repmgrd-daemon"/>
<xref linkend="repmgrd-daemon"/>,
<xref linkend="repmgr-service-status"/>,
<xref linkend="repmgr-service-pause"/>,
<xref linkend="repmgr-service-unpause"/>
</para> </para>
</refsect1> </refsect1>

View File

@@ -1,19 +1,19 @@
<refentry id="repmgr-service-status"> <refentry id="repmgr-daemon-status">
<indexterm> <indexterm>
<primary>repmgr service status</primary> <primary>repmgr daemon status</primary>
</indexterm> </indexterm>
<indexterm> <indexterm>
<primary>repmgrd</primary> <primary>repmgrd</primary>
<secondary>displaying service status</secondary> <secondary>displaying daemon status</secondary>
</indexterm> </indexterm>
<refmeta> <refmeta>
<refentrytitle>repmgr service status</refentrytitle> <refentrytitle>repmgr daemon status</refentrytitle>
</refmeta> </refmeta>
<refnamediv> <refnamediv>
<refname>repmgr service status</refname> <refname>repmgr daemon status</refname>
<refpurpose>display information about the status of &repmgrd; on each node in the cluster</refpurpose> <refpurpose>display information about the status of &repmgrd; on each node in the cluster</refpurpose>
</refnamediv> </refnamediv>
@@ -22,33 +22,21 @@
<para> <para>
This command provides an overview over all active nodes in the cluster and the state This command provides an overview over all active nodes in the cluster and the state
of each node's &repmgrd; instance. It can be used to check of each node's &repmgrd; instance. It can be used to check
the result of <xref linkend="repmgr-service-pause"/> and <xref linkend="repmgr-service-unpause"/> the result of <xref linkend="repmgr-daemon-pause"/> and <xref linkend="repmgr-daemon-unpause"/>
operations. operations.
</para> </para>
</refsect1> </refsect1>
<refsect1>
<title>Prerequisites</title>
<para>
PostgreSQL should be accessible on all nodes (using the <varname>conninfo</varname> string shown by
<link linkend="repmgr-cluster-show"><command>repmgr cluster show</command></link>)
from the node where <command>repmgr service status</command> is executed.
</para>
</refsect1>
<refsect1> <refsect1>
<title>Execution</title> <title>Execution</title>
<para> <para>
<command>repmgr service status</command> can be executed on any active node in the <command>repmgr daemon status</command> can be executed on any active node in the
replication cluster. A valid <filename>repmgr.conf</filename> file is required. replication cluster. A valid <filename>repmgr.conf</filename> file is required.
</para> </para>
<para> <para>
If a node is not accessible, or PostgreSQL itself is not running on the node, If PostgreSQL is not running on a node, &repmgr; will not be able to determine the
&repmgr; will not be able to determine the status of that node's &repmgrd; instance, status of that node's &repmgrd; instance.
and &quot;<literal>n/a</literal>&quot; will be displayed in the node's <literal>repmgrd</literal>
column.
</para> </para>
<note> <note>
<para> <para>
After restarting PostgreSQL on any node, the &repmgrd; instance After restarting PostgreSQL on any node, the &repmgrd; instance
@@ -63,7 +51,7 @@
<title>Examples</title> <title>Examples</title>
<para> <para>
&repmgrd; running normally on all nodes: &repmgrd; running normally on all nodes:
<programlisting>$ repmgr -f /etc/repmgr.conf service status <programlisting>$ repmgr -f /etc/repmgr.conf daemon status
ID | Name | Role | Status | Upstream | repmgrd | PID | Paused? | Upstream last seen ID | Name | Role | Status | Upstream | repmgrd | PID | Paused? | Upstream last seen
----+-------+---------+-----------+----------+---------+-------+---------+-------------------- ----+-------+---------+-----------+----------+---------+-------+---------+--------------------
1 | node1 | primary | * running | | running | 96563 | no | n/a 1 | node1 | primary | * running | | running | 96563 | no | n/a
@@ -72,8 +60,8 @@
</para> </para>
<para> <para>
&repmgrd; paused on all nodes (using <xref linkend="repmgr-service-pause"/>): &repmgrd; paused on all nodes (using <xref linkend="repmgr-daemon-pause"/>):
<programlisting>$ repmgr -f /etc/repmgr.conf service status <programlisting>$ repmgr -f /etc/repmgr.conf daemon status
ID | Name | Role | Status | Upstream | repmgrd | PID | Paused? | Upstream last seen ID | Name | Role | Status | Upstream | repmgrd | PID | Paused? | Upstream last seen
----+-------+---------+-----------+----------+---------+-------+---------+-------------------- ----+-------+---------+-----------+----------+---------+-------+---------+--------------------
1 | node1 | primary | * running | | running | 96563 | yes | n/a 1 | node1 | primary | * running | | running | 96563 | yes | n/a
@@ -83,7 +71,7 @@
<para> <para>
&repmgrd; not running on one node: &repmgrd; not running on one node:
<programlisting>$ repmgr -f /etc/repmgr.conf service status <programlisting>$ repmgr -f /etc/repmgr.conf daemon status
ID | Name | Role | Status | Upstream | repmgrd | PID | Paused? | Upstream last seen ID | Name | Role | Status | Upstream | repmgrd | PID | Paused? | Upstream last seen
----+-------+---------+-----------+----------+-------------+-------+---------+-------------------- ----+-------+---------+-----------+----------+-------------+-------+---------+--------------------
1 | node1 | primary | * running | | running | 96563 | yes | n/a 1 | node1 | primary | * running | | running | 96563 | yes | n/a
@@ -101,11 +89,11 @@
<term><option>--csv</option></term> <term><option>--csv</option></term>
<listitem> <listitem>
<para> <para>
<command>repmgr service status</command> accepts an optional parameter <literal>--csv</literal>, which <command>repmgr daemon status</command> accepts an optional parameter <literal>--csv</literal>, which
outputs the replication cluster's status in a simple CSV format, suitable for outputs the replication cluster's status in a simple CSV format, suitable for
parsing by scripts, e.g.: parsing by scripts, e.g.:
<programlisting> <programlisting>
$ repmgr -f /etc/repmgr.conf service status --csv $ repmgr -f /etc/repmgr.conf daemon status --csv
1,node1,primary,1,1,5722,1,100,-1,default 1,node1,primary,1,1,5722,1,100,-1,default
2,node2,standby,1,0,-1,1,100,1,default 2,node2,standby,1,0,-1,1,100,1,default
3,node3,standby,1,1,5779,1,100,1,default</programlisting> 3,node3,standby,1,1,5779,1,100,1,default</programlisting>
@@ -183,7 +171,7 @@
<listitem> <listitem>
<para> <para>
Display additional information (<literal>location</literal>, <literal>priority</literal>) Display additional information (<literal>location</literal>, <literal>priority</literal>)
about the &repmgr; configuration. about the &repmgr; configuration.
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
@@ -192,7 +180,7 @@
<term><option>--verbose</option></term> <term><option>--verbose</option></term>
<listitem> <listitem>
<para> <para>
Display the full text of any database connection error messages. Display the full text of any database connection error messages
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
@@ -204,12 +192,7 @@
<refsect1> <refsect1>
<title>See also</title> <title>See also</title>
<para> <para>
<xref linkend="repmgr-service-pause"/>, <xref linkend="repmgr-daemon-pause"/>, <xref linkend="repmgr-daemon-unpause"/>, <xref linkend="repmgr-cluster-show"/>
<xref linkend="repmgr-service-unpause"/>,
<xref linkend="repmgr-cluster-show"/>,
<xref linkend="repmgrd-pausing"/>,
<xref linkend="repmgr-daemon-start"/>,
<xref linkend="repmgr-daemon-stop"/>
</para> </para>
</refsect1> </refsect1>
</refentry> </refentry>

View File

@@ -14,7 +14,7 @@
<refnamediv> <refnamediv>
<refname>repmgr daemon stop</refname> <refname>repmgr daemon stop</refname>
<refpurpose>Stop the &repmgrd; daemon on the local node</refpurpose> <refpurpose>Stop the &repmgrd; daemon</refpurpose>
</refnamediv> </refnamediv>
<refsect1> <refsect1>
@@ -26,7 +26,7 @@
<para> <para>
By default, &repmgr; will wait for up to 15 seconds to confirm that &repmgrd; By default, &repmgr; will wait for up to 15 seconds to confirm that &repmgrd;
stopped. This behaviour can be overridden by specifying a different value using the <option>--wait</option> stopped. This behaviour can be overridden by specifying a diffent value using the <option>--wait</option>
option, or disabled altogether with the <option>--no-wait</option> option. option, or disabled altogether with the <option>--no-wait</option> option.
</para> </para>
<note> <note>
@@ -194,11 +194,7 @@
<refsect1> <refsect1>
<title>See also</title> <title>See also</title>
<para> <para>
<xref linkend="repmgr-daemon-start"/>, <xref linkend="repmgr-daemon-start"/>, <xref linkend="repmgr-daemon-status"/>, <xref linkend="repmgrd-daemon"/>
<xref linkend="repmgrd-daemon"/>,
<xref linkend="repmgr-service-status"/>,
<xref linkend="repmgr-service-pause"/>,
<xref linkend="repmgr-service-unpause"/>
</para> </para>
</refsect1> </refsect1>

View File

@@ -1,6 +1,6 @@
<refentry id="repmgr-service-unpause"> <refentry id="repmgr-daemon-unpause">
<indexterm> <indexterm>
<primary>repmgr service unpause</primary> <primary>repmgr daemon unpause</primary>
</indexterm> </indexterm>
<indexterm> <indexterm>
@@ -8,12 +8,13 @@
<secondary>unpausing</secondary> <secondary>unpausing</secondary>
</indexterm> </indexterm>
<refmeta> <refmeta>
<refentrytitle>repmgr service unpause</refentrytitle> <refentrytitle>repmgr daemon unpause</refentrytitle>
</refmeta> </refmeta>
<refnamediv> <refnamediv>
<refname>repmgr service unpause</refname> <refname>repmgr daemon unpause</refname>
<refpurpose>Instruct all &repmgrd; instances in the replication cluster to resume failover operations</refpurpose> <refpurpose>Instruct all &repmgrd; instances in the replication cluster to resume failover operations</refpurpose>
</refnamediv> </refnamediv>
@@ -22,33 +23,24 @@
<para> <para>
This command can be run on any active node in the replication cluster to instruct all This command can be run on any active node in the replication cluster to instruct all
running &repmgrd; instances to &quot;unpause&quot; running &repmgrd; instances to &quot;unpause&quot;
(following a previous execution of <xref linkend="repmgr-service-pause"/>) (following a previous execution of <xref linkend="repmgr-daemon-pause"/>)
and resume normal failover/monitoring operation. and resume normal failover/monitoring operation.
</para> </para>
<note> <note>
<para> <para>
It's important to wait a few seconds after restarting PostgreSQL on any node before running It's important to wait a few seconds after restarting PostgreSQL on any node before running
<command>repmgr service pause</command>, as the &repmgrd; instance <command>repmgr daemon pause</command>, as the &repmgrd; instance
on the restarted node will take a second or two before it has updated its status. on the restarted node will take a second or two before it has updated its status.
</para> </para>
</note> </note>
</refsect1> </refsect1>
<refsect1>
<title>Prerequisites</title>
<para>
PostgreSQL must be accessible on all nodes (using the <varname>conninfo</varname> string shown by
<link linkend="repmgr-cluster-show"><command>repmgr cluster show</command></link>)
from the node where <command>repmgr service pause</command> is executed.
</para>
</refsect1>
<refsect1> <refsect1>
<title>Execution</title> <title>Execution</title>
<para> <para>
<command>repmgr service unpause</command> can be executed on any active node in the <command>repmgr daemon unpause</command> can be executed on any active node in the
replication cluster. A valid <filename>repmgr.conf</filename> file is required. replication cluster. A valid <filename>repmgr.conf</filename> file is required.
It will have no effect on nodes which are not already paused. It will have no effect on nodes which are not already paused.
</para> </para>
@@ -58,7 +50,7 @@
<title>Example</title> <title>Example</title>
<para> <para>
<programlisting> <programlisting>
$ repmgr -f /etc/repmgr.conf service unpause $ repmgr -f /etc/repmgr.conf daemon unpause
NOTICE: node 1 (node1) unpaused NOTICE: node 1 (node1) unpaused
NOTICE: node 2 (node2) unpaused NOTICE: node 2 (node2) unpaused
NOTICE: node 3 (node3) unpaused</programlisting> NOTICE: node 3 (node3) unpaused</programlisting>
@@ -82,7 +74,7 @@ NOTICE: node 3 (node3) unpaused</programlisting>
<refsect1> <refsect1>
<title>Exit codes</title> <title>Exit codes</title>
<para> <para>
One of the following exit codes will be emitted by <command>repmgr service unpause</command>: One of the following exit codes will be emitted by <command>repmgr daemon unpause</command>:
</para> </para>
<variablelist> <variablelist>
@@ -110,11 +102,7 @@ NOTICE: node 3 (node3) unpaused</programlisting>
<refsect1> <refsect1>
<title>See also</title> <title>See also</title>
<para> <para>
<xref linkend="repmgr-service-pause"/>, <xref linkend="repmgr-daemon-pause"/>, <xref linkend="repmgr-daemon-status"/>
<xref linkend="repmgr-service-status"/>,
<xref linkend="repmgrd-pausing"/>,
<xref linkend="repmgr-daemon-start"/>,
<xref linkend="repmgr-daemon-stop"/>
</para> </para>
</refsect1> </refsect1>
</refentry> </refentry>

View File

@@ -31,32 +31,15 @@
<refsect1> <refsect1>
<title>Example</title> <title>Example</title>
<para> <para>
Execution on the primary server:
<programlisting> <programlisting>
$ repmgr -f /etc/repmgr.conf node check $ repmgr -f /etc/repmgr.conf node check
Node "node1": Node "node1":
Server role: OK (node is primary) Server role: OK (node is primary)
Replication lag: OK (N/A - node is primary) Replication lag: OK (N/A - node is primary)
WAL archiving: OK (0 pending files) WAL archiving: OK (0 pending files)
Upstream connection: OK (N/A - is primary)
Downstream servers: OK (2 of 2 downstream nodes attached) Downstream servers: OK (2 of 2 downstream nodes attached)
Replication slots: OK (node has no physical replication slots) Replication slots: OK (node has no physical replication slots)
Missing replication slots: OK (node has no missing physical replication slots) Missing replication slots: OK (node has no missing physical replication slots)</programlisting>
Configured data directory: OK (configured "data_directory" is "/var/lib/postgresql/data")</programlisting>
</para>
<para>
Execution on a standby server:
<programlisting>
$ repmgr -f /etc/repmgr.conf node check
Node "node2":
Server role: OK (node is standby)
Replication lag: OK (0 seconds)
WAL archiving: OK (0 pending archive ready files)
Upstream connection: OK (node "node2" (ID: 2) is attached to expected upstream node "node1" (ID: 1))
Downstream servers: OK (this node has no downstream nodes)
Replication slots: OK (node has no physical replication slots)
Missing physical replication slots: OK (node has no missing physical replication slots)
Configured data directory: OK (configured "data_directory" is "/var/lib/postgresql/data")</programlisting>
</para> </para>
</refsect1> </refsect1>
<refsect1> <refsect1>
@@ -74,20 +57,20 @@
<listitem> <listitem>
<simpara> <simpara>
<option>--role</option>: checks if the node has the expected role <literal>--role</literal>: checks if the node has the expected role
</simpara> </simpara>
</listitem> </listitem>
<listitem> <listitem>
<simpara> <simpara>
<option>--replication-lag</option>: checks if the node is lagging by more than <literal>--replication-lag</literal>: checks if the node is lagging by more than
<varname>replication_lag_warning</varname> or <varname>replication_lag_critical</varname> <varname>replication_lag_warning</varname> or <varname>replication_lag_critical</varname>
</simpara> </simpara>
</listitem> </listitem>
<listitem> <listitem>
<simpara> <simpara>
<option>--archive-ready</option>: checks for WAL files which have not yet been archived, <literal>--archive-ready</literal>: checks for WAL files which have not yet been archived,
and returns <literal>WARNING</literal> or <literal>CRITICAL</literal> if the number and returns <literal>WARNING</literal> or <literal>CRITICAL</literal> if the number
exceeds <varname>archive_ready_warning</varname> or <varname>archive_ready_critical</varname> respectively. exceeds <varname>archive_ready_warning</varname> or <varname>archive_ready_critical</varname> respectively.
</simpara> </simpara>
@@ -95,115 +78,36 @@
<listitem> <listitem>
<simpara> <simpara>
<option>--downstream</option>: checks that the expected downstream nodes are attached <literal>--downstream</literal>: checks that the expected downstream nodes are attached
</simpara> </simpara>
</listitem> </listitem>
<listitem> <listitem>
<simpara> <simpara>
<option>--upstream</option>: checks that the node is attached to its expected upstream <literal>--slots</literal>: checks there are no inactive physical replication slots
</simpara> </simpara>
</listitem> </listitem>
<listitem> <listitem>
<simpara> <simpara>
<option>--slots</option>: checks there are no inactive physical replication slots <literal>--missing-slots</literal>: checks there are no missing physical replication slots
</simpara> </simpara>
</listitem> </listitem>
<listitem> <listitem>
<simpara> <simpara>
<option>--missing-slots</option>: checks there are no missing physical replication slots <literal>--data-directory-config</literal>: checks the data directory configured in
</simpara>
</listitem>
<listitem>
<simpara>
<option>--data-directory-config</option>: checks the data directory configured in
<filename>repmgr.conf</filename> matches the actual data directory. <filename>repmgr.conf</filename> matches the actual data directory.
This check is not directly related to replication, but is useful to verify &repmgr; This check is not directly related to replication, but is useful to verify &repmgr;
is correctly configured. is correctly configured.
</simpara> </simpara>
</listitem> </listitem>
</itemizedlist> </itemizedlist>
</para> </para>
</refsect1> </refsect1>
<refsect1>
<title>repmgrd</title>
<para>
A separate check is available to verify whether &repmgrd; is running,
This is not included in the general output, as this does not
per-se constitute a check of the node's replication status.
</para>
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
<option>--repmgrd</option>: checks whether &repmgrd; is running.
If &repmgrd; is running but paused, status <literal>1</literal>
(<literal>WARNING</literal>) is returned.
</simpara>
</listitem>
</itemizedlist>
</refsect1>
<refsect1>
<title>Additional checks</title>
<para>
Several checks are provided for diagnostic purposes and are not
included in the general output:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
<option>--db-connection</option>: checks if &repmgr; can connect to the
database on the local node.
</simpara>
<simpara>
This option is particularly useful in combination with <command>SSH</command>, as
it can be used to troubleshoot connection issues encountered when &repmgr; is
executed remotely (e.g. during a switchover operation).
</simpara>
</listitem>
<listitem>
<simpara>
<option>--replication-config-owner</option>: checks if the file containing replication
configuration (PostgreSQL 12 and later: <filename>postgresql.auto.conf</filename>;
PostgreSQL 11 and earlier: <filename>recovery.conf</filename>) is
owned by the same user who owns the data directory.
</simpara>
<simpara>
Incorrect ownership of these files (e.g. if they are owned by <literal>root</literal>)
will cause operations which need to update the replication configuration
(e.g. <link linkend="repmgr-standby-follow"><command>repmgr standby follow</command></link>
or <link linkend="repmgr-standby-promote"><command>repmgr standby promote</command></link>)
to fail.
</simpara>
</listitem>
</itemizedlist>
</para>
</refsect1>
<refsect1>
<title>Connection options</title>
<para>
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
<option>-S</option>/<option>--superuser</option>: connect as the
named superuser instead of the &repmgr; user
</simpara>
</listitem>
</itemizedlist>
</para>
</refsect1>
<refsect1> <refsect1>
<title>Output format</title> <title>Output format</title>
<para> <para>
@@ -211,14 +115,14 @@
<listitem> <listitem>
<simpara> <simpara>
<option>--csv</option>: generate output in CSV format (not available <literal>--csv</literal>: generate output in CSV format (not available
for individual checks) for individual checks)
</simpara> </simpara>
</listitem> </listitem>
<listitem> <listitem>
<simpara> <simpara>
<option>--nagios</option>: generate output in a Nagios-compatible format <literal>--nagios</literal>: generate output in a Nagios-compatible format
(for individual checks only) (for individual checks only)
</simpara> </simpara>
</listitem> </listitem>
@@ -226,15 +130,13 @@
</para> </para>
</refsect1> </refsect1>
<refsect1> <refsect1>
<title>Exit codes</title> <title>Exit codes</title>
<para> <para>
When executing <command>repmgr node check</command> with one of the individual When executing <command>repmgr node check</command> with one of the individual
checks listed above, &repmgr; will emit one of the following Nagios-style exit codes checks listed above, &repmgr; will emit one of the following Nagios-style exit codes
(even if <option>--nagios</option> is not supplied): (even if <literal>--nagios</literal> is not supplied):
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">

View File

@@ -22,10 +22,6 @@
This can optionally use <application>pg_rewind</application> to re-integrate This can optionally use <application>pg_rewind</application> to re-integrate
a node which has diverged from the rest of the cluster, typically a failed primary. a node which has diverged from the rest of the cluster, typically a failed primary.
</para> </para>
<para>
Note that <command>repmgr node rejoin</command> can only be used to attach
a standby to the current primary, not another standby.
</para>
<tip> <tip>
<para> <para>
@@ -47,12 +43,7 @@
<programlisting> <programlisting>
repmgr node rejoin -d '$conninfo'</programlisting> repmgr node rejoin -d '$conninfo'</programlisting>
where <literal>$conninfo</literal> is the PostgreSQL <literal>conninfo</literal> string of the where <literal>$conninfo</literal> is the conninfo string of any reachable node in the cluster.
<emphasis>current</emphasis> primary node (or that of any reachable node in the cluster, but
<emphasis>not</emphasis> the local node). This is so that &repmgr; can fetch up-to-date information
about the current state of the cluster.
</para>
<para>
<filename>repmgr.conf</filename> for the stopped node *must* be supplied explicitly if not <filename>repmgr.conf</filename> for the stopped node *must* be supplied explicitly if not
otherwise available. otherwise available.
</para> </para>
@@ -80,7 +71,7 @@
</para> </para>
<para> <para>
It is only necessary to provide the <application>pg_rewind</application> path It is only necessary to provide the <application>pg_rewind</application> path
if using PostgreSQL 9.4, and <application>pg_rewind</application> if using PostgreSQL 9.3 or 9.4, and <application>pg_rewind</application>
is not installed in the PostgreSQL <filename>bin</filename> directory. is not installed in the PostgreSQL <filename>bin</filename> directory.
</para> </para>
</listitem> </listitem>
@@ -216,18 +207,9 @@
a standby to the current primary, not another standby. a standby to the current primary, not another standby.
</para> </para>
<para> <para>
The node's PostgreSQL instance must have been shut down cleanly. If this was not the The node must have been shut down cleanly; if this was not the case, it will
case, it will need to be started up until it has reached a consistent recovery point, need to be manually started (remove any existing <filename>recovery.conf</filename> file first)
then shut down cleanly. until it has reached a consistent recovery point, then shut down cleanly.
</para>
<para>
In PostgreSQL 13 and later, this will be done automatically
if the <option>--force-rewind</option> is provided (even if an actual rewind
is not necessary).
</para>
<para>
With PostgreSQL 12 and earlier, PostgreSQL will need to
be started and shut down manually; see below for the best way to do this.
</para> </para>
<tip> <tip>
<para> <para>
@@ -239,14 +221,11 @@
rm -f /var/lib/pgsql/data/recovery.conf rm -f /var/lib/pgsql/data/recovery.conf
postgres --single -D /var/lib/pgsql/data/ &lt; /dev/null</programlisting> postgres --single -D /var/lib/pgsql/data/ &lt; /dev/null</programlisting>
</para> </para>
<para>
Note that <filename>standby.signal</filename> (PostgreSQL 11 and earlier:
<filename>recovery.conf</filename>) <emphasis>must</emphasis> be removed
from the data directory for PostgreSQL to be able to start in single
user mode.
</para>
</tip> </tip>
<para>
&repmgr; will attempt to verify whether the node can rejoin as-is, or whether
<command>pg_rewind</command> must be used (see following section).
</para>
</refsect1> </refsect1>
<refsect1 id="repmgr-node-rejoin-pg-rewind" xreflabel="Using pg_rewind"> <refsect1 id="repmgr-node-rejoin-pg-rewind" xreflabel="Using pg_rewind">
@@ -262,7 +241,7 @@
<command>repmgr node rejoin</command> can optionally use <command>pg_rewind</command> to re-integrate a <command>repmgr node rejoin</command> can optionally use <command>pg_rewind</command> to re-integrate a
node which has diverged from the rest of the cluster, typically a failed primary. node which has diverged from the rest of the cluster, typically a failed primary.
<command>pg_rewind</command> is available in PostgreSQL 9.5 and later as part of the core distribution, <command>pg_rewind</command> is available in PostgreSQL 9.5 and later as part of the core distribution,
and can be installed from external sources for PostgreSQL 9.4. and can be installed from external sources for PostgreSQL 9.3 and 9.4.
</para> </para>
<note> <note>
<para> <para>
@@ -285,7 +264,6 @@
<programlisting> <programlisting>
$ repmgr node rejoin -f /etc/repmgr.conf -d 'host=node3 dbname=repmgr user=repmgr' \ $ repmgr node rejoin -f /etc/repmgr.conf -d 'host=node3 dbname=repmgr user=repmgr' \
--force-rewind --config-files=postgresql.local.conf,postgresql.conf --verbose --dry-run --force-rewind --config-files=postgresql.local.conf,postgresql.conf --verbose --dry-run
NOTICE: rejoin target is node "node3" (node ID: 3)
INFO: replication connection to the rejoin target node was successful INFO: replication connection to the rejoin target node was successful
INFO: local and rejoin target system identifiers match INFO: local and rejoin target system identifiers match
DETAIL: system identifier is 6652184002263212600 DETAIL: system identifier is 6652184002263212600
@@ -305,15 +283,7 @@
to execute <command>pg_rewind</command> to ensure the node can be rejoined successfully. to execute <command>pg_rewind</command> to ensure the node can be rejoined successfully.
</para> </para>
<refsect2 id="repmgr-node-rejoin-pg-rewind-config-files" xreflabel="pg_rewind and configuration files"> <important>
<title><command>pg_rewind</command> and configuration file retention</title>
<indexterm>
<primary>pg_rewind</primary>
<secondary>configuration file retention</secondary>
</indexterm>
<para> <para>
Be aware that if <command>pg_rewind</command> is executed and actually performs a Be aware that if <command>pg_rewind</command> is executed and actually performs a
rewind operation, any configuration files in the PostgreSQL data directory will be rewind operation, any configuration files in the PostgreSQL data directory will be
@@ -321,30 +291,19 @@
</para> </para>
<para> <para>
To prevent this happening, provide a comma-separated list of files to retain To prevent this happening, provide a comma-separated list of files to retain
using the <option>--config-file</option> command line option; the specified files using the <literal>--config-file</literal> command line option; the specified files
will be archived in a temporary directory (whose parent directory can be specified with will be archived in a temporary directory (whose parent directory can be specified with
<option>--config-archive-dir</option>, default: <filename>/tmp</filename>) <literal>--config-archive-dir</literal>) and restored once the rewind operation is
and restored once the rewind operation is complete. complete.
</para> </para>
</refsect2> </important>
<refsect2 id="repmgr-node-rejoin-pg-rewind-example" xreflabel="example using repmgr node rejoin and pg_rewind"> <para>
Example, first using <literal>--dry-run</literal>, then actually executing the
<title>Example using <command>repmgr node rejoin</command> and <command>pg_rewind</command></title> <literal>node rejoin command</literal>.
<programlisting>
<indexterm>
<primary>pg_rewind</primary>
<secondary>configuration file retention</secondary>
</indexterm>
<para>
Example, first using <option>--dry-run</option>, then actually executing the
<literal>node rejoin command</literal>.
<programlisting>
$ repmgr node rejoin -f /etc/repmgr.conf -d 'host=node3 dbname=repmgr user=repmgr' \ $ repmgr node rejoin -f /etc/repmgr.conf -d 'host=node3 dbname=repmgr user=repmgr' \
--config-files=postgresql.local.conf,postgresql.conf --verbose --force-rewind --dry-run --config-files=postgresql.local.conf,postgresql.conf --verbose --force-rewind --dry-run
NOTICE: rejoin target is node "node3" (node ID: 3)
INFO: replication connection to the rejoin target node was successful INFO: replication connection to the rejoin target node was successful
INFO: local and rejoin target system identifiers match INFO: local and rejoin target system identifiers match
DETAIL: system identifier is 6652460429293670710 DETAIL: system identifier is 6652460429293670710
@@ -358,17 +317,17 @@
pg_rewind -D '/var/lib/postgresql/data' --source-server='host=node3 dbname=repmgr user=repmgr' pg_rewind -D '/var/lib/postgresql/data' --source-server='host=node3 dbname=repmgr user=repmgr'
INFO: prerequisites for executing NODE REJOIN are met</programlisting> INFO: prerequisites for executing NODE REJOIN are met</programlisting>
<note> <note>
<para> <para>
If <option>--force-rewind</option> is used with the <option>--dry-run</option> option, If <option>--force-rewind</option> is used with the <option>--dry-run</option> option,
this checks the prerequisites for using <application>pg_rewind</application>, but is this checks the prerequisites for using <application>pg_rewind</application>, but is
not an absolute guarantee that actually executing <application>pg_rewind</application> not an absolute guarantee that actually executing <application>pg_rewind</application>
will succeed. See also section <xref linkend="repmgr-node-rejoin-caveats"/> below. will succeed. See also section <xref linkend="repmgr-node-rejoin-caveats"/> below.
</para> </para>
</note> </note>
<programlisting> <programlisting>
$ repmgr node rejoin -f /etc/repmgr.conf -d 'host=node3 dbname=repmgr user=repmgr' \ $ repmgr node rejoin -f /etc/repmgr.conf -d 'host=node3 dbname=repmgr user=repmgr' \
--config-files=postgresql.local.conf,postgresql.conf --verbose --force-rewind --config-files=postgresql.local.conf,postgresql.conf --verbose --force-rewind
NOTICE: pg_rewind execution required for this node to attach to rejoin target node 3 NOTICE: pg_rewind execution required for this node to attach to rejoin target node 3
@@ -380,8 +339,8 @@
NOTICE: starting server using "pg_ctl -l /var/log/postgres/startup.log -w -D '/var/lib/pgsql/data' start" NOTICE: starting server using "pg_ctl -l /var/log/postgres/startup.log -w -D '/var/lib/pgsql/data' start"
NOTICE: NODE REJOIN successful NOTICE: NODE REJOIN successful
DETAIL: node 2 is now attached to node 3</programlisting> DETAIL: node 2 is now attached to node 3</programlisting>
</para> </para>
</refsect2>
</refsect1> </refsect1>
<refsect1 id="repmgr-node-rejoin-caveats" xreflabel="Caveats"> <refsect1 id="repmgr-node-rejoin-caveats" xreflabel="Caveats">
@@ -397,7 +356,7 @@
<command>repmgr node rejoin</command> attempts to determine whether it will succeed by <command>repmgr node rejoin</command> attempts to determine whether it will succeed by
comparing the timelines and relative WAL positions of the local node (rejoin candidate) and primary comparing the timelines and relative WAL positions of the local node (rejoin candidate) and primary
(rejoin target). This is particularly important if planning to use <application>pg_rewind</application>, (rejoin target). This is particularly important if planning to use <application>pg_rewind</application>,
which currently (as of PostgreSQL 12) may appear to succeed (or indicate there is no action which currently (as of PostgreSQL 11) may appear to succeed (or indicate there is no action
needed) but potentially allow an impossible action, such as trying to rejoin a standby to a needed) but potentially allow an impossible action, such as trying to rejoin a standby to a
primary which is behind the standby. &repmgr; will prevent this situation from occurring. primary which is behind the standby. &repmgr; will prevent this situation from occurring.
</para> </para>
@@ -410,11 +369,6 @@
the current standby's PostgreSQL log will contain entries with the text the current standby's PostgreSQL log will contain entries with the text
&quot;<literal>record with incorrect prev-link</literal>&quot;. &quot;<literal>record with incorrect prev-link</literal>&quot;.
</para> </para>
<para>
In PostgreSQL 9.5 and earlier, it is <emphasis>not</emphasis> possible to use
<application>pg_rewind</application> to attach to a target node with a lower
timeline than the local node.
</para>
<para> <para>
We strongly recommend running <command>repmgr node rejoin</command> with the We strongly recommend running <command>repmgr node rejoin</command> with the
<option>--dry-run</option> option first. Additionally it might be a good idea <option>--dry-run</option> option first. Additionally it might be a good idea
@@ -424,52 +378,6 @@
is running in <option>--dry-run</option> mode. is running in <option>--dry-run</option> mode.
</para> </para>
<warning>
<para>
In all current PostgreSQL versions (as of September 2020), <application>pg_rewind</application>
contains a corner-case bug which affects standbys in a very specific situation.
</para>
<para>
This situation occurs when a standby was shut down <emphasis>before</emphasis> its
primary node, and an attempt is made to attach this standby to another primary
in the same cluster (following a &quot;split brain&quot; situation where the standby
was connected to the wrong primary). In this case, &repmgr; will correctly determine
that <application>pg_rewind</application> should be executed, however
<application>pg_rewind</application> incorrectly decides that no action is necessary.
</para>
<para>
In this situation, &repmgr; will report something like:
<programlisting>
NOTICE: pg_rewind execution required for this node to attach to rejoin target node 1
DETAIL: rejoin target server's timeline 3 forked off current database system timeline 2 before current recovery point 0/7019C10</programlisting>
but when executed, <application>pg_rewind</application> will report:
<programlisting>
pg_rewind: servers diverged at WAL location 0/7015540 on timeline 2
pg_rewind: no rewind required</programlisting>
and if an attempt is made to attach the standby to the new primary, PostgreSQL logs on the standby
will contain errors like:
<programlisting>
[2020-09-07 15:01:41 UTC] LOG: 00000: replication terminated by primary server
[2020-09-07 15:01:41 UTC] DETAIL: End of WAL reached on timeline 2 at 0/7015540.
[2020-09-07 15:01:41 UTC] LOG: 00000: new timeline 3 forked off current database system timeline 2 before current recovery point 0/7019C10</programlisting>
</para>
<para>
Currently it is not possible to resolve this situation using <application>pg_rewind</application>.
A <ulink url="https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=2b4f3130382fe2f8705863e4d38589d4d69cd695">patch</ulink>
has been successfully submitted and will be included the next PostgreSQL minor release round, scheduled for
February 2021.
</para>
<para>
As a workaround, start the primary server the standby was previously attached to,
and ensure the standby can be attached to it. If <application>pg_rewind</application> was actually executed,
it will have copied in the <filename>.history</filename> file from the target primary server; this must
be removed. <command>repmgr node rejoin</command> can then be used to attach the standby to the original
primary. Ensure any changes pending on the primary have propagated to the standby. Then shut down the primary
server <emphasis>first</emphasis>, before shutting down the standby. It should then be possible to
use <command>repmgr node rejoin</command> to attach the standby to the new primary.
</para>
</warning>
</refsect1> </refsect1>
<refsect1> <refsect1>

View File

@@ -75,22 +75,8 @@
<para> <para>
Issue a <command>CHECKPOINT</command> before stopping or restarting the node. Issue a <command>CHECKPOINT</command> before stopping or restarting the node.
</para> </para>
<para>
Note that a superuser connection is required to be able to execute the
<command>CHECKPOINT</command> command.
</para>
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term><option>-S</option>/<option>--superuser</option></term>
<listitem>
<para>
Connect as the named superuser instead of the normal &repmgr; user.
</para>
</listitem>
</varlistentry>
</variablelist> </variablelist>
</refsect1> </refsect1>
@@ -128,38 +114,38 @@
<para> <para>
See what action would be taken for a restart: See what action would be taken for a restart:
<programlisting> <programlisting>
[postgres@node1 ~]$ repmgr -f /etc/repmgr/12/repmgr.conf node service --action=restart --checkpoint --dry-run [postgres@node1 ~]$ repmgr -f /etc/repmgr/11/repmgr.conf node service --action=restart --checkpoint --dry-run
INFO: a CHECKPOINT would be issued here INFO: a CHECKPOINT would be issued here
INFO: would execute server command "sudo service postgresql-12 restart"</programlisting> INFO: would execute server command "sudo service postgresql-11 restart"</programlisting>
</para> </para>
<para> <para>
Restart the PostgreSQL instance: Restart the PostgreSQL instance:
<programlisting> <programlisting>
[postgres@node1 ~]$ repmgr -f /etc/repmgr/12/repmgr.conf node service --action=restart --checkpoint [postgres@node1 ~]$ repmgr -f /etc/repmgr/11/repmgr.conf node service --action=restart --checkpoint
NOTICE: issuing CHECKPOINT NOTICE: issuing CHECKPOINT
DETAIL: executing server command "sudo service postgresql-12 restart" DETAIL: executing server command "sudo service postgresql-11 restart"
Redirecting to /bin/systemctl restart postgresql-12.service</programlisting> Redirecting to /bin/systemctl restart postgresql-11.service</programlisting>
</para> </para>
<para> <para>
List all commands: List all commands:
<programlisting> <programlisting>
[postgres@node1 ~]$ repmgr -f /etc/repmgr/12/repmgr.conf node service --list-actions [postgres@node1 ~]$ repmgr -f /etc/repmgr/11/repmgr.conf node service --list-actions
Following commands would be executed for each action: Following commands would be executed for each action:
start: "sudo service postgresql-12 start" start: "sudo service postgresql-11 start"
stop: "sudo service postgresql-12 stop" stop: "sudo service postgresql-11 stop"
restart: "sudo service postgresql-12 restart" restart: "sudo service postgresql-11 restart"
reload: "sudo service postgresql-12 reload" reload: "sudo service postgresql-11 reload"
promote: "/usr/pgsql-12/bin/pg_ctl -w -D '/var/lib/pgsql/12/data' promote"</programlisting> promote: "/usr/pgsql-11/bin/pg_ctl -w -D '/var/lib/pgsql/11/data' promote"</programlisting>
</para> </para>
<para> <para>
List a single command: List a single command:
<programlisting> <programlisting>
[postgres@node1 ~]$ repmgr -f /etc/repmgr/12/repmgr.conf node service --list-actions --action=promote [postgres@node1 ~]$ repmgr -f /etc/repmgr/11/repmgr.conf node service --list-actions --action=promote
/usr/pgsql-12/bin/pg_ctl -w -D '/var/lib/pgsql/12/data' promote </programlisting> /usr/pgsql-11/bin/pg_ctl -w -D '/var/lib/pgsql/11/data' promote </programlisting>
</para> </para>
</refsect1> </refsect1>
</refentry> </refentry>

View File

@@ -24,15 +24,10 @@
<note> <note>
<para> <para>
&repmgr; will attempt to install the &repmgr; extension as part of this command, It's possibly to install the &repmgr; extension manually before executing
however this will fail if the <literal>repmgr</literal> user is not a superuser.
</para>
<para>
It's possible to install the &repmgr; extension manually before executing
<command>repmgr primary register</command>; in this case &repmgr; will <command>repmgr primary register</command>; in this case &repmgr; will
detect the presence of the extension and skip that step. detect the presence of the extension and skip that step.
</para> </para>
</note> </note>
</refsect1> </refsect1>
@@ -64,21 +59,6 @@
</refsect1> </refsect1>
<refsect1>
<title>User permission requirements</title>
<para>
The <literal>repmgr</literal> user must be a superuser in order for &repmgr;
to be able to install the <literal>repmgr</literal> extension.
</para>
<para>
If this is not the case, the <literal>repmgr</literal> extension can be installed
manually before executing <command>repmgr primary register</command>.
</para>
<para>
A future &repmgr; release will enable the provision of a <option>--superuser</option>
name for the installation of the extension.
</para>
</refsect1>
<refsect1> <refsect1>
<title>Options</title> <title>Options</title>

View File

@@ -60,17 +60,6 @@
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term><option>--force</option></term>
<listitem>
<para>
Forcibly unregister the node if it is registered as an active primary,
as long as it has no registered standbys; or if it is registered as
a primary but running as a standby.
</para>
</listitem>
</varlistentry>
</variablelist> </variablelist>
</refsect1> </refsect1>

View File

@@ -18,7 +18,7 @@
<para> <para>
<command>repmgr standby clone</command> clones a PostgreSQL node from another <command>repmgr standby clone</command> clones a PostgreSQL node from another
PostgreSQL node, typically the primary, but optionally from any other node in PostgreSQL node, typically the primary, but optionally from any other node in
the cluster or from Barman. It creates the replication configuration required the cluster or from Barman. It creates the <filename>recovery.conf</filename> file required
to attach the cloned node to the primary node (or another standby, if cascading replication to attach the cloned node to the primary node (or another standby, if cascading replication
is in use). is in use).
</para> </para>
@@ -85,25 +85,28 @@
</refsect1> </refsect1>
<refsect1 id="repmgr-standby-clone-recovery-conf"> <refsect1 id="repmgr-standby-clone-recovery-conf">
<title>Customising replication configuration</title> <title>Customising recovery.conf</title>
<indexterm> <indexterm>
<primary>recovery.conf</primary> <primary>recovery.conf</primary>
<secondary>customising with &quot;repmgr standby clone&quot;</secondary> <secondary>customising with &quot;repmgr standby clone&quot;</secondary>
</indexterm> </indexterm>
<indexterm>
<primary>replication configuration</primary>
<secondary>customising with &quot;repmgr standby clone&quot;</secondary>
</indexterm>
<para> <para>
By default, &repmgr; will create a minimal replication configuration By default, &repmgr; will create a minimal <filename>recovery.conf</filename>
containing following parameters: containing following parameters:
</para> </para>
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara><varname>standby_mode</varname> (always <literal>'on'</literal>)</simpara>
</listitem>
<listitem>
<simpara><varname>recovery_target_timeline</varname> (always <literal>'latest'</literal>)</simpara>
</listitem>
<listitem> <listitem>
<simpara><varname>primary_conninfo</varname></simpara> <simpara><varname>primary_conninfo</varname></simpara>
</listitem> </listitem>
@@ -114,24 +117,9 @@
</itemizedlist> </itemizedlist>
<para>
For PostgreSQL 11 and earlier, these parameters will also be set:
</para>
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara><varname>standby_mode</varname> (always <literal>'on'</literal>)</simpara>
</listitem>
<listitem>
<simpara><varname>recovery_target_timeline</varname> (always <literal>'latest'</literal>)</simpara>
</listitem>
</itemizedlist>
<para> <para>
The following additional parameters can be specified in <filename>repmgr.conf</filename> The following additional parameters can be specified in <filename>repmgr.conf</filename>
for inclusion in the replication configuration: for inclusion in <filename>recovery.conf</filename>:
</para> </para>
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">
@@ -182,10 +170,7 @@
<programlisting> <programlisting>
pg_basebackup_options='--wal-method=fetch'</programlisting> pg_basebackup_options='--wal-method=fetch'</programlisting>
and ensure that <literal>wal_keep_segments</literal> (PostgreSQL 13 and later: and ensure that <literal>wal_keep_segments</literal> is set to an appropriately high value.
<literal>wal_keep_size</literal>) is set to an appropriately high value. Note
however that this is not a particularly reliable way of ensuring sufficient
WAL is retained and is not recommended.
See the <ulink url="https://www.postgresql.org/docs/current/app-pgbasebackup.html"> See the <ulink url="https://www.postgresql.org/docs/current/app-pgbasebackup.html">
pg_basebackup</ulink> documentation for details. pg_basebackup</ulink> documentation for details.
</para> </para>
@@ -198,35 +183,11 @@
</note> </note>
</refsect1> </refsect1>
<refsect1 id="repmgr-standby-clone-wal-directory">
<title>Placing WAL files into a different directory</title>
<para>
To ensure that WAL files are placed in a directory outside of the main data
directory (e.g. to keep them on a separate disk for performance reasons),
specify the location with <option>--waldir</option>
(PostgreSQL 9.6 and earlier: <option>--xlogdir</option>) in
the <filename>repmgr.conf</filename> parameter <option>pg_basebackup_options</option>,
e.g.:
<programlisting>
pg_basebackup_options='--waldir=/path/to/wal-directory'</programlisting>
This setting will also be honored by &repmgr; when cloning from Barman
(&repmgr; 5.2 and later).
</para>
</refsect1>
<!-- don't rename this id as it may be used in external links -->
<refsect1 id="repmgr-standby-create-recovery-conf"> <refsect1 id="repmgr-standby-create-recovery-conf">
<title>Using a standby cloned by another method</title> <title>Using a standby cloned by another method</title>
<indexterm>
<primary>replication configuration</primary>
<secondary>generating for a standby cloned by another method</secondary>
</indexterm>
<indexterm> <indexterm>
<primary>recovery.conf</primary> <primary>recovery.conf</primary>
<secondary>generating for a standby cloned by another method</secondary> <secondary>generating for a standby cloned by another method</secondary>
@@ -234,55 +195,34 @@ pg_basebackup_options='--waldir=/path/to/wal-directory'</programlisting>
<para> <para>
&repmgr; supports standbys cloned by another method (e.g. using <application>barman</application>'s &repmgr; supports standbys cloned by another method (e.g. using <application>barman</application>'s
<command><ulink url="https://docs.pgbarman.org/#recover">barman recover</ulink></command> command). <command><ulink url="http://docs.pgbarman.org/release/2.5/#recover">barman recover</ulink></command> command).
</para> </para>
<para> <para>
To integrate the standby as a &repmgr; node, once the standby has been cloned, To integrate the standby as a &repmgr; node, once the standby has been cloned,
ensure the <filename>repmgr.conf</filename> ensure the <filename>repmgr.conf</filename>
file is created for the node, and that it has been registered using file is created for the node, and that it has been registered using
<command><link linkend="repmgr-standby-register">repmgr standby register</link></command>. <command><link linkend="repmgr-standby-register">repmgr standby register</link></command>.
</para> Then execute the command <command>repmgr standby clone --recovery-conf-only</command>.
<tip>
<para>
To register a standby which is not running, execute
<link linkend="repmgr-standby-register">repmgr standby register --force</link>
and provide the connection details for the primary.
</para>
<para>
See <xref linkend="repmgr-standby-register-inactive-node"/> for more details.
</para>
</tip>
<para>
Then execute the command <command>repmgr standby clone --replication-conf-only</command>.
This will create the <filename>recovery.conf</filename> file needed to attach This will create the <filename>recovery.conf</filename> file needed to attach
the node to its upstream (in PostgreSQL 12 and later: append replication configuration the node to its upstream, and will also create a replication slot on the
to <filename>postgresql.auto.conf</filename>), and will also create a replication slot on the
upstream node if required. upstream node if required.
</para> </para>
<para> <para>
The upstream node must be running so the correct replication configuration can be obtained. Note that the upstream node must be running. An existing
</para> <filename>recovery.conf</filename> will not be overwritten unless the
<para>
If the standby is running, the replication configuration will not be written unless the
<option>-F/--force</option> option is provided. <option>-F/--force</option> option is provided.
</para> </para>
<tip>
<para>
Execute <command>repmgr standby clone --replication-conf-only --dry-run</command>
to check the prerequisites for creating the recovery configuration,
and display the configuration changes which would be made without actually
making any changes.
</para>
</tip>
<para> <para>
In PostgreSQL 13 and later, the PostgreSQL configuration must be reloaded for replication Execute <command>repmgr standby clone --recovery-conf-only --dry-run</command>
configuration changes to take effect. to check the prerequisites for creating the <filename>recovery.conf</filename> file,
</para> and display the contents of the file without actually creating it.
<para>
In PostgreSQL 12 and earlier, the PostgreSQL instance must be restarted for replication
configuration changes to take effect.
</para> </para>
<note>
<para>
<option>--recovery-conf-only</option> was introduced in &repmgr; <link linkend="release-4.0.4">4.0.4</link>.
</para>
</note>
</refsect1> </refsect1>
@@ -308,9 +248,9 @@ pg_basebackup_options='--waldir=/path/to/wal-directory'</programlisting>
Check prerequisites but don't actually clone the standby. Check prerequisites but don't actually clone the standby.
</para> </para>
<para> <para>
If <option>--replication-conf-only</option> specified, the contents of If <option>--recovery-conf-only</option> specified, the contents of
the generated recovery configuration will be displayed the generated <filename>recovery.conf</filename> file will be displayed
but not written. but the file itself not written.
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
@@ -344,25 +284,6 @@ pg_basebackup_options='--waldir=/path/to/wal-directory'</programlisting>
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term><option>--recovery-min-apply-delay</option></term>
<listitem>
<para>
Set PostgreSQL configuration <option>recovery_min_apply_delay</option> parameter
to the provided value.
</para>
<para>
This overrides any <option>recovery_min_apply_delay</option> provided via
<filename>repmgr.conf</filename>.
</para>
<para>
For more details on this parameter, see:
<ulink url="https://www.postgresql.org/docs/current/runtime-config-replication.html#GUC-RECOVERY-MIN-APPLY-DELAY">recovery_min_apply_delay</ulink>.
</para>
</listitem>
</varlistentry>
<varlistentry> <varlistentry>
<term><option>-R, --remote-user=USERNAME</option></term> <term><option>-R, --remote-user=USERNAME</option></term>
<listitem> <listitem>
@@ -373,19 +294,11 @@ pg_basebackup_options='--waldir=/path/to/wal-directory'</programlisting>
</varlistentry> </varlistentry>
<varlistentry> <varlistentry>
<term><option>--replication-conf-only</option></term> <term><option> --recovery-conf-only</option></term>
<listitem> <listitem>
<para> <para>
Create recovery configuration for a previously cloned instance. Create <filename>recovery.conf</filename> file for a previously cloned instance. &repmgr; 4.0.4 and later.
</para> </para>
<para>
In PostgreSQL 12 and later, the replication configuration will be
written to <filename>postgresql.auto.conf</filename>.
</para>
<para>
In PostgreSQL 11 and earlier, the replication configuration will be
written to <filename>recovery.conf</filename>.
</para>
</listitem> </listitem>
</varlistentry> </varlistentry>
@@ -413,7 +326,7 @@ pg_basebackup_options='--waldir=/path/to/wal-directory'</programlisting>
<term><option>--upstream-conninfo</option></term> <term><option>--upstream-conninfo</option></term>
<listitem> <listitem>
<para> <para>
<literal>primary_conninfo</literal> value to include in the recovery configuration <literal>primary_conninfo</literal> value to write in <filename>recovery.conf</filename>
when the intended upstream server does not yet exist. when the intended upstream server does not yet exist.
</para> </para>
<para> <para>
@@ -431,23 +344,6 @@ pg_basebackup_options='--waldir=/path/to/wal-directory'</programlisting>
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term><option>--verify-backup</option></term>
<listitem>
<para>
<!-- update link after Pg13 release -->
Verify a cloned node using the
<ulink url="https://www.postgresql.org/docs/13/app-pgverifybackup.html">pg_verifybackup</ulink>
utility (PostgreSQL 13 and later).
</para>
<para>
This option can currently only be used when cloning directly from an upstream
node.
</para>
</listitem>
</varlistentry>
<varlistentry> <varlistentry>
<term><option>--without-barman </option></term> <term><option>--without-barman </option></term>
<listitem> <listitem>

View File

@@ -47,15 +47,7 @@
</para> </para>
<para> <para>
In PostgreSQL 12 and earlier, this command will force a restart of PostgreSQL on the standby node. This command will force a restart of PostgreSQL on the standby node.
</para>
<para>
In PostgreSQL 13 and later, by default this command will signal PostgreSQL to reload its
configuration, which will cause PostgreSQL to follow the new upstream without
a restart. If this behaviour is not desired for whatever reason, the configuration
file parameter <varname>standby_follow_restart</varname> can be set <literal>true</literal>
to always force a restart.
</para> </para>
<para> <para>
@@ -179,7 +171,7 @@
be possible to follow the new upstream node, and &repmgr; will emit an error be possible to follow the new upstream node, and &repmgr; will emit an error
message like this: message like this:
<programlisting> <programlisting>
ERROR: this node cannot attach to follow target node &quot;node3&quot; (ID 3) ERROR: this node cannot attach to follow target node 3
DETAIL: follow target server's timeline 2 forked off current database system timeline 1 before current recovery point 0/6108880</programlisting> DETAIL: follow target server's timeline 2 forked off current database system timeline 1 before current recovery point 0/6108880</programlisting>
</para> </para>
<para> <para>

View File

@@ -23,8 +23,7 @@
<important> <important>
<para> <para>
If &repmgrd; is active, you must execute If &repmgrd; is active, you must execute
<command><link linkend="repmgr-service-pause">repmgr service pause</link></command> <command><link linkend="repmgr-daemon-pause">repmgr daemon pause</link></command>
(&repmgr; 4.2 - 4.4: <command><link linkend="repmgr-service-pause">repmgr service pause</link></command>)
to temporarily disable &repmgrd; while making any changes to temporarily disable &repmgrd; while making any changes
to the replication cluster. to the replication cluster.
</para> </para>
@@ -66,10 +65,10 @@
Both values can be defined in <filename>repmgr.conf</filename>. Both values can be defined in <filename>repmgr.conf</filename>.
</para> </para>
<warning> <note>
<para> <para>
In PostgreSQL 12 and earlier, if WAL replay is paused on the standby, and not all If WAL replay is paused on the standby, and not all WAL files on the standby have been
WAL files on the standby have been replayed, &repmgr; will not attempt to promote it. replayed, &repmgr; will not attempt to promote it.
</para> </para>
<para> <para>
This is because if WAL replay is paused, PostgreSQL itself will not react to a promote command This is because if WAL replay is paused, PostgreSQL itself will not react to a promote command
@@ -81,15 +80,11 @@
Note that if the standby is in archive recovery, &repmgr; will not be able to determine Note that if the standby is in archive recovery, &repmgr; will not be able to determine
if more WAL is pending replay, and will abort the promotion attempt if WAL replay is paused. if more WAL is pending replay, and will abort the promotion attempt if WAL replay is paused.
</para> </para>
<para> </note>
This restriction does <emphasis>not</emphasis> apply to PostgreSQL 13 and later.
</para>
</warning>
</refsect1> </refsect1>
<refsect1> <refsect1>
<title>Example</title> <title>Example</title>
<para> <para>
@@ -98,46 +93,13 @@
NOTICE: promoting standby to primary NOTICE: promoting standby to primary
DETAIL: promoting server "node2" (ID: 2) using "pg_ctl -l /var/log/postgres/startup.log -w -D '/var/lib/postgres/data' promote" DETAIL: promoting server "node2" (ID: 2) using "pg_ctl -l /var/log/postgres/startup.log -w -D '/var/lib/postgres/data' promote"
server promoting server promoting
DEBUG: setting node 2 as primary and marking existing primary as failed
NOTICE: STANDBY PROMOTE successful NOTICE: STANDBY PROMOTE successful
DETAIL: server "node2" (ID: 2) was successfully promoted to primary</programlisting> DETAIL: server "node2" (ID: 2) was successfully promoted to primary</programlisting>
</para> </para>
</refsect1> </refsect1>
<refsect1>
<title>User permission requirements</title>
<para><emphasis>pg_promote() (PostgreSQL 12 and later)</emphasis></para>
<para>
From PostgreSQL 12, &repmgr; will attempt to use the built-in <function>pg_promote()</function>
function to promote a standby to primary.
</para>
<para>
By default, execution of <function>pg_promote()</function> is restricted to superusers.
If the <literal>repmgr</literal> user does not have permission to execute
<function>pg_promote()</function>, &repmgr; will fall back to using &quot;<command>pg_ctl promote</command>&quot;.
</para>
<tip>
<para>
Execute <command>repmgr standby promote</command> with the <option>--dry-run</option>
to check whether the &repmgr; user has permission to execute <function>pg_promote()</function>.
</para>
<para>
If the <literal>repmgr</literal> user is not a superuser, execution permission for this
function can be granted with e.g.:
<programlisting>
GRANT EXECUTE ON FUNCTION pg_catalog.pg_promote TO repmgr</programlisting>
</para>
<para>
Note that permissions are only effective for the database they are granted in, so
this <emphasis>must</emphasis> be executed in the &repmgr; database to be effective.
</para>
</tip>
<para>
For more details on <function>pg_promote()</function>, see the
<ulink url="https://www.postgresql.org/docs/current/functions-admin.html#FUNCTIONS-RECOVERY-CONTROL-TABLE">PostgreSQL documentation</ulink>.
</para>
</refsect1>
<refsect1> <refsect1>
<title>Options</title> <title>Options</title>
<variablelist> <variablelist>
@@ -172,42 +134,6 @@
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term><option>-F</option></term>
<term><option>--force</option></term>
<listitem>
<para>
Ignore warnings and continue anyway.
</para>
<para>
This option is relevant in the following situations if <option>--siblings-follow</option> was specified:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
If one or more sibling nodes was not reachable via SSH, the standby will be promoted anyway.
</simpara>
</listitem>
<listitem>
<simpara>
If the promotion candidate has insufficient free walsenders to accommodate the standbys which will
be attached to it, the standby will be promoted anyway.
</simpara>
</listitem>
<listitem>
<simpara>
If replication slots are in use but the promotion candidate has insufficient free replication slots
to accommodate the standbys which will be attached to it, the standby will be promoted anyway.
</simpara>
</listitem>
</itemizedlist>
</para>
<para>
Note that if the <option>-F</option>/<option>--force</option> option is used when any of the above
situations is encountered, the onus is on the user to manually resolve any resulting issues.
</para>
</listitem>
</varlistentry>
</variablelist> </variablelist>
</refsect1> </refsect1>
@@ -245,23 +171,6 @@
</simpara> </simpara>
</listitem> </listitem>
<listitem>
<indexterm>
<primary>service_promote_command</primary>
<secondary>with &quot;repmgr standby promote &quot;</secondary>
</indexterm>
<simpara>
<literal>service_promote_command</literal>:
a command which will be executed instead of <command>pg_ctl promote</command>
or (in PostgreSQL 12 and later) <function>pg_promote()</function>.
</simpara>
<simpara>
This is intended for systems which provide a package-level promote command,
such as Debian's <application>pg_ctlcluster</application>, to promote the
PostgreSQL from standby to primary.
</simpara>
</listitem>
</itemizedlist> </itemizedlist>
</para> </para>

View File

@@ -75,22 +75,10 @@
<para> <para>
Under some circumstances you may wish to register a standby which is not Under some circumstances you may wish to register a standby which is not
yet running; this can be the case when using provisioning tools to create yet running; this can be the case when using provisioning tools to create
a complex replication cluster, or if the node was not cloned by &repmgr;. a complex replication cluster. In this case, by using the <option>-F/--force</option>
</para>
<para>
In this case, by using the <option>-F/--force</option>
option and providing the connection parameters to the primary server, option and providing the connection parameters to the primary server,
the standby can be registered even if it has not yet been started. the standby can be registered.
</para> </para>
<tip>
<para>
Connection parameters can either be provided either as a <literal>conninfo</literal> string
(e.g. <option>-d 'host=node1 user=repmgr'</option> or as individual connection parameters
(<option>-h/--host</option>, <option>-d/--dbname</option>,
<option>-U/--user</option>, <option>-p/--port</option> etc.).
</para>
</tip>
<para> <para>
Similarly, with cascading replication it may be necessary to register Similarly, with cascading replication it may be necessary to register
a standby whose upstream node has not yet been registered - in this case, a standby whose upstream node has not yet been registered - in this case,
@@ -108,11 +96,9 @@
<title>Registering a node not cloned by repmgr</title> <title>Registering a node not cloned by repmgr</title>
<para> <para>
If you've cloned a standby using another method (e.g. <application>barman</application>'s If you've cloned a standby using another method (e.g. <application>barman</application>'s
<command><ulink url="https://docs.pgbarman.org/#recover">barman recover</ulink></command> <command>barman recover</command> command), first execute
command), register the node as detailed in section <link linkend="repmgr-standby-create-recovery-conf">repmgr standby clone --recovery-conf-only</link>
<xref linkend="repmgr-standby-register-inactive-node"/> then execute to add the <filename>recovery.conf</filename> file, then register the standby as usual.
<link linkend="repmgr-standby-create-recovery-conf">repmgr standby clone --replication-conf-only</link>
to generate the appropriate replication configuration.
</para> </para>
</refsect1> </refsect1>
@@ -133,7 +119,7 @@
<varlistentry> <varlistentry>
<term><option>-F</option>/<option>--force</option></term> <term><option>-F</option><option>--force</option></term>
<listitem> <listitem>
<para> <para>
Overwrite an existing node record Overwrite an existing node record

View File

@@ -63,38 +63,6 @@
</refsect1> </refsect1>
<refsect1> <refsect1>
<title>User permission requirements</title>
<para><emphasis>CHECKPOINT</emphasis></para>
<para>
&repmgr; executes <command>CHECKPOINT</command> on the demotion candidate as part of the shutdown
process to ensure it shuts down as smoothly as possible.
</para>
<para>
Note that <command>CHECKPOINT</command> requires database superuser permissions to execute.
If the <literal>repmgr</literal> user is not a superuser, the name of a superuser should be
provided with the <option>-S</option>/<option>--superuser</option>.
</para>
<para>
If &repmgr; is unable to execute the <command>CHECKPOINT</command> command, the switchover
can still be carried out, albeit at a greater risk that the demotion candidate may not
be able to shut down as smoothly as might otherwise have been the case.
</para>
<para><emphasis>pg_promote() (PostgreSQL 12 and later)</emphasis></para>
<para>
From PostgreSQL 12, &repmgr; defaults to using the built-in <command>pg_promote()</command> function to
promote a standby to primary.
</para>
<para>
Note that execution of <function>pg_promote()</function> is restricted to superusers or to
any user who has been granted execution permission for this function. If the &repmgr; user
is not permitted to execute <function>pg_promote()</function>, &repmgr; will fall back to using
&quot;<command>pg_ctl promote</command>&quot;. For more details see
<link linkend="repmgr-standby-promote">repmgr standby promote</link>.
</para>
</refsect1>
<refsect1>
<title>Options</title> <title>Options</title>
<variablelist> <variablelist>
@@ -147,7 +115,7 @@
<para> <para>
Use <application>pg_rewind</application> to reintegrate the old primary if necessary Use <application>pg_rewind</application> to reintegrate the old primary if necessary
(and the prerequisites for using <application>pg_rewind</application> are met). (and the prerequisites for using <application>pg_rewind</application> are met).
If using PostgreSQL 9.4, and the <application>pg_rewind</application> If using PostgreSQL 9.3 or 9.4, and the <application>pg_rewind</application>
binary is not installed in the PostgreSQL <filename>bin</filename> directory, binary is not installed in the PostgreSQL <filename>bin</filename> directory,
provide its full path. For more details see also <xref linkend="switchover-pg-rewind"/>. provide its full path. For more details see also <xref linkend="switchover-pg-rewind"/>.
</para> </para>
@@ -216,17 +184,6 @@
</note> </note>
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term><option>-S</option>/<option>--superuser</option></term>
<listitem>
<para>
Use the named superuser instead of the normal &repmgr; user to perform
actions requiring superuser permissions.
</para>
</listitem>
</varlistentry>
</variablelist> </variablelist>
</refsect1> </refsect1>

View File

@@ -63,34 +63,6 @@
</refsect1> </refsect1>
<refsect1>
<title>Options</title>
<variablelist>
<varlistentry>
<term><option>--dry-run</option></term>
<listitem>
<para>
Check prerequisites but don't actually register the witness
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-F</option>/<option>--force</option></term>
<listitem>
<para>
Overwrite an existing node record
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id="repmgr-witness-register-events"> <refsect1 id="repmgr-witness-register-events">
<title>Event notifications</title> <title>Event notifications</title>
<para> <para>

View File

@@ -18,7 +18,7 @@
<title>repmgr &repmgrversion; Documentation</title> <title>repmgr &repmgrversion; Documentation</title>
<bookinfo> <bookinfo>
<corpauthor>EnterpriseDB Corporation</corpauthor> <corpauthor>2ndQuadrant Ltd</corpauthor>
<productname>repmgr</productname> <productname>repmgr</productname>
<productnumber>&repmgrversion;</productnumber> <productnumber>&repmgrversion;</productnumber>
&legal; &legal;
@@ -26,7 +26,7 @@
<abstract> <abstract>
<para> <para>
This is the official documentation of &repmgr; &repmgrversion; for This is the official documentation of &repmgr; &repmgrversion; for
use with PostgreSQL 9.4 - PostgreSQL 14. use with PostgreSQL 9.3 - PostgreSQL 11.
</para> </para>
<para> <para>
&repmgr; is being continually developed and we strongly recommend using the &repmgr; is being continually developed and we strongly recommend using the
@@ -38,20 +38,20 @@
<para> <para>
&repmgr; is developed by &repmgr; is developed by
<ulink url="https://2ndquadrant.com">2ndQuadrant (EDB)</ulink> <ulink url="https://2ndquadrant.com">2ndQuadrant</ulink>
along with contributions from other individuals and organisations. along with contributions from other individuals and organisations.
Contributions from the community are appreciated and welcome - get Contributions from the community are appreciated and welcome - get
in touch via <ulink url="https://github.com/EnterpriseDB/repmgr">github</ulink> in touch via <ulink url="https://github.com/2ndQuadrant/repmgr">github</ulink>
or <ulink url="https://groups.google.com/group/repmgr">the mailing list/forum</ulink>. or <ulink url="https://groups.google.com/group/repmgr">the mailing list/forum</ulink>.
Multiple 2ndQuadrant (EDB) customers contribute funding Multiple 2ndQuadrant customers contribute funding
to make repmgr development possible. to make repmgr development possible.
</para> </para>
<para> <para>
&repmgr; is fully supported by 2ndQuadrant (EDB)'s &repmgr; is fully supported by 2ndQuadrant's
<ulink url="https://www.2ndquadrant.com/en/support/support-postgresql/">24/7 Production Support</ulink>. <ulink url="https://www.2ndquadrant.com/en/support/support-postgresql/">24/7 Production Support</ulink>.
EnterpriseDB Corporation, a Major Sponsor of the PostgreSQL project, continues to maintain &repmgr;. 2ndQuadrant, a Major Sponsor of the PostgreSQL project, continues to develop and maintain &repmgr;.
We welcome participation from other organisations and individual developers. Other organisations as well as individual developers are welcome to participate in the efforts.
</para> </para>
</abstract> </abstract>
@@ -91,6 +91,7 @@
&repmgrd-automatic-failover; &repmgrd-automatic-failover;
&repmgrd-configuration; &repmgrd-configuration;
&repmgrd-operation; &repmgrd-operation;
&repmgrd-bdr;
</part> </part>
<part id="repmgr-command-reference"> <part id="repmgr-command-reference">
@@ -115,11 +116,11 @@
&repmgr-cluster-crosscheck; &repmgr-cluster-crosscheck;
&repmgr-cluster-event; &repmgr-cluster-event;
&repmgr-cluster-cleanup; &repmgr-cluster-cleanup;
&repmgr-service-status; &repmgr-daemon-status;
&repmgr-service-pause;
&repmgr-service-unpause;
&repmgr-daemon-start; &repmgr-daemon-start;
&repmgr-daemon-stop; &repmgr-daemon-stop;
&repmgr-daemon-pause;
&repmgr-daemon-unpause;
</part> </part>
&appendix-release-notes; &appendix-release-notes;

View File

@@ -192,23 +192,21 @@
connected. Beginning with <link linkend="release-4.4">&repmgr; 4.4</link> connected. Beginning with <link linkend="release-4.4">&repmgr; 4.4</link>
it is now possible for the affected standbys to build a consensus about whether it is now possible for the affected standbys to build a consensus about whether
the primary is still available to some standbys (&quot;primary visibility consensus&quot;). the primary is still available to some standbys (&quot;primary visibility consensus&quot;).
This is done by polling each standby (and the witness, if present) for the time it last saw the This is done by polling each standby for the time it last saw the primary;
primary; if any have seen the primary very recently, it's reasonable if any have seen the primary very recently, it's reasonable
to infer that the primary is still available and a failover should not be started. to infer that the primary is still available and a failover should not be started.
</para> </para>
<para> <para>
The time the primary was last seen by each node can be checked by executing The time the primary was last seen by each node can be checked by executing
<link linkend="repmgr-service-status"><command>repmgr service status</command></link> <link linkend="repmgr-daemon-status"><command>repmgr daemon status</command></link>,
(&repmgr; 4.2 - 4.4: <link linkend="repmgr-service-status"><command>repmgr daemon status</command></link>)
which includes this in its output, e.g.: which includes this in its output, e.g.:
<programlisting>$ repmgr -f /etc/repmgr.conf service status <programlisting>$ repmgr -f /etc/repmgr.conf daemon status
ID | Name | Role | Status | Upstream | repmgrd | PID | Paused? | Upstream last seen ID | Name | Role | Status | Upstream | repmgrd | PID | Paused? | Upstream last seen
----+-------+---------+-----------+----------+---------+-------+---------+-------------------- ----+-------+---------+-----------+----------+---------+-------+---------+--------------------
1 | node1 | primary | * running | | running | 27259 | no | n/a 1 | node1 | primary | * running | | running | 96563 | no | n/a
2 | node2 | standby | running | node1 | running | 27272 | no | 1 second(s) ago 2 | node2 | standby | running | node1 | running | 96572 | no | 1 second(s) ago
3 | node3 | standby | running | node1 | running | 27282 | no | 0 second(s) ago 3 | node3 | standby | running | node1 | running | 96584 | no | 0 second(s) ago</programlisting>
4 | node4 | witness | * running | node1 | running | 27298 | no | 1 second(s) ago</programlisting>
</para> </para>
@@ -269,12 +267,11 @@
<para> <para>
If <option>standby_disconnect_on_failover</option> is set to <literal>true</literal> in If <option>standby_disconnect_on_failover</option> is set to <literal>true</literal> in
<filename>repmgr.conf</filename>, in a failover situation &repmgrd; will forcibly disconnect <filename>repmgr.conf</filename>, in a failover situation &repmgrd; will forcibly disconnect
the local node's WAL receiver, and wait for the WAL receiver on all sibling nodes to be the local node's WAL receiver before making a failover decision.
disconnected, before making a failover decision.
</para> </para>
<note> <note>
<para> <para>
<option>standby_disconnect_on_failover</option> is available with PostgreSQL 9.5 and later. <option>standby_disconnect_on_failover</option> is available from PostgreSQL 9.5 and later.
Additionally this requires that the <literal>repmgr</literal> database user is a superuser. Additionally this requires that the <literal>repmgr</literal> database user is a superuser.
</para> </para>
</note> </note>
@@ -293,12 +290,6 @@
plus however many seconds it takes to confirm the WAL receiver is disconnected before plus however many seconds it takes to confirm the WAL receiver is disconnected before
&repmgrd; proceeds with the failover decision. &repmgrd; proceeds with the failover decision.
</para> </para>
<para>
&repmgrd; will wait up to <option>sibling_nodes_disconnect_timeout</option> seconds (default:
<literal>30</literal>) to confirm that the WAL receiver on all sibling nodes hase been
disconnected before proceding with the failover operation. If the timeout is reached, the
failover operation will go ahead anyway.
</para>
<para> <para>
Following the failover operation, no matter what the outcome, each node will reconnect its WAL receiver. Following the failover operation, no matter what the outcome, each node will reconnect its WAL receiver.
</para> </para>
@@ -331,12 +322,11 @@
To use this, <option>failover_validation_command</option> in <filename>repmgr.conf</filename> To use this, <option>failover_validation_command</option> in <filename>repmgr.conf</filename>
to a script executable by the <literal>postgres</literal> system user, e.g.: to a script executable by the <literal>postgres</literal> system user, e.g.:
<programlisting> <programlisting>
failover_validation_command=/path/to/script.sh %n</programlisting> failover_validation_command=/path/to/script.sh %n %a</programlisting>
</para> </para>
<para> <para>
The <literal>%n</literal> parameter will be replaced with the node ID when the script is The <literal>%n</literal> parameter will be replaced with the node ID, and the
executed. A number of other parameters are also available, see section <literal>%a</literal> parameter will be replaced by the node name when the script is executed.
&quot;<xref linkend="repmgrd-automatic-failover-configuration-optional"/>&quot; for details.
</para> </para>
<para> <para>
This script must return an exit code of <literal>0</literal> to indicate the node should promote itself. This script must return an exit code of <literal>0</literal> to indicate the node should promote itself.
@@ -586,7 +576,7 @@ INFO: node 3 received notification to rerun promotion candidate election
<sect2 id="repmgrd-primary-child-disconnection-caveats"> <sect2 id="repmgrd-primary-child-disconnection-caveats">
<title>Standby disconnections monitoring caveats</title> <title>Standby disconnections monitoring caveats</title>
<para> <para>
The following caveats should be considered if you are intending to use this functionality. The follwing caveats should be considered if you are intending to use this functionality.
</para> </para>
<para> <para>
<itemizedlist mark="bullet"> <itemizedlist mark="bullet">

429
doc/repmgrd-bdr.xml Normal file
View File

@@ -0,0 +1,429 @@
<chapter id="repmgrd-bdr">
<title>BDR failover with repmgrd</title>
<indexterm>
<primary>repmgrd</primary>
<secondary>BDR</secondary>
</indexterm>
<indexterm>
<primary>BDR</primary>
</indexterm>
<para>
&repmgr; 4.x provides support for monitoring a pair of BDR 2.x nodes and taking action in
case one of the nodes fails.
</para>
<note>
<simpara>
Due to the nature of BDR 1.x/2.x, it's only safe to use this solution for
a two-node scenario. Introducing additional nodes will create an inherent
risk of node desynchronisation if a node goes down without being cleanly
removed from the cluster.
</simpara>
</note>
<para>
In contrast to streaming replication, there's no concept of "promoting" a new
primary node with BDR. Instead, "failover" involves monitoring both nodes
with &repmgrd; and redirecting queries from the failed node to the remaining
active node. This can be done by using an
<link linkend="event-notifications">event notification</link> script
which is called by &repmgrd; to dynamically
reconfigure a proxy server/connection pooler such as <application>PgBouncer</application>.
</para>
<note>
<simpara>
This &repmgr; functionality is for BDR 2.x only running on PostgreSQL 9.4/9.6.
It is <emphasis>not</emphasis> required for later BDR versions.
</simpara>
</note>
<sect1 id="bdr-prerequisites" xreflabel="BDR prequisites">
<title>Prerequisites</title>
<important>
<para>
This &repmgr; functionality is for BDR 2.x only running on PostgreSQL 9.4/9.6.
It is <emphasis>not</emphasis> required for later BDR versions.
</para>
</important>
<para>
&repmgr; 4 requires PostgreSQL 9.4 or 9.6 with the BDR 2 extension
enabled and configured for a two-node BDR network. &repmgr; 4 packages
must be installed on each node before attempting to configure
<application>repmgr</application>.
</para>
<note>
<simpara>
&repmgr; 4 will refuse to install if it detects more than two BDR nodes.
</simpara>
</note>
<para>
Application database connections *must* be passed through a proxy server/
connection pooler such as <application>PgBouncer</application>, and it must be possible to dynamically
reconfigure that from &repmgrd;. The example demonstrated in this document
will use <application>PgBouncer</application>
</para>
<para>
The proxy server / connection poolers must <emphasis>not</emphasis>
be installed on the database servers.
</para>
<para>
For this example, it's assumed password-less SSH connections are available
from the PostgreSQL servers to the servers where <application>PgBouncer</application>
runs, and that the user on those servers has permission to alter the
<application>PgBouncer</application> configuration files.
</para>
<para>
PostgreSQL connections must be possible between each node, and each node
must be able to connect to each PgBouncer instance.
</para>
</sect1>
<sect1 id="bdr-configuration" xreflabel="BDR configuration">
<title>Configuration</title>
<para>
A sample configuration for <filename>repmgr.conf</filename> on each
BDR node would look like this:
<programlisting>
# Node information
node_id=1
node_name='node1'
conninfo='host=node1 dbname=bdrtest user=repmgr connect_timeout=2'
data_directory='/var/lib/postgresql/data'
replication_type='bdr'
# Event notification configuration
event_notifications=bdr_failover
event_notification_command='/path/to/bdr-pgbouncer.sh %n %e %s "%c" "%a" >> /tmp/bdr-failover.log 2>&amp;1'
# repmgrd options
monitor_interval_secs=5
reconnect_attempts=6
reconnect_interval=5</programlisting>
</para>
<para>
Adjust settings as appropriate; copy and adjust for the second node (particularly
the values <varname>node_id</varname>, <varname>node_name</varname>
and <varname>conninfo</varname>).
</para>
<para>
Note that the values provided for the <varname>conninfo</varname> string
must be valid for connections from <emphasis>both</emphasis> nodes in the
replication cluster. The database must be the BDR-enabled database.
</para>
<para>
If defined, the <varname>event_notifications</varname> parameter will restrict
execution of the script defined in <varname>event_notification_command</varname>
to the specified event(s).
</para>
<note>
<simpara>
<varname>event_notification_command</varname> is the script which does the actual "heavy lifting"
of reconfiguring the proxy server/ connection pooler. It is fully
user-definable; see section <xref linkend="bdr-event-notification-command"/> for a reference
implementation.
</simpara>
</note>
</sect1>
<sect1 id="bdr-repmgr-setup" xreflabel="repmgr setup with BDR">
<title>repmgr setup</title>
<para>
Register both nodes; example on <literal>node1</literal>:
<programlisting>
$ repmgr -f /etc/repmgr.conf bdr register
NOTICE: attempting to install extension "repmgr"
NOTICE: "repmgr" extension successfully installed
NOTICE: node record created for node 'node1' (ID: 1)
NOTICE: BDR node 1 registered (conninfo: host=node1 dbname=bdrtest user=repmgr)</programlisting>
</para>
<para>
and on <literal>node1</literal>:
<programlisting>
$ repmgr -f /etc/repmgr.conf bdr register
NOTICE: node record created for node 'node2' (ID: 2)
NOTICE: BDR node 2 registered (conninfo: host=node2 dbname=bdrtest user=repmgr)</programlisting>
</para>
<para>
The <literal>repmgr</literal> extension will be automatically created
when the first node is registered, and will be propagated to the second
node.
</para>
<important>
<simpara>
Ensure the &repmgr; package is available on both nodes before
attempting to register the first node.
</simpara>
</important>
<para>
At this point the meta data for both nodes has been created; executing
<xref linkend="repmgr-cluster-show"/> (on either node) should produce output like this:
<programlisting>
$ repmgr -f /etc/repmgr.conf cluster show
ID | Name | Role | Status | Upstream | Location | Connection string
----+-------+------+-----------+----------+--------------------------------------------------------
1 | node1 | bdr | * running | | default | host=node1 dbname=bdrtest user=repmgr connect_timeout=2
2 | node2 | bdr | * running | | default | host=node2 dbname=bdrtest user=repmgr connect_timeout=2</programlisting>
</para>
<para>
Additionally it's possible to display log of significant events; executing
<xref linkend="repmgr-cluster-event"/> (on either node) should produce output like this:
<programlisting>
$ repmgr -f /etc/repmgr.conf cluster event
Node ID | Event | OK | Timestamp | Details
---------+--------------+----+---------------------+----------------------------------------------
2 | bdr_register | t | 2017-07-27 17:51:48 | node record created for node 'node2' (ID: 2)
1 | bdr_register | t | 2017-07-27 17:51:00 | node record created for node 'node1' (ID: 1)
</programlisting>
</para>
<para>
At this point there will only be records for the two node registrations (displayed here
in reverse chronological order).
</para>
</sect1>
<sect1 id="bdr-event-notification-command" xreflabel="Defining the BDR failover &quot;event_notification command&quot;">
<title>Defining the BDR failover "event_notification_command"</title>
<para>
Key to "failover" execution is the <literal>event_notification_command</literal>,
which is a user-definable script specified in <filename>repmpgr.conf</filename>
and which can use a &repmgr; <link linkend="event-notifications">event notification</link>
to reconfigure the proxy server / connection pooler so it points to the other, still-active node.
Details of the event will be passed as parameters to the script.
</para>
<para>
Following parameter placeholders are available for the script definition in <filename>repmpgr.conf</filename>;
these will be replaced with the appropriate value when the script is executed:
</para>
<variablelist>
<varlistentry>
<term><option>%n</option></term>
<listitem>
<para>
node ID
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>%e</option></term>
<listitem>
<para>
event type
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>%t</option></term>
<listitem>
<para>
success (1 or 0)
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>%t</option></term>
<listitem>
<para>
timestamp
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>%d</option></term>
<listitem>
<para>
details
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>%c</option></term>
<listitem>
<para>
conninfo string of the next available node (<varname>bdr_failover</varname> and <varname>bdr_recovery</varname>)
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>%a</option></term>
<listitem>
<para>
name of the next available node (<varname>bdr_failover</varname> and <varname>bdr_recovery</varname>)
</para>
</listitem>
</varlistentry>
</variablelist>
<para>
Note that <literal>%c</literal> and <literal>%a</literal> are only provided with
particular failover events, in this case <varname>bdr_failover</varname>.
</para>
<para>
The provided sample script
(<literal><ulink url="https://raw.githubusercontent.com/2ndQuadrant/repmgr/master/scripts/bdr-pgbouncer.sh">scripts/bdr-pgbouncer.sh</ulink></literal>)
is configured as follows:
<programlisting>
event_notification_command='/path/to/bdr-pgbouncer.sh %n %e %s "%c" "%a"'</programlisting>
</para>
<para>
and parses the placeholder parameters like this:
<programlisting>
NODE_ID=$1
EVENT_TYPE=$2
SUCCESS=$3
NEXT_CONNINFO=$4
NEXT_NODE_NAME=$5</programlisting>
</para>
<note>
<para>
The sample script also contains some hard-coded values for the <application>PgBouncer</application>
configuration for both nodes; these will need to be adjusted for your local environment
(ideally the scripts would be maintained as templates and generated by some
kind of provisioning system).
</para>
</note>
<para>
The script performs following steps:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>pauses <application>PgBouncer</application> on all nodes</simpara>
</listitem>
<listitem>
<simpara>recreates the <application>PgBouncer</application> configuration file on each
node using the information provided by &repmgrd;
(primarily the <varname>conninfo</varname> string) to configure
<application>PgBouncer</application></simpara>
</listitem>
<listitem>
<simpara>reloads the <application>PgBouncer</application> configuration</simpara>
</listitem>
<listitem>
<simpara>executes the <command>RESUME</command> command (in <application>PgBouncer</application>)</simpara>
</listitem>
</itemizedlist>
</para>
<para>
Following successful script execution, any connections to PgBouncer on the failed BDR node
will be redirected to the active node.
</para>
</sect1>
<sect1 id="bdr-monitoring-failover" xreflabel="Node monitoring and failover">
<title>Node monitoring and failover</title>
<para>
At the intervals specified by <varname>monitor_interval_secs</varname>
in <filename>repmgr.conf</filename>, &repmgrd;
will ping each node to check if it's available. If a node isn't available,
&repmgrd; will enter failover mode and check <varname>reconnect_attempts</varname>
times at intervals of <varname>reconnect_interval</varname> to confirm the node is definitely unreachable.
This buffer period is necessary to avoid false positives caused by transient
network outages.
</para>
<para>
If the node is still unavailable, &repmgrd; will enter failover mode and execute
the script defined in <varname>event_notification_command</varname>; an entry will be logged
in the <literal>repmgr.events</literal> table and &repmgrd; will
(unless otherwise configured) resume monitoring of the node in "degraded" mode until it reappears.
</para>
<para>
&repmgrd; logfile output during a failover event will look something like this
on one node (usually the node which has failed, here <literal>node2</literal>):
<programlisting>
...
[2017-07-27 21:08:39] [INFO] starting continuous BDR node monitoring
[2017-07-27 21:08:39] [INFO] monitoring BDR replication status on node "node2" (ID: 2)
[2017-07-27 21:08:55] [INFO] monitoring BDR replication status on node "node2" (ID: 2)
[2017-07-27 21:09:11] [INFO] monitoring BDR replication status on node "node2" (ID: 2)
[2017-07-27 21:09:23] [WARNING] unable to connect to node node2 (ID 2)
[2017-07-27 21:09:23] [INFO] checking state of node 2, 0 of 5 attempts
[2017-07-27 21:09:23] [INFO] sleeping 1 seconds until next reconnection attempt
[2017-07-27 21:09:24] [INFO] checking state of node 2, 1 of 5 attempts
[2017-07-27 21:09:24] [INFO] sleeping 1 seconds until next reconnection attempt
[2017-07-27 21:09:25] [INFO] checking state of node 2, 2 of 5 attempts
[2017-07-27 21:09:25] [INFO] sleeping 1 seconds until next reconnection attempt
[2017-07-27 21:09:26] [INFO] checking state of node 2, 3 of 5 attempts
[2017-07-27 21:09:26] [INFO] sleeping 1 seconds until next reconnection attempt
[2017-07-27 21:09:27] [INFO] checking state of node 2, 4 of 5 attempts
[2017-07-27 21:09:27] [INFO] sleeping 1 seconds until next reconnection attempt
[2017-07-27 21:09:28] [WARNING] unable to reconnect to node 2 after 5 attempts
[2017-07-27 21:09:28] [NOTICE] setting node record for node 2 to inactive
[2017-07-27 21:09:28] [INFO] executing notification command for event "bdr_failover"
[2017-07-27 21:09:28] [DETAIL] command is:
/path/to/bdr-pgbouncer.sh 2 bdr_failover 1 "host=host=node1 dbname=bdrtest user=repmgr connect_timeout=2" "node1"
[2017-07-27 21:09:28] [INFO] node 'node2' (ID: 2) detected as failed; next available node is 'node1' (ID: 1)
[2017-07-27 21:09:28] [INFO] monitoring BDR replication status on node "node2" (ID: 2)
[2017-07-27 21:09:28] [DETAIL] monitoring node "node2" (ID: 2) in degraded mode
...</programlisting>
</para>
<para>
Output on the other node (<literal>node1</literal>) during the same event will look like this:
<programlisting>
...
[2017-07-27 21:08:35] [INFO] starting continuous BDR node monitoring
[2017-07-27 21:08:35] [INFO] monitoring BDR replication status on node "node1" (ID: 1)
[2017-07-27 21:08:51] [INFO] monitoring BDR replication status on node "node1" (ID: 1)
[2017-07-27 21:09:07] [INFO] monitoring BDR replication status on node "node1" (ID: 1)
[2017-07-27 21:09:23] [WARNING] unable to connect to node node2 (ID 2)
[2017-07-27 21:09:23] [INFO] checking state of node 2, 0 of 5 attempts
[2017-07-27 21:09:23] [INFO] sleeping 1 seconds until next reconnection attempt
[2017-07-27 21:09:24] [INFO] checking state of node 2, 1 of 5 attempts
[2017-07-27 21:09:24] [INFO] sleeping 1 seconds until next reconnection attempt
[2017-07-27 21:09:25] [INFO] checking state of node 2, 2 of 5 attempts
[2017-07-27 21:09:25] [INFO] sleeping 1 seconds until next reconnection attempt
[2017-07-27 21:09:26] [INFO] checking state of node 2, 3 of 5 attempts
[2017-07-27 21:09:26] [INFO] sleeping 1 seconds until next reconnection attempt
[2017-07-27 21:09:27] [INFO] checking state of node 2, 4 of 5 attempts
[2017-07-27 21:09:27] [INFO] sleeping 1 seconds until next reconnection attempt
[2017-07-27 21:09:28] [WARNING] unable to reconnect to node 2 after 5 attempts
[2017-07-27 21:09:28] [NOTICE] other node's repmgrd is handling failover
[2017-07-27 21:09:28] [INFO] monitoring BDR replication status on node "node1" (ID: 1)
[2017-07-27 21:09:28] [DETAIL] monitoring node "node2" (ID: 2) in degraded mode
...</programlisting>
</para>
<para>
This assumes only the PostgreSQL instance on <literal>node2</literal> has failed. In this case the
&repmgrd; instance running on <literal>node2</literal> has performed the failover. However if
the entire server becomes unavailable, &repmgrd; on <literal>node1</literal> will perform
the failover.
</para>
</sect1>
<sect1 id="bdr-node-recovery" xreflabel="Node recovery">
<title>Node recovery</title>
<para>
Following failure of a BDR node, if the node subsequently becomes available again,
a <varname>bdr_recovery</varname> event will be generated. This could potentially be used to
reconfigure PgBouncer automatically to bring the node back into the available pool,
however it would be prudent to manually verify the node's status before
exposing it to the application.
</para>
<para>
If the failed node comes back up and connects correctly, output similar to this
will be visible in the &repmgrd; log:
<programlisting>
[2017-07-27 21:25:30] [DETAIL] monitoring node "node2" (ID: 2) in degraded mode
[2017-07-27 21:25:46] [INFO] monitoring BDR replication status on node "node2" (ID: 2)
[2017-07-27 21:25:46] [DETAIL] monitoring node "node2" (ID: 2) in degraded mode
[2017-07-27 21:25:55] [INFO] active replication slot for node "node1" found after 1 seconds
[2017-07-27 21:25:55] [NOTICE] node "node2" (ID: 2) has recovered after 986 seconds</programlisting>
</para>
</sect1>
<sect1 id="bdr-complete-shutdown" xreflabel="Shutdown of both nodes">
<title>Shutdown of both nodes</title>
<para>
If both PostgreSQL instances are shut down, &repmgrd; will try and handle the
situation as gracefully as possible, though with no failover candidates available
there's not much it can do. Should this case ever occur, we recommend shutting
down &repmgrd; on both nodes and restarting it once the PostgreSQL instances
are running properly.
</para>
</sect1>
</chapter>

View File

@@ -8,20 +8,16 @@
</indexterm> </indexterm>
<para> <para>
&repmgrd; is a daemon process which runs on each PostgreSQL node, &repmgrd; is a daemon which runs on each PostgreSQL node,
monitoring the local node, and (unless it's the primary node) the upstream server monitoring the local node, and (unless it's the primary node) the upstream server
(the primary server or with cascading replication, another standby) which it's (the primary server or with cascading replication, another standby) which it's
connected to. connected to.
</para> </para>
<para> <para>
&repmgrd; can be configured to provide failover &repmgrd; can be configured to provide failover
capability in case the primary or upstream node becomes unreachable, and/or capability in case the primary upstream node becomes unreachable, and/or
provide monitoring data to the &repmgr; metadatabase. provide monitoring data to the &repmgr; metadatabase.
</para> </para>
<para>
From &repmgr; 4.4, when running on the primary node, &repmgrd; can also monitor
standby disconnections/reconnections (see <xref linkend="repmgrd-primary-child-disconnection"/>).
</para>
<sect1 id="repmgrd-basic-configuration"> <sect1 id="repmgrd-basic-configuration">
<title>repmgrd configuration</title> <title>repmgrd configuration</title>
@@ -81,7 +77,7 @@
<listitem> <listitem>
<simpara> <simpara>
<literal>connection</literal> - determines server availability <literal>connection</literal> - determines server availability
by attempting to make a new connection to the upstream node by attempt ingto make a new connection to the upstream node
</simpara> </simpara>
</listitem> </listitem>
<listitem> <listitem>
@@ -89,10 +85,6 @@
<literal>query</literal> - determines server availability <literal>query</literal> - determines server availability
by executing an SQL statement on the node via the existing connection by executing an SQL statement on the node via the existing connection
</simpara> </simpara>
<simpara>
The query is a minimal throwaway query - <command>SELECT 1</command> -
which is used to determine that the server can accept queries.
</simpara>
</listitem> </listitem>
</itemizedlist> </itemizedlist>
@@ -156,7 +148,7 @@
</variablelist> </variablelist>
<para> <para>
See also <filename><ulink url="https://raw.githubusercontent.com/EnterpriseDB/repmgr/master/repmgr.conf.sample">repmgr.conf.sample</ulink></filename> for an annotated sample configuration file. See also <filename><ulink url="https://raw.githubusercontent.com/2ndQuadrant/repmgr/master/repmgr.conf.sample">repmgr.conf.sample</ulink></filename> for an annotated sample configuration file.
</para> </para>
<sect2 id="repmgrd-automatic-failover-configuration"> <sect2 id="repmgrd-automatic-failover-configuration">
@@ -230,17 +222,6 @@
Normally <option>promote_command</option> is set as &repmgr;'s Normally <option>promote_command</option> is set as &repmgr;'s
<command><link linkend="repmgr-standby-promote">repmgr standby promote</link></command> command. <command><link linkend="repmgr-standby-promote">repmgr standby promote</link></command> command.
</para> </para>
<note>
<para>
When invoking <command>repmgr standby promote</command> (either directly via
the <option>promote_command</option>, or in a script called
via <option>promote_command</option>), <option>--siblings-follow</option>
<emphasis>must not</emphasis> be included as a
command line option for <command>repmgr standby promote</command>.
</para>
</note>
<para> <para>
It is also possible to provide a shell script to e.g. perform user-defined tasks It is also possible to provide a shell script to e.g. perform user-defined tasks
before promoting the current node. In this case the script <emphasis>must</emphasis> before promoting the current node. In this case the script <emphasis>must</emphasis>
@@ -329,11 +310,11 @@
</sect2> </sect2>
<sect2 id="repmgrd-automatic-failover-configuration-optional" xreflabel="Optional configuration for automatic failover"> <sect2 id="repmgrd-automatic-failover-configuration-optional">
<title>Optional configuration for automatic failover</title> <title>Optional configuration for automatic failover</title>
<para> <para>
The following configuraton options can be used to fine-tune automatic failover: The following configuraton options can be use to fine-tune automatic failover:
</para> </para>
<variablelist> <variablelist>
@@ -374,8 +355,8 @@
</para> </para>
</note> </note>
<para> <para>
One or more of the following parameter placeholders One or both of the following parameter placeholders
may be provided, which will be replaced by repmgrd with the appropriate should be provided, which will be replaced by repmgrd with the appropriate
value: value:
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">
<listitem> <listitem>
@@ -384,15 +365,6 @@
<listitem> <listitem>
<simpara><literal>%a</literal>: node name</simpara> <simpara><literal>%a</literal>: node name</simpara>
</listitem> </listitem>
<listitem>
<simpara><literal>%v</literal>: number of visible nodes</simpara>
</listitem>
<listitem>
<simpara><literal>%u</literal>: number of shared upstream nodes</simpara>
</listitem>
<listitem>
<simpara><literal>%t</literal>: total number of nodes</simpara>
</listitem>
</itemizedlist> </itemizedlist>
</para> </para>
<para> <para>
@@ -411,8 +383,8 @@
</indexterm> </indexterm>
<para> <para>
If <literal>true</literal>, only continue with failover if no standbys If <literal>true</literal>, only continue with failover if no standbys have seen
(or the witness server, if present) have seen the primary node recently. the primary node recently.
</para> </para>
<note> <note>
<para> <para>
@@ -423,33 +395,6 @@
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term><option>always_promote</option></term>
<listitem>
<indexterm>
<primary>always_promote</primary>
</indexterm>
<para>
Default: <literal>false</literal>.
</para>
<para>
If <literal>true</literal>, promote the local node even if its
&repmgr; metadata is not up-to-date.
</para>
<para>
Normally &repmgr; expects its metadata (stored in the <varname>repmgr.nodes</varname>
table) to be up-to-date so &repmgrd; can take the correct action during a failover.
However it's possible that updates made on the primary may not
have propagated to the standby (promotion candidate). In this case &repmgrd; will
default to not promoting the standby. This behaviour can be overridden by setting
<option>always_promote</option> to <literal>true</literal>.
</para>
</listitem>
</varlistentry>
<varlistentry> <varlistentry>
<term><option>standby_disconnect_on_failover</option></term> <term><option>standby_disconnect_on_failover</option></term>
@@ -485,32 +430,6 @@
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term><option>repmgrd_exit_on_inactive_node</option></term>
<listitem>
<indexterm>
<primary>repmgrd_exit_on_inactive_node</primary>
</indexterm>
<para>
This parameter is available in &repmgr; 5.3 and later.
</para>
<para>
If a node was marked as inactive but is running, and this option is set to
<literal>true</literal>, &repmgrd; will abort on startup.
</para>
<para>
By default, <option>repmgrd_exit_on_inactive_node</option> is set
to <literal>false</literal>, in which case &repmgrd; will set the
node record to active on startup.
</para>
<para>
Setting this parameter to <literal>true</literal> causes &repmgrd;
to behave in the same way it did in &repmgr; 5.2 and earlier.
</para>
</listitem>
</varlistentry>
</variablelist> </variablelist>
<para> <para>
@@ -556,23 +475,6 @@
</sect2> </sect2>
<sect2 id="repmgrd-automatic-failover-configuration-pgbouncer-fencing">
<title>Configuring &repmgrd; and pgbouncer to fence a failed primary node</title>
<indexterm>
<primary>fencing</primary>
<secondary>using repmgrd and pgbouncer to fence a failed primary node</secondary>
</indexterm>
<indexterm>
<primary>PgBouncer</primary>
<secondary>using repmgrd and pgbouncer to fence a failed primary node</secondary>
</indexterm>
<para>
For further details and a reference implementation, see the separate document
<ulink url="https://github.com/EnterpriseDB/repmgr/blob/master/doc/repmgrd-node-fencing.md">Fencing a failed master node with repmgrd and PgBouncer</ulink>.
</para>
</sect2>
<sect2 id="postgresql-service-configuration"> <sect2 id="postgresql-service-configuration">
<title>PostgreSQL service configuration</title> <title>PostgreSQL service configuration</title>
@@ -606,8 +508,7 @@
</indexterm> </indexterm>
<para> <para>
If you are intending to use the <link linkend="repmgr-daemon-start"><command>repmgr daemon start</command></link> If you are intending to use the <link linkend="repmgr-daemon-start"><command>repmgr daemon start</command></link>
and <link linkend="repmgr-daemon-stop"><command>repmgr daemon stop</command></link> and <link linkend="repmgr-daemon-stop"><command>repmgr daemon stop</command></link> commands, the following
commands, the following
parameters <emphasis>must</emphasis> be set in <filename>repmgr.conf</filename>: parameters <emphasis>must</emphasis> be set in <filename>repmgr.conf</filename>:
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">
@@ -623,10 +524,10 @@
</para> </para>
<para> <para>
Example (for &repmgr; with PostgreSQL 12 on CentOS 7): Example (for &repmgr; with PostgreSQL 11 on CentOS 7):
<programlisting> <programlisting>
repmgrd_service_start_command='sudo systemctl repmgr12 start' repmgrd_service_start_command='sudo systemctl repmgr11 start'
repmgrd_service_stop_command='sudo systemctl repmgr12 stop' repmgrd_service_stop_command='sudo systemctl repmgr11 stop'
</programlisting> </programlisting>
</para> </para>
<para> <para>
@@ -653,8 +554,7 @@ repmgrd_service_stop_command='sudo systemctl repmgr12 stop'
the option <option>monitor_interval_secs</option> (see above). the option <option>monitor_interval_secs</option> (see above).
</para> </para>
<para> <para>
For more details on monitoring, see <xref linkend="repmgrd-monitoring"/>. For information on For more details on monitoring, see <xref linkend="repmgrd-monitoring"/>.
monitoring standby disconnections, see <xref linkend="repmgrd-primary-child-disconnection"/>.
</para> </para>
</sect2> </sect2>
@@ -690,6 +590,18 @@ repmgrd_service_stop_command='sudo systemctl repmgr12 stop'
</simpara> </simpara>
</listitem> </listitem>
<listitem>
<simpara>
<varname>bdr_local_monitoring_only</varname>
</simpara>
</listitem>
<listitem>
<simpara>
<varname>bdr_recovery_timeout</varname>
</simpara>
</listitem>
<listitem> <listitem>
<simpara> <simpara>
<varname>child_nodes_check_interval</varname> <varname>child_nodes_check_interval</varname>
@@ -822,12 +734,6 @@ repmgrd_service_stop_command='sudo systemctl repmgr12 stop'
</simpara> </simpara>
</listitem> </listitem>
<listitem>
<simpara>
<varname>always_promote</varname>
</simpara>
</listitem>
<listitem> <listitem>
<simpara> <simpara>
<varname>promote_command</varname> <varname>promote_command</varname>
@@ -943,7 +849,7 @@ repmgrd_service_stop_command='sudo systemctl repmgr12 stop'
<para> <para>
The commands <link linkend="repmgr-daemon-start"><command>repmgr daemon start</command></link> and The commands <link linkend="repmgr-daemon-start"><command>repmgr daemon start</command></link> and
<link linkend="repmgr-daemon-stop"><command>repmgr daemon stop</command></link> can be used <link linkend="repmgr-daemon-stop"><command>repmgr daemon stop</command></link> can be used
as convenience wrappers to start and stop &repmgrd; on the local node. as convenience wrappers to start and stop &repmgrd;.
</para> </para>
<important> <important>
<para> <para>
@@ -999,7 +905,7 @@ repmgrd_service_stop_command='sudo systemctl repmgr12 stop'
</para> </para>
<para> <para>
If none of the above apply, &repmgrd; will create a PID file If none of the above apply, &repmgrd; will create a PID file
in the operating system's temporary directory (as determined by the environment variable in the operating system's temporary directory (as setermined by the environment variable
<varname>TMPDIR</varname>, or if that is not set, will use <filename>/tmp</filename>). <varname>TMPDIR</varname>, or if that is not set, will use <filename>/tmp</filename>).
</para> </para>
<para> <para>
@@ -1079,29 +985,6 @@ REPMGRD_OPTS="--daemonize=false"
</para> </para>
</sect2> </sect2>
<sect2 id="repmgrd-daemon-monitoring">
<title>repmgrd daemon monitoring</title>
<indexterm>
<primary>repmgrd</primary>
<secondary>monitoring</secondary>
</indexterm>
<indexterm>
<primary>monitoring</primary>
<secondary>repmgrd</secondary>
</indexterm>
<para>
The command <command><link linkend="repmgr-service-status">repmgr service status</link></command>
provides an overview of the &repmgrd; daemon status (including pause status)
on all nodes in the cluster.
</para>
<para>
From &repmgr; 5.3, <command><link linkend="repmgr-node-check">repmgr node check --repmgrd</link></command>
can be used to check the status of &repmgrd; (including pause status)
on the local node.
</para>
</sect2>
</sect1> </sect1>
<sect1 id="repmgrd-connection-settings"> <sect1 id="repmgrd-connection-settings">

View File

@@ -108,7 +108,7 @@ The actual script is as follows; adjust the configurable items as appropriate:
# 1. Promote this node from standby to primary # 1. Promote this node from standby to primary
repmgr standby promote -f /etc/repmgr.conf --log-to-file repmgr standby promote -f /etc/repmgr.conf
# 2. Reconfigure pgbouncer instances # 2. Reconfigure pgbouncer instances
@@ -146,7 +146,7 @@ Script and template file should be installed on each node where `repmgrd` is run
Finally, set `promote_command` in `repmgr.conf` on each node to Finally, set `promote_command` in `repmgr.conf` on each node to
point to the custom promote script: point to the custom promote script:
promote_command='/var/lib/postgres/repmgr/promote.sh' promote_command=/var/lib/postgres/repmgr/promote.sh
and reload/restart any running `repmgrd` instances for the changes to take and reload/restart any running `repmgrd` instances for the changes to take
effect. effect.

View File

@@ -6,9 +6,9 @@
<secondary>operation</secondary> <secondary>operation</secondary>
</indexterm> </indexterm>
<sect1 id="repmgrd-pausing" xreflabel="pausing the repmgrd service"> <sect1 id="repmgrd-pausing">
<title>Pausing the repmgrd service</title> <title>Pausing repmgrd</title>
<indexterm> <indexterm>
<primary>repmgrd</primary> <primary>repmgrd</primary>
@@ -47,7 +47,7 @@
<note> <note>
<para> <para>
For major PostgreSQL upgrades, e.g. from PostgreSQL 11 to PostgreSQL 12, For major PostgreSQL upgrades, e.g. from PostgreSQL 10 to PostgreSQL 11,
&repmgrd; should be shut down completely and only started up &repmgrd; should be shut down completely and only started up
once the &repmgr; packages for the new PostgreSQL major version have been installed. once the &repmgr; packages for the new PostgreSQL major version have been installed.
</para> </para>
@@ -88,21 +88,17 @@
<sect2 id="repmgrd-pausing-execution"> <sect2 id="repmgrd-pausing-execution">
<title>Pausing/unpausing &repmgrd;</title> <title>Pausing/unpausing &repmgrd;</title>
<para> <para>
To pause &repmgrd;, execute <link linkend="repmgr-service-pause"><command>repmgr service pause</command></link> To pause &repmgrd;, execute <link linkend="repmgr-daemon-pause"><command>repmgr daemon pause</command></link>, e.g.:
(&repmgr; 4.2 - 4.4: <link linkend="repmgr-service-pause"><command>repmgr daemon pause</command></link>),
e.g.:
<programlisting> <programlisting>
$ repmgr -f /etc/repmgr.conf service pause $ repmgr -f /etc/repmgr.conf daemon pause
NOTICE: node 1 (node1) paused NOTICE: node 1 (node1) paused
NOTICE: node 2 (node2) paused NOTICE: node 2 (node2) paused
NOTICE: node 3 (node3) paused</programlisting> NOTICE: node 3 (node3) paused</programlisting>
</para> </para>
<para> <para>
The state of &repmgrd; on each node can be checked with The state of &repmgrd; on each node can be checked with
<link linkend="repmgr-service-status"><command>repmgr service status</command></link> <link linkend="repmgr-daemon-status"><command>repmgr daemon status</command></link>, e.g.:
(&repmgr; 4.2 - 4.4: <link linkend="repmgr-service-status"><command>repmgr daemon status</command></link>), <programlisting>$ repmgr -f /etc/repmgr.conf daemon status
e.g.:
<programlisting>$ repmgr -f /etc/repmgr.conf service status
ID | Name | Role | Status | repmgrd | PID | Paused? ID | Name | Role | Status | repmgrd | PID | Paused?
----+-------+---------+---------+---------+------+--------- ----+-------+---------+---------+---------+------+---------
1 | node1 | primary | running | running | 7851 | yes 1 | node1 | primary | running | running | 7851 | yes
@@ -112,8 +108,8 @@ NOTICE: node 3 (node3) paused</programlisting>
<note> <note>
<para> <para>
If executing a switchover with <link linkend="repmgr-standby-switchover"><command>repmgr standby switchover</command></link>, If executing a switchover with <link linkend="repmgr-standby-switchover"><command>repmgr standby switchover</command></link>,
&repmgr; will automatically pause/unpause the &repmgrd; service as part of the switchover process. &repmgr; will automatically pause/unpause &repmgrd; as part of the switchover process.
</para> </para>
</note> </note>
@@ -121,32 +117,29 @@ NOTICE: node 3 (node3) paused</programlisting>
If the primary (in this example, <literal>node1</literal>) is stopped, &repmgrd; If the primary (in this example, <literal>node1</literal>) is stopped, &repmgrd;
running on one of the standbys (here: <literal>node2</literal>) will react like this: running on one of the standbys (here: <literal>node2</literal>) will react like this:
<programlisting> <programlisting>
[2019-08-28 12:22:21] [WARNING] unable to connect to upstream node "node1" (node ID: 1) [2018-09-20 12:22:21] [WARNING] unable to connect to upstream node "node1" (ID: 1)
[2019-08-28 12:22:21] [INFO] checking state of node 1, 1 of 5 attempts [2018-09-20 12:22:21] [INFO] checking state of node 1, 1 of 5 attempts
[2019-08-28 12:22:21] [INFO] sleeping 1 seconds until next reconnection attempt [2018-09-20 12:22:21] [INFO] sleeping 1 seconds until next reconnection attempt
... ...
[2019-08-28 12:22:24] [INFO] sleeping 1 seconds until next reconnection attempt [2018-09-20 12:22:24] [INFO] sleeping 1 seconds until next reconnection attempt
[2019-08-28 12:22:25] [INFO] checking state of node 1, 5 of 5 attempts [2018-09-20 12:22:25] [INFO] checking state of node 1, 5 of 5 attempts
[2019-08-28 12:22:25] [WARNING] unable to reconnect to node 1 after 5 attempts [2018-09-20 12:22:25] [WARNING] unable to reconnect to node 1 after 5 attempts
[2019-08-28 12:22:25] [NOTICE] node is paused [2018-09-20 12:22:25] [NOTICE] node is paused
[2019-08-28 12:22:33] [INFO] node "node2" (ID: 2) monitoring upstream node "node1" (node ID: 1) in degraded state [2018-09-20 12:22:33] [INFO] node "node2" (ID: 2) monitoring upstream node "node1" (ID: 1) in degraded state
[2019-08-28 12:22:33] [DETAIL] repmgrd paused by administrator [2018-09-20 12:22:33] [DETAIL] repmgrd paused by administrator
[2019-08-28 12:22:33] [HINT] execute "repmgr service unpause" to resume normal failover mode</programlisting> [2018-09-20 12:22:33] [HINT] execute "repmgr daemon unpause" to resume normal failover mode</programlisting>
</para> </para>
<para> <para>
If the primary becomes available again (e.g. following a software upgrade), &repmgrd; If the primary becomes available again (e.g. following a software upgrade), &repmgrd;
will automatically reconnect, e.g.: will automatically reconnect, e.g.:
<programlisting> <programlisting>
[2019-08-28 12:25:41] [NOTICE] reconnected to upstream node "node1" (ID: 1) after 8 seconds, resuming monitoring</programlisting> [2018-09-20 13:12:41] [NOTICE] reconnected to upstream node 1 after 8 seconds, resuming monitoring</programlisting>
</para> </para>
<para> <para>
To unpause the &repmgrd; service, execute To unpause &repmgrd;, execute <link linkend="repmgr-daemon-unpause"><command>repmgr daemon unpause</command></link>, e.g.:
<link linkend="repmgr-service-unpause"><command>repmgr service unpause</command></link>
((&repmgr; 4.2 - 4.4: <link linkend="repmgr-service-unpause"><command>repmgr daemon unpause</command></link>),
e.g.:
<programlisting> <programlisting>
$ repmgr -f /etc/repmgr.conf service unpause $ repmgr -f /etc/repmgr.conf daemon unpause
NOTICE: node 1 (node1) unpaused NOTICE: node 1 (node1) unpaused
NOTICE: node 2 (node2) unpaused NOTICE: node 2 (node2) unpaused
NOTICE: node 3 (node3) unpaused</programlisting> NOTICE: node 3 (node3) unpaused</programlisting>
@@ -157,11 +150,11 @@ NOTICE: node 3 (node3) unpaused</programlisting>
If the previous primary is no longer accessible when &repmgrd; If the previous primary is no longer accessible when &repmgrd;
is unpaused, no failover action will be taken. Instead, a new primary must be manually promoted using is unpaused, no failover action will be taken. Instead, a new primary must be manually promoted using
<link linkend="repmgr-standby-promote"><command>repmgr standby promote</command></link>, <link linkend="repmgr-standby-promote"><command>repmgr standby promote</command></link>,
and any standbys attached to the new primary with and any standbys attached to the new primary with
<link linkend="repmgr-standby-follow"><command>repmgr standby follow</command></link>. <link linkend="repmgr-standby-follow"><command>repmgr standby follow</command></link>.
</para> </para>
<para> <para>
This is to prevent execution of <link linkend="repmgr-service-unpause"><command>repmgr service unpause</command></link> This is to prevent <link linkend="repmgr-daemon-unpause"><command>repmgr daemon unpause</command></link>
resulting in the automatic promotion of a new primary, which may be a problem particularly resulting in the automatic promotion of a new primary, which may be a problem particularly
in larger clusters, where &repmgrd; could select a different promotion in larger clusters, where &repmgrd; could select a different promotion
candidate to the one intended by the administrator. candidate to the one intended by the administrator.
@@ -175,23 +168,17 @@ NOTICE: node 3 (node3) unpaused</programlisting>
The pause state of each node will be stored over a PostgreSQL restart. The pause state of each node will be stored over a PostgreSQL restart.
</para> </para>
<para> <para>
<link linkend="repmgr-service-pause"><command>repmgr service pause</command></link> and <link linkend="repmgr-daemon-pause"><command>repmgr daemon pause</command></link> and
<link linkend="repmgr-service-unpause"><command>repmgr service unpause</command></link> can be <link linkend="repmgr-daemon-unpause"><command>repmgr daemon unpause</command></link> can be
executed even if &repmgrd; is not running; in this case, executed even if &repmgrd; is not running; in this case,
&repmgrd; will start up in whichever pause state has been set. &repmgrd; will start up in whichever pause state has been set.
</para> </para>
<note> <note>
<para> <para>
<link linkend="repmgr-service-pause"><command>repmgr service pause</command></link> and <link linkend="repmgr-daemon-pause"><command>repmgr daemon pause</command></link> and
<link linkend="repmgr-service-unpause"><command>repmgr service unpause</command></link> <link linkend="repmgr-daemon-unpause"><command>repmgr daemon unpause</command></link>
<emphasis>do not</emphasis> start/stop &repmgrd;. <emphasis>do not</emphasis> stop/start &repmgrd;.
</para>
<para>
The commands <link linkend="repmgr-daemon-start"><command>repmgr daemon start</command></link>
and <link linkend="repmgr-daemon-stop"><command>repmgr daemon stop</command></link>
(<link linkend="repmgrd-service-configuration">if correctly configured</link>) can be used to start/stop
&repmgrd; on individual nodes.
</para> </para>
</note> </note>
</sect2> </sect2>
@@ -295,7 +282,7 @@ NOTICE: node 3 (node3) unpaused</programlisting>
[2017-08-29 10:59:37] [HINT] use "repmgr standby promote" to manually promote this node [2017-08-29 10:59:37] [HINT] use "repmgr standby promote" to manually promote this node
[2017-08-29 10:59:37] [INFO] node "node2" (ID: 2) monitoring upstream node "node1" (ID: 1) in degraded state (automatic failover disabled) [2017-08-29 10:59:37] [INFO] node "node2" (ID: 2) monitoring upstream node "node1" (ID: 1) in degraded state (automatic failover disabled)
[2017-08-29 10:59:53] [INFO] node "node2" (ID: 2) monitoring upstream node "node1" (ID: 1) in degraded state (automatic failover disabled) [2017-08-29 10:59:53] [INFO] node "node2" (ID: 2) monitoring upstream node "node1" (ID: 1) in degraded state (automatic failover disabled)
[2017-08-29 11:00:45] [NOTICE] reconnected to upstream node "node1" (ID: 1) after 68 seconds, resuming monitoring [2017-08-29 11:00:45] [NOTICE] reconnected to upstream node 1 after 68 seconds, resuming monitoring
[2017-08-29 11:00:57] [INFO] node "node2" (ID: 2) monitoring upstream node "node1" (ID: 1) in normal state (automatic failover disabled)</programlisting> [2017-08-29 11:00:57] [INFO] node "node2" (ID: 2) monitoring upstream node "node1" (ID: 1) in normal state (automatic failover disabled)</programlisting>
</para> </para>

View File

@@ -38,7 +38,7 @@
<simpara> <simpara>
ability to <link linkend="repmgrd-pausing">pause repmgrd</link> ability to <link linkend="repmgrd-pausing">pause repmgrd</link>
operation on all nodes with a operation on all nodes with a
<link linkend="repmgr-service-pause"><command>single command</command></link> <link linkend="repmgr-daemon-pause"><command>single command</command></link>
</simpara> </simpara>
</listitem> </listitem>
@@ -100,11 +100,11 @@
Start &repmgrd; on each standby and verify that it's running by examining the Start &repmgrd; on each standby and verify that it's running by examining the
log output, which at log level <literal>INFO</literal> will look like this: log output, which at log level <literal>INFO</literal> will look like this:
<programlisting> <programlisting>
[2019-08-15 07:14:42] [NOTICE] repmgrd (repmgrd 5.0) starting up [2019-03-15 06:32:05] [NOTICE] repmgrd (repmgrd 4.3) starting up
[2019-08-15 07:14:42] [INFO] connecting to database "host=node2 dbname=repmgr user=repmgr connect_timeout=2" [2019-03-15 06:32:05] [INFO] connecting to database "host=node2 dbname=repmgr user=repmgr connect_timeout=2"
INFO: set_repmgrd_pid(): provided pidfile is /var/run/repmgr/repmgrd-12.pid INFO: set_repmgrd_pid(): provided pidfile is /var/run/repmgr/repmgrd-11.pid
[2019-08-15 07:14:42] [NOTICE] starting monitoring of node "node2" (ID: 2) [2019-03-15 06:32:05] [NOTICE] starting monitoring of node "node2" (ID: 2)
[2019-08-15 07:14:42] [INFO] monitoring connection to upstream node "node1" (ID: 1)</programlisting> [2019-03-15 06:32:05] [INFO] monitoring connection to upstream node "node1" (ID: 1)</programlisting>
</para> </para>
<para> <para>
Each &repmgrd; should also have recorded its successful startup as an event: Each &repmgrd; should also have recorded its successful startup as an event:
@@ -112,9 +112,9 @@
$ repmgr -f /etc/repmgr.conf cluster event --event=repmgrd_start $ repmgr -f /etc/repmgr.conf cluster event --event=repmgrd_start
Node ID | Name | Event | OK | Timestamp | Details Node ID | Name | Event | OK | Timestamp | Details
---------+-------+---------------+----+---------------------+-------------------------------------------------------- ---------+-------+---------------+----+---------------------+--------------------------------------------------------
3 | node3 | repmgrd_start | t | 2019-08-15 07:14:42 | monitoring connection to upstream node "node1" (ID: 1) 3 | node3 | repmgrd_start | t | 2019-03-14 04:17:30 | monitoring connection to upstream node "node1" (ID: 1)
2 | node2 | repmgrd_start | t | 2019-08-15 07:14:41 | monitoring connection to upstream node "node1" (ID: 1) 2 | node2 | repmgrd_start | t | 2019-03-14 04:11:47 | monitoring connection to upstream node "node1" (ID: 1)
1 | node1 | repmgrd_start | t | 2019-08-15 07:14:39 | monitoring cluster primary "node1" (ID: 1)</programlisting> 1 | node1 | repmgrd_start | t | 2019-03-14 04:04:31 | monitoring cluster primary "node1" (ID: 1)</programlisting>
</para> </para>
<para> <para>
Now stop the current primary server with e.g.: Now stop the current primary server with e.g.:
@@ -128,33 +128,33 @@
decision is made. This is an extract from the log of a standby server (<literal>node2</literal>) decision is made. This is an extract from the log of a standby server (<literal>node2</literal>)
which has promoted to new primary after failure of the original primary (<literal>node1</literal>). which has promoted to new primary after failure of the original primary (<literal>node1</literal>).
<programlisting> <programlisting>
[2019-08-15 07:27:50] [WARNING] unable to connect to upstream node "node1" (ID: 1) [2019-03-15 06:37:50] [WARNING] unable to connect to upstream node "node1" (ID: 1)
[2019-08-15 07:27:50] [INFO] checking state of node 1, 1 of 3 attempts [2019-03-15 06:37:50] [INFO] checking state of node 1, 1 of 3 attempts
[2019-08-15 07:27:50] [INFO] sleeping 5 seconds until next reconnection attempt [2019-03-15 06:37:50] [INFO] sleeping 5 seconds until next reconnection attempt
[2019-08-15 07:27:55] [INFO] checking state of node 1, 2 of 3 attempts [2019-03-15 06:37:55] [INFO] checking state of node 1, 2 of 3 attempts
[2019-08-15 07:27:55] [INFO] sleeping 5 seconds until next reconnection attempt [2019-03-15 06:37:55] [INFO] sleeping 5 seconds until next reconnection attempt
[2019-08-15 07:28:00] [INFO] checking state of node 1, 3 of 3 attempts [2019-03-15 06:38:00] [INFO] checking state of node 1, 3 of 3 attempts
[2019-08-15 07:28:00] [WARNING] unable to reconnect to node 1 after 3 attempts [2019-03-15 06:38:00] [WARNING] unable to reconnect to node 1 after 3 attempts
[2019-08-15 07:28:00] [INFO] primary and this node have the same location ("default") [2019-03-15 06:38:00] [INFO] primary and this node have the same location ("default")
[2019-08-15 07:28:00] [INFO] local node's last receive lsn: 0/900CBF8 [2019-03-15 06:38:00] [INFO] local node's last receive lsn: 0/900CBF8
[2019-08-15 07:28:00] [INFO] node 3 last saw primary node 12 second(s) ago [2019-03-15 06:38:00] [INFO] node 3 last saw primary node 12 second(s) ago
[2019-08-15 07:28:00] [INFO] last receive LSN for sibling node "node3" (ID: 3) is: 0/900CBF8 [2019-03-15 06:38:00] [INFO] last receive LSN for sibling node "node3" (ID: 3) is: 0/900CBF8
[2019-08-15 07:28:00] [INFO] node "node3" (ID: 3) has same LSN as current candidate "node2" (ID: 2) [2019-03-15 06:38:00] [INFO] node "node3" (ID: 3) has same LSN as current candidate "node2" (ID: 2)
[2019-08-15 07:28:00] [INFO] visible nodes: 2; total nodes: 2; no nodes have seen the primary within the last 4 seconds [2019-03-15 06:38:00] [INFO] visible nodes: 2; total nodes: 2; no nodes have seen the primary within the last 4 seconds
[2019-08-15 07:28:00] [NOTICE] promotion candidate is "node2" (ID: 2) [2019-03-15 06:38:00] [NOTICE] promotion candidate is "node2" (ID: 2)
[2019-08-15 07:28:00] [NOTICE] this node is the winner, will now promote itself and inform other nodes [2019-03-15 06:38:00] [NOTICE] this node is the winner, will now promote itself and inform other nodes
[2019-08-15 07:28:00] [INFO] promote_command is: [2019-03-15 06:38:00] [INFO] promote_command is:
"/usr/pgsql-12/bin/repmgr -f /etc/repmgr/12/repmgr.conf standby promote" "/usr/pgsql-11/bin/repmgr -f /etc/repmgr/11/repmgr.conf standby promote"
NOTICE: promoting standby to primary NOTICE: promoting standby to primary
DETAIL: promoting server "node2" (ID: 2) using "/usr/pgsql-12/bin/pg_ctl -w -D '/var/lib/pgsql/12/data' promote" DETAIL: promoting server "node2" (ID: 2) using "/usr/pgsql-11/bin/pg_ctl -w -D '/var/lib/pgsql/11/data' promote"
NOTICE: waiting up to 60 seconds (parameter "promote_check_timeout") for promotion to complete NOTICE: waiting up to 60 seconds (parameter "promote_check_timeout") for promotion to complete
NOTICE: STANDBY PROMOTE successful NOTICE: STANDBY PROMOTE successful
DETAIL: server "node2" (ID: 2) was successfully promoted to primary DETAIL: server "node2" (ID: 2) was successfully promoted to primary
[2019-08-15 07:28:01] [INFO] 3 followers to notify [2019-03-15 06:38:01] [INFO] 3 followers to notify
[2019-08-15 07:28:01] [NOTICE] notifying node "node3" (ID: 3) to follow node 2 [2019-03-15 06:38:01] [NOTICE] notifying node "node3" (ID: 3) to follow node 2
INFO: node 3 received notification to follow node 2 INFO: node 3 received notification to follow node 2
[2019-08-15 07:28:01] [INFO] switching to primary monitoring mode [2019-03-15 06:38:01] [INFO] switching to primary monitoring mode
[2019-08-15 07:28:01] [NOTICE] monitoring cluster primary "node2" (ID: 2)</programlisting> [2019-03-15 06:38:01] [NOTICE] monitoring cluster primary "node2" (ID: 2)</programlisting>
</para> </para>
<para> <para>
The cluster status will now look like this, with the original primary (<literal>node1</literal>) The cluster status will now look like this, with the original primary (<literal>node1</literal>)
@@ -176,11 +176,11 @@
$ repmgr -f /etc/repmgr.conf cluster event $ repmgr -f /etc/repmgr.conf cluster event
Node ID | Name | Event | OK | Timestamp | Details Node ID | Name | Event | OK | Timestamp | Details
---------+-------+----------------------------+----+---------------------+------------------------------------------------------------- ---------+-------+----------------------------+----+---------------------+-------------------------------------------------------------
3 | node3 | repmgrd_failover_follow | t | 2019-08-15 07:38:03 | node 3 now following new upstream node 2 3 | node3 | repmgrd_failover_follow | t | 2019-03-15 06:38:03 | node 3 now following new upstream node 2
3 | node3 | standby_follow | t | 2019-08-15 07:38:02 | standby attached to upstream node "node2" (ID: 2) 3 | node3 | standby_follow | t | 2019-03-15 06:38:02 | standby attached to upstream node "node2" (ID: 2)
2 | node2 | repmgrd_reload | t | 2019-08-15 07:38:01 | monitoring cluster primary "node2" (ID: 2) 2 | node2 | repmgrd_reload | t | 2019-03-15 06:38:01 | monitoring cluster primary "node2" (ID: 2)
2 | node2 | repmgrd_failover_promote | t | 2019-08-15 07:38:01 | node 2 promoted to primary; old primary 1 marked as failed 2 | node2 | repmgrd_failover_promote | t | 2019-03-15 06:38:01 | node 2 promoted to primary; old primary 1 marked as failed
2 | node2 | standby_promote | t | 2019-08-15 07:38:01 | server "node2" (ID: 2) was successfully promoted to primary</programlisting> 2 | node2 | standby_promote | t | 2019-03-15 06:38:01 | server "node2" (ID: 2) was successfully promoted to primary</programlisting>
</para> </para>
</sect1> </sect1>

View File

@@ -120,19 +120,16 @@
</important> </important>
<note> <note>
<para> <simpara>
On <literal>systemd</literal> systems we strongly recommend using the appropriate On <literal>systemd</literal> systems we strongly recommend using the appropriate
<command>systemctl</command> commands (typically run via <command>sudo</command>) to ensure <command>systemctl</command> commands (typically run via <command>sudo</command>) to ensure
<literal>systemd</literal> is informed about the status of the PostgreSQL service. <literal>systemd</literal> is informed about the status of the PostgreSQL service.
</para> </simpara>
<para> <simpara>
If using <command>sudo</command> for the <command>systemctl</command> calls, make sure the If using <command>sudo</command> for the <command>systemctl</command> calls, make sure the
<command>sudo</command> specification doesn't require a real tty for the user. If not set <command>sudo</command> specification doesn't require a real tty for the user. If not set
this way, <command>repmgr</command> will fail to stop the primary. this way, <command>repmgr</command> will fail to stop the primary.
</para> </simpara>
<para>
See the <xref linkend="configuration-file-service-commands"/> documentation section for further details.
</para>
</note> </note>
<para> <para>
@@ -189,7 +186,6 @@
NOTICE: local node "node2" (ID: 2) will be promoted to primary; current primary "node1" (ID: 1) will be demoted to standby NOTICE: local node "node2" (ID: 2) will be promoted to primary; current primary "node1" (ID: 1) will be demoted to standby
INFO: following shutdown command would be run on node "node1": INFO: following shutdown command would be run on node "node1":
"pg_ctl -l /var/log/postgresql/startup.log -D '/var/lib/postgresql/data' -m fast -W stop" "pg_ctl -l /var/log/postgresql/startup.log -D '/var/lib/postgresql/data' -m fast -W stop"
INFO: parameter "shutdown_check_timeout" is set to 60 seconds
</programlisting> </programlisting>
</para> </para>
@@ -247,15 +243,16 @@
</para> </para>
<para> <para>
<application>pg_rewind</application> has been part of the core PostgreSQL distribution since <application>pg_rewind</application> has been part of the core PostgreSQL distribution since
version 9.5. Users of PostgreSQL 9.4 will need to manually install it; the source code is available here: version 9.5. Users of versions 9.3 and 9.4 will need to manually install it; the source code is available here:
<ulink url="https://github.com/vmware/pg_rewind">https://github.com/vmware/pg_rewind</ulink>. <ulink url="https://github.com/vmware/pg_rewind">https://github.com/vmware/pg_rewind</ulink>.
If the <application>pg_rewind</application> If the <application>pg_rewind</application>
binary is not installed in the PostgreSQL <filename>bin</filename> directory, provide binary is not installed in the PostgreSQL <filename>bin</filename> directory, provide
its full path on the demotion candidate with <option>--force-rewind</option>. its full path on the demotion candidate with <option>--force-rewind</option>.
</para> </para>
<para> <para>
Note that building the 9.4 version of <application>pg_rewind</application> requires the PostgreSQL Note that building the 9.3/9.4 version of <application>pg_rewind</application> requires the PostgreSQL
source code. source code. Also, PostgreSQL 9.3 does not provide <varname>wal_log_hints</varname>,
meaning data checksums must have been enabled when the database was initialized.
</para> </para>
</sect2> </sect2>
@@ -320,9 +317,7 @@
</para> </para>
<para> <para>
If &repmgrd; is in use, it's worth double-checking that If &repmgrd; is in use, it's worth double-checking that
all nodes are unpaused by executing all nodes are unpaused by executing <command><link linkend="repmgr-daemon-status">repmgr-daemon-status</link></command>.
<command><link linkend="repmgr-service-status">repmgr service status</link></command>
(&repmgr; 4.2 - 4.4: <command><link linkend="repmgr-service-status">repmgr daemon status</link></command>).
</para> </para>
<note> <note>
@@ -345,7 +340,7 @@
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">
<listitem> <listitem>
<simpara> <simpara>
If using PostgreSQL 9.4, you should ensure that the shutdown command If using PostgreSQL 9.3 or 9.4, you should ensure that the shutdown command
is configured to use PostgreSQL's <varname>fast</varname> shutdown mode (the default in 9.5 is configured to use PostgreSQL's <varname>fast</varname> shutdown mode (the default in 9.5
and later). If relying on <command>pg_ctl</command> to perform database server operations, and later). If relying on <command>pg_ctl</command> to perform database server operations,
you should include <literal>-m fast</literal> in <varname>pg_ctl_options</varname> you should include <literal>-m fast</literal> in <varname>pg_ctl_options</varname>

View File

@@ -201,13 +201,9 @@ ALTER EXTENSION repmgr UPDATE</programlisting>
</para> </para>
<tip> <tip>
<para> <para>
If the &repmgr; upgrade requires a PostgreSQL restart, combine the &repmgr; upgrade If the &repmgr; upgrade requires a PostgreSQL restart, combine the &repmgr; upgrade
with a PostgreSQL minor version upgrade, which will require a restart in any case. with a PostgreSQL minor version upgrade, which will require a restart in any case.
</para> New PostgreSQL minor version are usually released every couple of months.
<para>
New PostgreSQL minor versions are usually released every couple of months;
see the <ulink url="https://www.postgresql.org/developer/roadmap/">Roadmap</ulink>
for the current schedule.
</para> </para>
</tip> </tip>
</sect2> </sect2>
@@ -220,9 +216,7 @@ ALTER EXTENSION repmgr UPDATE</programlisting>
<secondary>checking repmgrd status</secondary> <secondary>checking repmgrd status</secondary>
</indexterm> </indexterm>
<para> <para>
From <link linkend="release-4.2">repmgr 4.2</link>, once the upgrade is complete, execute the From <link linkend="release-4.2">repmgr 4.2</link>, once the upgrade is complete, execute the <command><link linkend="repmgr-daemon-status">repmgr daemon status</link></command>
<command><link linkend="repmgr-service-status">repmgr service status</link></command>
(&repmgr; 4.2 - 4.4: <command><link linkend="repmgr-service-status">repmgr daemon status</link></command>)
command (on any node) to show an overview of the status of &repmgrd; on all nodes. command (on any node) to show an overview of the status of &repmgrd; on all nodes.
</para> </para>
</sect2> </sect2>
@@ -273,29 +267,6 @@ ALTER EXTENSION repmgr UPDATE</programlisting>
</para> </para>
</tip> </tip>
<sect2 id="upgrading-pg-upgrade-standby" xreflabel="pg_upgrade and upgrading standbys">
<title>Upgrading standbys with pg_upgrade and rsync</title>
<para>
If you are intending to upgrade a standby using the <command>rsync</command> method described
in the <ulink url="https://www.postgresql.org/docs/current/pgupgrade.html#PGUPGRADE-STEP-REPLICAS">pg_upgrade documentation</ulink>,
you <emphasis>must</emphasis> ensure the standby's replication configuration is present and correct
before starting the standby.
</para>
<para>
Use <link linkend="repmgr-standby-clone">repmgr standby clone --replication-conf-only</link> to generate
the correct replication configuration.
</para>
<tip>
<para>
If upgrading from PostgreSQL 11 or earlier, be sure to delete <filename>recovery.conf</filename>, if present,
otherwise PostgreSQL will refuse to start.
</para>
</tip>
</sect2>
</sect1> </sect1>
@@ -312,12 +283,12 @@ ALTER EXTENSION repmgr UPDATE</programlisting>
<orderedlist> <orderedlist>
<listitem> <listitem>
<simpara> <simpara>
converting the <filename>repmgr.conf</filename> configuration files converting the repmgr.conf configuration files
</simpara> </simpara>
</listitem> </listitem>
<listitem> <listitem>
<simpara> <simpara>
upgrading the repmgr schema using <command>CREATE EXTENSION</command> (PostgreSQL 12 and earlier) upgrading the repmgr schema using <command>CREATE EXTENSION</command>
</simpara> </simpara>
</listitem> </listitem>
</orderedlist> </orderedlist>
@@ -446,13 +417,13 @@ ALTER EXTENSION repmgr UPDATE</programlisting>
<programlisting> <programlisting>
$ ./convert-config.pl /etc/repmgr.conf $ ./convert-config.pl /etc/repmgr.conf
node_id=2 node_id=2
node_name='node2' node_name=node2
conninfo='host=node2 dbname=repmgr user=repmgr connect_timeout=2' conninfo=host=node2 dbname=repmgr user=repmgr connect_timeout=2
pg_ctl_options='-l /var/log/postgres/startup.log' pg_ctl_options='-l /var/log/postgres/startup.log'
rsync_options='--exclude=postgresql.local.conf --archive' rsync_options=--exclude=postgresql.local.conf --archive
log_level='INFO' log_level=INFO
pg_basebackup_options='--no-slot' pg_basebackup_options=--no-slot
data_directory=''</programlisting> data_directory=</programlisting>
</para> </para>
<para> <para>
The converted file is printed to <literal>STDOUT</literal> and the original file is not The converted file is printed to <literal>STDOUT</literal> and the original file is not
@@ -461,31 +432,23 @@ ALTER EXTENSION repmgr UPDATE</programlisting>
<para> <para>
Please note that the the conversion script will add an empty Please note that the the conversion script will add an empty
placeholder parameter for <varname>data_directory</varname>, which placeholder parameter for <varname>data_directory</varname>, which
is a required parameter from &repmgr; 4. This must be manually modified to contain is a required parameter in repmgr4 and which <emphasis>must</emphasis>
the correct data directory. be provided.
</para> </para>
</sect3> </sect3>
</sect2> </sect2>
<sect2> <sect2>
<title>Upgrading the repmgr schema (PostgreSQL 12 and earlier)</title> <title>Upgrading the repmgr schema</title>
<para> <para>
Ensure &repmgrd; is not running, or any cron jobs which execute the Ensure &repmgrd; is not running, or any cron jobs which execute the
<command>repmgr</command> binary. <command>repmgr</command> binary.
</para> </para>
<para> <para>
Install the latest &repmgr; package; any <literal>repmgr 3.x</literal> packages Install <literal>repmgr 4</literal> packages; any <literal>repmgr 3.x</literal> packages
should be uninstalled (if not automatically uninstalled already by your packaging system). should be uninstalled (if not automatically uninstalled already by your packaging system).
</para> </para>
<sect3> <sect3>
<title>Upgrading from repmgr 3.1.1 or earlier</title> <title>Upgrading from repmgr 3.1.1 or earlier</title>
<tip>
<simpara>
If you don't care about any data from the existing &repmgr; installation,
(e.g. the contents of the <structname>events</structname> and <structname>monitoring</structname>
tables), the following steps can be skipped; proceed to <xref linkend="upgrade-reregister-nodes"/>.
</simpara>
</tip>
<para> <para>
If your repmgr version is 3.1.1 or earlier, you will need to update If your repmgr version is 3.1.1 or earlier, you will need to update
the schema to the latest version in the 3.x series (3.3.2) before the schema to the latest version in the 3.x series (3.3.2) before
@@ -497,10 +460,10 @@ ALTER EXTENSION repmgr UPDATE</programlisting>
<itemizedlist spacing="compact" mark="bullet"> <itemizedlist spacing="compact" mark="bullet">
<listitem> <listitem>
<simpara> <simpara>
<ulink url="https://raw.githubusercontent.com/EnterpriseDB/repmgr/REL3_3_STABLE/sql/repmgr3.0_repmgr3.1.sql">repmgr3.0_repmgr3.1.sql</ulink></simpara> <ulink url="https://raw.githubusercontent.com/2ndQuadrant/repmgr/REL3_3_STABLE/sql/repmgr3.0_repmgr3.1.sql">repmgr3.0_repmgr3.1.sql</ulink></simpara>
</listitem> </listitem>
<listitem> <listitem>
<simpara><ulink url="https://raw.githubusercontent.com/EnterpriseDB/repmgr/REL3_3_STABLE/sql/repmgr3.1.1_repmgr3.1.2.sql">repmgr3.1.1_repmgr3.1.2.sql</ulink></simpara> <simpara><ulink url="https://raw.githubusercontent.com/2ndQuadrant/repmgr/REL3_3_STABLE/sql/repmgr3.1.1_repmgr3.1.2.sql">repmgr3.1.1_repmgr3.1.2.sql</ulink></simpara>
</listitem> </listitem>
</itemizedlist> </itemizedlist>
</para> </para>
@@ -514,37 +477,19 @@ ALTER EXTENSION repmgr UPDATE</programlisting>
<para> <para>
In the database used by the existing &repmgr; installation, execute: In the database used by the existing &repmgr; installation, execute:
<programlisting> <programlisting>
CREATE EXTENSION repmgr FROM unpackaged</programlisting> CREATE EXTENSION repmgr FROM unpackaged;</programlisting>
</para> </para>
<para> <para>
This will move and convert all objects from the existing schema This will move and convert all objects from the existing schema
into the new, standard <literal>repmgr</literal> schema. into the new, standard <literal>repmgr</literal> schema.
</para> </para>
<note> <note>
<simpara>There must be only one schema matching <literal>repmgr_%</literal> in the <simpara>there must be only one schema matching <literal>repmgr_%</literal> in the
database, otherwise this step may not work. database, otherwise this step may not work.
</simpara> </simpara>
</note> </note>
</sect3> </sect3>
</sect2> <sect3>
<sect2>
<title>Upgrading the repmgr schema (PostgreSQL 13 and later)</title>
<para>
Beginning with PostgreSQL 13, the <command>CREATE EXTENSION ... FROM unpackaged</command>
syntax is no longer available. In the unlikely event you have ended up with an
installation running PostgreSQL 13 or later and containing the legacy &repmgr;
schema, there is no convenient way of upgrading this; instead you'll just need
to re-register the nodes as detailed in <link linkend="upgrade-reregister-nodes">the following section</link>,
which will create the &repmgr; extension automatically.
</para>
<para>
Any historical data you wish to retain (e.g. the contents of the <structname>events</structname>
and <structname>monitoring</structname> tables) will need to be exported manually.
</para>
</sect2>
<sect2 id="upgrade-reregister-nodes">
<title>Re-register each node</title> <title>Re-register each node</title>
<para> <para>
This is necessary to update the <literal>repmgr</literal> metadata with some additional items. This is necessary to update the <literal>repmgr</literal> metadata with some additional items.
@@ -554,10 +499,6 @@ ALTER EXTENSION repmgr UPDATE</programlisting>
<programlisting> <programlisting>
repmgr primary register -f /etc/repmgr.conf --force</programlisting> repmgr primary register -f /etc/repmgr.conf --force</programlisting>
</para> </para>
<para>
If not already present (e.g. after executing <command>CREATE EXTENSION repmgr FROM unpackaged</command>),
the &repmgr; extension will be automatically created by <command>repmgr primary register</command>.
</para>
<para> <para>
On each standby node, execute e.g. On each standby node, execute e.g.
<programlisting> <programlisting>
@@ -570,20 +511,18 @@ ALTER EXTENSION repmgr UPDATE</programlisting>
<para> <para>
The original <literal>repmgr_$cluster</literal> schema can be dropped at any time. The original <literal>repmgr_$cluster</literal> schema can be dropped at any time.
</para> </para>
<tip>
<simpara>
If you don't care about any data from the existing &repmgr; installation,
(e.g. the contents of the <structname>events</structname> and <structname>monitoring</structname>
tables), the manual <command>CREATE EXTENSION</command> step can be skipped; just re-register
each node, starting with the primary node, and the <literal>repmgr</literal> extension will be
automatically created.
</simpara>
</tip>
</sect3>
</sect2> </sect2>
<sect2 id="upgrade-drop-repmgr-cluster-schema">
<title>Drop the legacy repmgr schema</title>
<para>
Once the cluster has been registered with the current &repmgr; version, the legacy
<literal>repmgr_$cluster</literal> schema can be dropped at any time with:
<programlisting>
DROP SCHEMA repmgr_$cluster CASCADE</programlisting>
(substitute <literal>$cluster</literal> with the value of the <varname>clustername</varname>
variable used in &repmgr; 3.x).
</para>
</sect2>
</sect1> </sect1>
</chapter> </chapter>

View File

@@ -1,6 +1,6 @@
/* /*
* errcode.h * errcode.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

View File

@@ -32,6 +32,18 @@ SELECT * FROM repmgr.show_nodes;
(0 rows) (0 rows)
-- functions -- functions
SELECT repmgr.am_bdr_failover_handler(-1);
am_bdr_failover_handler
-------------------------
(1 row)
SELECT repmgr.am_bdr_failover_handler(NULL);
am_bdr_failover_handler
-------------------------
(1 row)
SELECT repmgr.get_new_primary(); SELECT repmgr.get_new_primary();
get_new_primary get_new_primary
----------------- -----------------
@@ -80,3 +92,9 @@ SELECT repmgr.standby_set_last_updated();
(1 row) (1 row)
SELECT repmgr.unset_bdr_failover_handler();
unset_bdr_failover_handler
----------------------------
(1 row)

2
log.c
View File

@@ -1,6 +1,6 @@
/* /*
* log.c - Logging methods * log.c - Logging methods
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

2
log.h
View File

@@ -1,6 +1,6 @@
/* /*
* log.h * log.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

View File

@@ -1,5 +0,0 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
ALTER FUNCTION set_repmgrd_pid(INT, TEXT) RETURNS NULL ON NULL INPUT;

View File

@@ -1,5 +0,0 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
DROP FUNCTION am_bdr_failover_handler(INT);
DROP FUNCTION unset_bdr_failover_handler();

View File

@@ -1,214 +0,0 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
CREATE TABLE repmgr.nodes (
node_id INTEGER PRIMARY KEY,
upstream_node_id INTEGER NULL REFERENCES nodes (node_id) DEFERRABLE,
active BOOLEAN NOT NULL DEFAULT TRUE,
node_name TEXT NOT NULL,
type TEXT NOT NULL CHECK (type IN('primary','standby','witness','bdr')),
location TEXT NOT NULL DEFAULT 'default',
priority INT NOT NULL DEFAULT 100,
conninfo TEXT NOT NULL,
repluser VARCHAR(63) NOT NULL,
slot_name TEXT NULL,
config_file TEXT NOT NULL
);
CREATE TABLE repmgr.events (
node_id INTEGER NOT NULL,
event TEXT NOT NULL,
successful BOOLEAN NOT NULL DEFAULT TRUE,
event_timestamp TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
details TEXT NULL
);
DO $repmgr$
DECLARE
DECLARE server_version_num INT;
BEGIN
SELECT setting
FROM pg_catalog.pg_settings
WHERE name = 'server_version_num'
INTO server_version_num;
IF server_version_num >= 90400 THEN
EXECUTE $repmgr_func$
CREATE TABLE repmgr.monitoring_history (
primary_node_id INTEGER NOT NULL,
standby_node_id INTEGER NOT NULL,
last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL,
last_apply_time TIMESTAMP WITH TIME ZONE,
last_wal_primary_location PG_LSN NOT NULL,
last_wal_standby_location PG_LSN,
replication_lag BIGINT NOT NULL,
apply_lag BIGINT NOT NULL
)
$repmgr_func$;
ELSE
EXECUTE $repmgr_func$
CREATE TABLE repmgr.monitoring_history (
primary_node_id INTEGER NOT NULL,
standby_node_id INTEGER NOT NULL,
last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL,
last_apply_time TIMESTAMP WITH TIME ZONE,
last_wal_primary_location TEXT NOT NULL,
last_wal_standby_location TEXT,
replication_lag BIGINT NOT NULL,
apply_lag BIGINT NOT NULL
)
$repmgr_func$;
END IF;
END$repmgr$;
CREATE INDEX idx_monitoring_history_time
ON repmgr.monitoring_history (last_monitor_time, standby_node_id);
CREATE VIEW repmgr.show_nodes AS
SELECT n.node_id,
n.node_name,
n.active,
n.upstream_node_id,
un.node_name AS upstream_node_name,
n.type,
n.priority,
n.conninfo
FROM repmgr.nodes n
LEFT JOIN repmgr.nodes un
ON un.node_id = n.upstream_node_id;
CREATE TABLE repmgr.voting_term (
term INT NOT NULL
);
CREATE UNIQUE INDEX voting_term_restrict
ON repmgr.voting_term ((TRUE));
CREATE RULE voting_term_delete AS
ON DELETE TO repmgr.voting_term
DO INSTEAD NOTHING;
/* ================= */
/* repmgrd functions */
/* ================= */
/* monitoring functions */
CREATE FUNCTION set_local_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION get_local_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION standby_set_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'standby_set_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION standby_get_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'standby_get_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_last_seen(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_last_seen()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_upstream_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_upstream_node_id'
LANGUAGE C STRICT;
/* failover functions */
CREATE FUNCTION notify_follow_primary(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'notify_follow_primary'
LANGUAGE C STRICT;
CREATE FUNCTION get_new_primary()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_new_primary'
LANGUAGE C STRICT;
CREATE FUNCTION reset_voting_status()
RETURNS VOID
AS 'MODULE_PATHNAME', 'reset_voting_status'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_repmgrd_pid'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pidfile()
RETURNS TEXT
AS 'MODULE_PATHNAME', 'get_repmgrd_pidfile'
LANGUAGE C STRICT;
CREATE FUNCTION set_repmgrd_pid(INT, TEXT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_repmgrd_pid'
LANGUAGE C CALLED ON NULL INPUT;
CREATE FUNCTION repmgrd_is_running()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_running'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_pause(BOOL)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgrd_pause'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_is_paused()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_paused'
LANGUAGE C STRICT;
CREATE FUNCTION get_wal_receiver_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_wal_receiver_pid'
LANGUAGE C STRICT;
/* views */
CREATE VIEW repmgr.replication_status AS
SELECT m.primary_node_id, m.standby_node_id, n.node_name AS standby_name,
n.type AS node_type, n.active, last_monitor_time,
CASE WHEN n.type='standby' THEN m.last_wal_primary_location ELSE NULL END AS last_wal_primary_location,
m.last_wal_standby_location,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.replication_lag) ELSE NULL END AS replication_lag,
CASE WHEN n.type='standby' THEN
CASE WHEN replication_lag > 0 THEN age(now(), m.last_apply_time) ELSE '0'::INTERVAL END
ELSE NULL
END AS replication_time_lag,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.apply_lag) ELSE NULL END AS apply_lag,
AGE(NOW(), CASE WHEN pg_catalog.pg_is_in_recovery() THEN repmgr.standby_get_last_updated() ELSE m.last_monitor_time END) AS communication_time_lag
FROM repmgr.monitoring_history m
JOIN repmgr.nodes n ON m.standby_node_id = n.node_id
WHERE (m.standby_node_id, m.last_monitor_time) IN (
SELECT m1.standby_node_id, MAX(m1.last_monitor_time)
FROM repmgr.monitoring_history m1 GROUP BY 1
);

View File

@@ -1,7 +0,0 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
SELECT pg_catalog.pg_extension_config_dump('repmgr.nodes', '');
SELECT pg_catalog.pg_extension_config_dump('repmgr.events', '');
SELECT pg_catalog.pg_extension_config_dump('repmgr.monitoring_history', '');

View File

@@ -1,214 +0,0 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
CREATE TABLE repmgr.nodes (
node_id INTEGER PRIMARY KEY,
upstream_node_id INTEGER NULL REFERENCES nodes (node_id) DEFERRABLE,
active BOOLEAN NOT NULL DEFAULT TRUE,
node_name TEXT NOT NULL,
type TEXT NOT NULL CHECK (type IN('primary','standby','witness','bdr')),
location TEXT NOT NULL DEFAULT 'default',
priority INT NOT NULL DEFAULT 100,
conninfo TEXT NOT NULL,
repluser VARCHAR(63) NOT NULL,
slot_name TEXT NULL,
config_file TEXT NOT NULL
);
CREATE TABLE repmgr.events (
node_id INTEGER NOT NULL,
event TEXT NOT NULL,
successful BOOLEAN NOT NULL DEFAULT TRUE,
event_timestamp TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
details TEXT NULL
);
DO $repmgr$
DECLARE
DECLARE server_version_num INT;
BEGIN
SELECT setting
FROM pg_catalog.pg_settings
WHERE name = 'server_version_num'
INTO server_version_num;
IF server_version_num >= 90400 THEN
EXECUTE $repmgr_func$
CREATE TABLE repmgr.monitoring_history (
primary_node_id INTEGER NOT NULL,
standby_node_id INTEGER NOT NULL,
last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL,
last_apply_time TIMESTAMP WITH TIME ZONE,
last_wal_primary_location PG_LSN NOT NULL,
last_wal_standby_location PG_LSN,
replication_lag BIGINT NOT NULL,
apply_lag BIGINT NOT NULL
)
$repmgr_func$;
ELSE
EXECUTE $repmgr_func$
CREATE TABLE repmgr.monitoring_history (
primary_node_id INTEGER NOT NULL,
standby_node_id INTEGER NOT NULL,
last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL,
last_apply_time TIMESTAMP WITH TIME ZONE,
last_wal_primary_location TEXT NOT NULL,
last_wal_standby_location TEXT,
replication_lag BIGINT NOT NULL,
apply_lag BIGINT NOT NULL
)
$repmgr_func$;
END IF;
END$repmgr$;
CREATE INDEX idx_monitoring_history_time
ON repmgr.monitoring_history (last_monitor_time, standby_node_id);
CREATE VIEW repmgr.show_nodes AS
SELECT n.node_id,
n.node_name,
n.active,
n.upstream_node_id,
un.node_name AS upstream_node_name,
n.type,
n.priority,
n.conninfo
FROM repmgr.nodes n
LEFT JOIN repmgr.nodes un
ON un.node_id = n.upstream_node_id;
CREATE TABLE repmgr.voting_term (
term INT NOT NULL
);
CREATE UNIQUE INDEX voting_term_restrict
ON repmgr.voting_term ((TRUE));
CREATE RULE voting_term_delete AS
ON DELETE TO repmgr.voting_term
DO INSTEAD NOTHING;
/* ================= */
/* repmgrd functions */
/* ================= */
/* monitoring functions */
CREATE FUNCTION set_local_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION get_local_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION standby_set_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'standby_set_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION standby_get_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'standby_get_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_last_seen(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_last_seen()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_upstream_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_upstream_node_id'
LANGUAGE C STRICT;
/* failover functions */
CREATE FUNCTION notify_follow_primary(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'notify_follow_primary'
LANGUAGE C STRICT;
CREATE FUNCTION get_new_primary()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_new_primary'
LANGUAGE C STRICT;
CREATE FUNCTION reset_voting_status()
RETURNS VOID
AS 'MODULE_PATHNAME', 'reset_voting_status'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_repmgrd_pid'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pidfile()
RETURNS TEXT
AS 'MODULE_PATHNAME', 'get_repmgrd_pidfile'
LANGUAGE C STRICT;
CREATE FUNCTION set_repmgrd_pid(INT, TEXT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_repmgrd_pid'
LANGUAGE C CALLED ON NULL INPUT;
CREATE FUNCTION repmgrd_is_running()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_running'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_pause(BOOL)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgrd_pause'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_is_paused()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_paused'
LANGUAGE C STRICT;
CREATE FUNCTION get_wal_receiver_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_wal_receiver_pid'
LANGUAGE C STRICT;
/* views */
CREATE VIEW repmgr.replication_status AS
SELECT m.primary_node_id, m.standby_node_id, n.node_name AS standby_name,
n.type AS node_type, n.active, last_monitor_time,
CASE WHEN n.type='standby' THEN m.last_wal_primary_location ELSE NULL END AS last_wal_primary_location,
m.last_wal_standby_location,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.replication_lag) ELSE NULL END AS replication_lag,
CASE WHEN n.type='standby' THEN
CASE WHEN replication_lag > 0 THEN age(now(), m.last_apply_time) ELSE '0'::INTERVAL END
ELSE NULL
END AS replication_time_lag,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.apply_lag) ELSE NULL END AS apply_lag,
AGE(NOW(), CASE WHEN pg_catalog.pg_is_in_recovery() THEN repmgr.standby_get_last_updated() ELSE m.last_monitor_time END) AS communication_time_lag
FROM repmgr.monitoring_history m
JOIN repmgr.nodes n ON m.standby_node_id = n.node_id
WHERE (m.standby_node_id, m.last_monitor_time) IN (
SELECT m1.standby_node_id, MAX(m1.last_monitor_time)
FROM repmgr.monitoring_history m1 GROUP BY 1
);

View File

@@ -1,64 +0,0 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
CREATE OR REPLACE FUNCTION set_local_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_set_local_node_id'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION repmgr.get_local_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_local_node_id'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION standby_set_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'repmgr_standby_set_last_updated'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION standby_get_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'repmgr_standby_get_last_updated'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION set_upstream_last_seen(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_set_upstream_last_seen'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION get_upstream_last_seen()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_upstream_last_seen'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION get_upstream_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_upstream_node_id'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION set_upstream_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_set_upstream_node_id'
LANGUAGE C STRICT;
/* failover functions */
CREATE OR REPLACE FUNCTION notify_follow_primary(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_notify_follow_primary'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION get_new_primary()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_new_primary'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION reset_voting_status()
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_reset_voting_status'
LANGUAGE C STRICT;
CREATE OR REPLACE FUNCTION get_wal_receiver_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_wal_receiver_pid'
LANGUAGE C STRICT;

View File

@@ -1,192 +0,0 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
CREATE TABLE repmgr.nodes (
node_id INTEGER PRIMARY KEY,
upstream_node_id INTEGER NULL REFERENCES nodes (node_id) DEFERRABLE,
active BOOLEAN NOT NULL DEFAULT TRUE,
node_name TEXT NOT NULL,
type TEXT NOT NULL CHECK (type IN('primary','standby','witness','bdr')),
location TEXT NOT NULL DEFAULT 'default',
priority INT NOT NULL DEFAULT 100,
conninfo TEXT NOT NULL,
repluser VARCHAR(63) NOT NULL,
slot_name TEXT NULL,
config_file TEXT NOT NULL
);
SELECT pg_catalog.pg_extension_config_dump('repmgr.nodes', '');
CREATE TABLE repmgr.events (
node_id INTEGER NOT NULL,
event TEXT NOT NULL,
successful BOOLEAN NOT NULL DEFAULT TRUE,
event_timestamp TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
details TEXT NULL
);
SELECT pg_catalog.pg_extension_config_dump('repmgr.events', '');
CREATE TABLE repmgr.monitoring_history (
primary_node_id INTEGER NOT NULL,
standby_node_id INTEGER NOT NULL,
last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL,
last_apply_time TIMESTAMP WITH TIME ZONE,
last_wal_primary_location PG_LSN NOT NULL,
last_wal_standby_location PG_LSN,
replication_lag BIGINT NOT NULL,
apply_lag BIGINT NOT NULL
);
CREATE INDEX idx_monitoring_history_time
ON repmgr.monitoring_history (last_monitor_time, standby_node_id);
SELECT pg_catalog.pg_extension_config_dump('repmgr.monitoring_history', '');
CREATE VIEW repmgr.show_nodes AS
SELECT n.node_id,
n.node_name,
n.active,
n.upstream_node_id,
un.node_name AS upstream_node_name,
n.type,
n.priority,
n.conninfo
FROM repmgr.nodes n
LEFT JOIN repmgr.nodes un
ON un.node_id = n.upstream_node_id;
CREATE TABLE repmgr.voting_term (
term INT NOT NULL
);
CREATE UNIQUE INDEX voting_term_restrict
ON repmgr.voting_term ((TRUE));
CREATE RULE voting_term_delete AS
ON DELETE TO repmgr.voting_term
DO INSTEAD NOTHING;
/* ================= */
/* repmgrd functions */
/* ================= */
/* monitoring functions */
CREATE FUNCTION set_local_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION get_local_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION standby_set_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'standby_set_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION standby_get_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'standby_get_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_last_seen(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_last_seen()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_upstream_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_upstream_node_id'
LANGUAGE C STRICT;
/* failover functions */
CREATE FUNCTION notify_follow_primary(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'notify_follow_primary'
LANGUAGE C STRICT;
CREATE FUNCTION get_new_primary()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_new_primary'
LANGUAGE C STRICT;
CREATE FUNCTION reset_voting_status()
RETURNS VOID
AS 'MODULE_PATHNAME', 'reset_voting_status'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_repmgrd_pid'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pidfile()
RETURNS TEXT
AS 'MODULE_PATHNAME', 'get_repmgrd_pidfile'
LANGUAGE C STRICT;
CREATE FUNCTION set_repmgrd_pid(INT, TEXT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_repmgrd_pid'
LANGUAGE C CALLED ON NULL INPUT;
CREATE FUNCTION repmgrd_is_running()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_running'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_pause(BOOL)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgrd_pause'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_is_paused()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_paused'
LANGUAGE C STRICT;
CREATE FUNCTION get_wal_receiver_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_wal_receiver_pid'
LANGUAGE C STRICT;
/* views */
CREATE VIEW repmgr.replication_status AS
SELECT m.primary_node_id, m.standby_node_id, n.node_name AS standby_name,
n.type AS node_type, n.active, last_monitor_time,
CASE WHEN n.type='standby' THEN m.last_wal_primary_location ELSE NULL END AS last_wal_primary_location,
m.last_wal_standby_location,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.replication_lag) ELSE NULL END AS replication_lag,
CASE WHEN n.type='standby' THEN
CASE WHEN replication_lag > 0 THEN age(now(), m.last_apply_time) ELSE '0'::INTERVAL END
ELSE NULL
END AS replication_time_lag,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.apply_lag) ELSE NULL END AS apply_lag,
AGE(NOW(), CASE WHEN pg_catalog.pg_is_in_recovery() THEN repmgr.standby_get_last_updated() ELSE m.last_monitor_time END) AS communication_time_lag
FROM repmgr.monitoring_history m
JOIN repmgr.nodes n ON m.standby_node_id = n.node_id
WHERE (m.standby_node_id, m.last_monitor_time) IN (
SELECT m1.standby_node_id, MAX(m1.last_monitor_time)
FROM repmgr.monitoring_history m1 GROUP BY 1
);

View File

@@ -1,192 +0,0 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
CREATE TABLE repmgr.nodes (
node_id INTEGER PRIMARY KEY,
upstream_node_id INTEGER NULL REFERENCES nodes (node_id) DEFERRABLE,
active BOOLEAN NOT NULL DEFAULT TRUE,
node_name TEXT NOT NULL,
type TEXT NOT NULL CHECK (type IN('primary','standby','witness','bdr')),
location TEXT NOT NULL DEFAULT 'default',
priority INT NOT NULL DEFAULT 100,
conninfo TEXT NOT NULL,
repluser VARCHAR(63) NOT NULL,
slot_name TEXT NULL,
config_file TEXT NOT NULL
);
SELECT pg_catalog.pg_extension_config_dump('repmgr.nodes', '');
CREATE TABLE repmgr.events (
node_id INTEGER NOT NULL,
event TEXT NOT NULL,
successful BOOLEAN NOT NULL DEFAULT TRUE,
event_timestamp TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
details TEXT NULL
);
SELECT pg_catalog.pg_extension_config_dump('repmgr.events', '');
CREATE TABLE repmgr.monitoring_history (
primary_node_id INTEGER NOT NULL,
standby_node_id INTEGER NOT NULL,
last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL,
last_apply_time TIMESTAMP WITH TIME ZONE,
last_wal_primary_location PG_LSN NOT NULL,
last_wal_standby_location PG_LSN,
replication_lag BIGINT NOT NULL,
apply_lag BIGINT NOT NULL
);
CREATE INDEX idx_monitoring_history_time
ON repmgr.monitoring_history (last_monitor_time, standby_node_id);
SELECT pg_catalog.pg_extension_config_dump('repmgr.monitoring_history', '');
CREATE VIEW repmgr.show_nodes AS
SELECT n.node_id,
n.node_name,
n.active,
n.upstream_node_id,
un.node_name AS upstream_node_name,
n.type,
n.priority,
n.conninfo
FROM repmgr.nodes n
LEFT JOIN repmgr.nodes un
ON un.node_id = n.upstream_node_id;
CREATE TABLE repmgr.voting_term (
term INT NOT NULL
);
CREATE UNIQUE INDEX voting_term_restrict
ON repmgr.voting_term ((TRUE));
CREATE RULE voting_term_delete AS
ON DELETE TO repmgr.voting_term
DO INSTEAD NOTHING;
/* ================= */
/* repmgrd functions */
/* ================= */
/* monitoring functions */
CREATE FUNCTION set_local_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_set_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION get_local_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION standby_set_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'repmgr_standby_set_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION standby_get_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'repmgr_standby_get_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_last_seen(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_set_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_last_seen()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_upstream_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_set_upstream_node_id'
LANGUAGE C STRICT;
/* failover functions */
CREATE FUNCTION notify_follow_primary(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_notify_follow_primary'
LANGUAGE C STRICT;
CREATE FUNCTION get_new_primary()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_new_primary'
LANGUAGE C STRICT;
CREATE FUNCTION reset_voting_status()
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_reset_voting_status'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_repmgrd_pid'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pidfile()
RETURNS TEXT
AS 'MODULE_PATHNAME', 'get_repmgrd_pidfile'
LANGUAGE C STRICT;
CREATE FUNCTION set_repmgrd_pid(INT, TEXT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_repmgrd_pid'
LANGUAGE C CALLED ON NULL INPUT;
CREATE FUNCTION repmgrd_is_running()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_running'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_pause(BOOL)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgrd_pause'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_is_paused()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_paused'
LANGUAGE C STRICT;
CREATE FUNCTION get_wal_receiver_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_wal_receiver_pid'
LANGUAGE C STRICT;
/* views */
CREATE VIEW repmgr.replication_status AS
SELECT m.primary_node_id, m.standby_node_id, n.node_name AS standby_name,
n.type AS node_type, n.active, last_monitor_time,
CASE WHEN n.type='standby' THEN m.last_wal_primary_location ELSE NULL END AS last_wal_primary_location,
m.last_wal_standby_location,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.replication_lag) ELSE NULL END AS replication_lag,
CASE WHEN n.type='standby' THEN
CASE WHEN replication_lag > 0 THEN age(now(), m.last_apply_time) ELSE '0'::INTERVAL END
ELSE NULL
END AS replication_time_lag,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.apply_lag) ELSE NULL END AS apply_lag,
AGE(NOW(), CASE WHEN pg_catalog.pg_is_in_recovery() THEN repmgr.standby_get_last_updated() ELSE m.last_monitor_time END) AS communication_time_lag
FROM repmgr.monitoring_history m
JOIN repmgr.nodes n ON m.standby_node_id = n.node_id
WHERE (m.standby_node_id, m.last_monitor_time) IN (
SELECT m1.standby_node_id, MAX(m1.last_monitor_time)
FROM repmgr.monitoring_history m1 GROUP BY 1
);

View File

@@ -1,265 +0,0 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
-- extract the current schema name
-- NOTE: this assumes there will be only one schema matching 'repmgr_%';
-- user is responsible for ensuring this is the case
CREATE TEMPORARY TABLE repmgr_old_schema (schema_name TEXT);
INSERT INTO repmgr_old_schema (schema_name)
SELECT nspname AS schema_name
FROM pg_catalog.pg_namespace
WHERE nspname LIKE 'repmgr_%'
LIMIT 1;
-- move old objects into new schema
DO $repmgr$
DECLARE
old_schema TEXT;
BEGIN
SELECT schema_name FROM repmgr_old_schema
INTO old_schema;
EXECUTE format('ALTER TABLE %I.repl_nodes SET SCHEMA repmgr', old_schema);
EXECUTE format('ALTER TABLE %I.repl_events SET SCHEMA repmgr', old_schema);
EXECUTE format('ALTER TABLE %I.repl_monitor SET SCHEMA repmgr', old_schema);
EXECUTE format('DROP VIEW IF EXISTS %I.repl_show_nodes', old_schema);
EXECUTE format('DROP VIEW IF EXISTS %I.repl_status', old_schema);
END$repmgr$;
-- convert "repmgr_$cluster.repl_nodes" to "repmgr.nodes"
CREATE TABLE repmgr.nodes (
node_id INTEGER PRIMARY KEY,
upstream_node_id INTEGER NULL REFERENCES repmgr.nodes (node_id) DEFERRABLE,
active BOOLEAN NOT NULL DEFAULT TRUE,
node_name TEXT NOT NULL,
type TEXT NOT NULL CHECK (type IN('primary','standby','witness','bdr')),
location TEXT NOT NULL DEFAULT 'default',
priority INT NOT NULL DEFAULT 100,
conninfo TEXT NOT NULL,
repluser VARCHAR(63) NOT NULL,
slot_name TEXT NULL,
config_file TEXT NOT NULL
);
INSERT INTO repmgr.nodes
(node_id, upstream_node_id, active, node_name, type, location, priority, conninfo, repluser, slot_name, config_file)
SELECT id, upstream_node_id, active, name,
CASE WHEN type = 'master' THEN 'primary' ELSE type END,
'default', priority, conninfo, 'unknown', slot_name, 'unknown'
FROM repmgr.repl_nodes
ORDER BY id;
-- convert "repmgr_$cluster.repl_event" to "event"
ALTER TABLE repmgr.repl_events RENAME TO events;
-- create new table "repmgr.voting_term"
CREATE TABLE repmgr.voting_term (
term INT NOT NULL
);
CREATE UNIQUE INDEX voting_term_restrict
ON repmgr.voting_term ((TRUE));
CREATE RULE voting_term_delete AS
ON DELETE TO repmgr.voting_term
DO INSTEAD NOTHING;
INSERT INTO repmgr.voting_term (term) VALUES (1);
-- convert "repmgr_$cluster.repl_monitor" to "monitoring_history"
DO $repmgr$
DECLARE
DECLARE server_version_num INT;
BEGIN
SELECT setting
FROM pg_catalog.pg_settings
WHERE name = 'server_version_num'
INTO server_version_num;
IF server_version_num >= 90400 THEN
EXECUTE $repmgr_func$
CREATE TABLE repmgr.monitoring_history (
primary_node_id INTEGER NOT NULL,
standby_node_id INTEGER NOT NULL,
last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL,
last_apply_time TIMESTAMP WITH TIME ZONE,
last_wal_primary_location PG_LSN NOT NULL,
last_wal_standby_location PG_LSN,
replication_lag BIGINT NOT NULL,
apply_lag BIGINT NOT NULL
)
$repmgr_func$;
INSERT INTO repmgr.monitoring_history
(primary_node_id, standby_node_id, last_monitor_time, last_apply_time, last_wal_primary_location, last_wal_standby_location, replication_lag, apply_lag)
SELECT primary_node, standby_node, last_monitor_time, last_apply_time, last_wal_primary_location::pg_lsn, last_wal_standby_location::pg_lsn, replication_lag, apply_lag
FROM repmgr.repl_monitor;
ELSE
EXECUTE $repmgr_func$
CREATE TABLE repmgr.monitoring_history (
primary_node_id INTEGER NOT NULL,
standby_node_id INTEGER NOT NULL,
last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL,
last_apply_time TIMESTAMP WITH TIME ZONE,
last_wal_primary_location TEXT NOT NULL,
last_wal_standby_location TEXT,
replication_lag BIGINT NOT NULL,
apply_lag BIGINT NOT NULL
)
$repmgr_func$;
INSERT INTO repmgr.monitoring_history
(primary_node_id, standby_node_id, last_monitor_time, last_apply_time, last_wal_primary_location, last_wal_standby_location, replication_lag, apply_lag)
SELECT primary_node, standby_node, last_monitor_time, last_apply_time, last_wal_primary_location, last_wal_standby_location, replication_lag, apply_lag
FROM repmgr.repl_monitor;
END IF;
END$repmgr$;
CREATE INDEX idx_monitoring_history_time
ON repmgr.monitoring_history (last_monitor_time, standby_node_id);
CREATE VIEW repmgr.show_nodes AS
SELECT n.node_id,
n.node_name,
n.active,
n.upstream_node_id,
un.node_name AS upstream_node_name,
n.type,
n.priority,
n.conninfo
FROM repmgr.nodes n
LEFT JOIN repmgr.nodes un
ON un.node_id = n.upstream_node_id;
/* ================= */
/* repmgrd functions */
/* ================= */
/* monitoring functions */
CREATE FUNCTION set_local_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION get_local_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION standby_set_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'standby_set_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION standby_get_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'standby_get_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_last_seen(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_last_seen()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_upstream_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_upstream_node_id'
LANGUAGE C STRICT;
/* failover functions */
CREATE FUNCTION notify_follow_primary(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'notify_follow_primary'
LANGUAGE C STRICT;
CREATE FUNCTION get_new_primary()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_new_primary'
LANGUAGE C STRICT;
CREATE FUNCTION reset_voting_status()
RETURNS VOID
AS 'MODULE_PATHNAME', 'reset_voting_status'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_repmgrd_pid'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pidfile()
RETURNS TEXT
AS 'MODULE_PATHNAME', 'get_repmgrd_pidfile'
LANGUAGE C STRICT;
CREATE FUNCTION set_repmgrd_pid(INT, TEXT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_repmgrd_pid'
LANGUAGE C CALLED ON NULL INPUT;
CREATE FUNCTION repmgrd_is_running()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_running'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_pause(BOOL)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgrd_pause'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_is_paused()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_paused'
LANGUAGE C STRICT;
CREATE FUNCTION get_wal_receiver_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_wal_receiver_pid'
LANGUAGE C STRICT;
/* views */
CREATE VIEW repmgr.replication_status AS
SELECT m.primary_node_id, m.standby_node_id, n.node_name AS standby_name,
n.type AS node_type, n.active, last_monitor_time,
CASE WHEN n.type='standby' THEN m.last_wal_primary_location ELSE NULL END AS last_wal_primary_location,
m.last_wal_standby_location,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.replication_lag) ELSE NULL END AS replication_lag,
CASE WHEN n.type='standby' THEN
CASE WHEN replication_lag > 0 THEN age(now(), m.last_apply_time) ELSE '0'::INTERVAL END
ELSE NULL
END AS replication_time_lag,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.apply_lag) ELSE NULL END AS apply_lag,
AGE(NOW(), CASE WHEN pg_catalog.pg_is_in_recovery() THEN repmgr.standby_get_last_updated() ELSE m.last_monitor_time END) AS communication_time_lag
FROM repmgr.monitoring_history m
JOIN repmgr.nodes n ON m.standby_node_id = n.node_id
WHERE (m.standby_node_id, m.last_monitor_time) IN (
SELECT m1.standby_node_id, MAX(m1.last_monitor_time)
FROM repmgr.monitoring_history m1 GROUP BY 1
);
/* drop old tables */
DROP TABLE repmgr.repl_nodes;
DROP TABLE repmgr.repl_monitor;
-- remove temporary table
DROP TABLE repmgr_old_schema;

View File

@@ -1,245 +0,0 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
-- extract the current schema name
-- NOTE: this assumes there will be only one schema matching 'repmgr_%';
-- user is responsible for ensuring this is the case
CREATE TEMPORARY TABLE repmgr_old_schema (schema_name TEXT);
INSERT INTO repmgr_old_schema (schema_name)
SELECT nspname AS schema_name
FROM pg_catalog.pg_namespace
WHERE nspname LIKE 'repmgr_%'
LIMIT 1;
-- move old objects into new schema
DO $repmgr$
DECLARE
old_schema TEXT;
BEGIN
SELECT schema_name FROM repmgr_old_schema
INTO old_schema;
EXECUTE format('ALTER TABLE %I.repl_nodes SET SCHEMA repmgr', old_schema);
EXECUTE format('ALTER TABLE %I.repl_events SET SCHEMA repmgr', old_schema);
EXECUTE format('ALTER TABLE %I.repl_monitor SET SCHEMA repmgr', old_schema);
EXECUTE format('DROP VIEW IF EXISTS %I.repl_show_nodes', old_schema);
EXECUTE format('DROP VIEW IF EXISTS %I.repl_status', old_schema);
END$repmgr$;
-- convert "repmgr_$cluster.repl_nodes" to "repmgr.nodes"
CREATE TABLE repmgr.nodes (
node_id INTEGER PRIMARY KEY,
upstream_node_id INTEGER NULL REFERENCES repmgr.nodes (node_id) DEFERRABLE,
active BOOLEAN NOT NULL DEFAULT TRUE,
node_name TEXT NOT NULL,
type TEXT NOT NULL CHECK (type IN('primary','standby','witness','bdr')),
location TEXT NOT NULL DEFAULT 'default',
priority INT NOT NULL DEFAULT 100,
conninfo TEXT NOT NULL,
repluser VARCHAR(63) NOT NULL,
slot_name TEXT NULL,
config_file TEXT NOT NULL
);
INSERT INTO repmgr.nodes
(node_id, upstream_node_id, active, node_name, type, location, priority, conninfo, repluser, slot_name, config_file)
SELECT id, upstream_node_id, active, name,
CASE WHEN type = 'master' THEN 'primary' ELSE type END,
'default', priority, conninfo, 'unknown', slot_name, 'unknown'
FROM repmgr.repl_nodes
ORDER BY id;
-- convert "repmgr_$cluster.repl_event" to "event"
CREATE TABLE repmgr.events (
node_id INTEGER NOT NULL,
event TEXT NOT NULL,
successful BOOLEAN NOT NULL DEFAULT TRUE,
event_timestamp TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
details TEXT NULL
);
INSERT INTO repmgr.events
(node_id, event, successful, event_timestamp, details)
SELECT node_id, event, successful, event_timestamp, details
FROM repmgr.repl_events;
-- create new table "repmgr.voting_term"
CREATE TABLE repmgr.voting_term (
term INT NOT NULL
);
CREATE UNIQUE INDEX voting_term_restrict
ON repmgr.voting_term ((TRUE));
CREATE RULE voting_term_delete AS
ON DELETE TO repmgr.voting_term
DO INSTEAD NOTHING;
INSERT INTO repmgr.voting_term (term) VALUES (1);
-- convert "repmgr_$cluster.repl_monitor" to "monitoring_history"
CREATE TABLE repmgr.monitoring_history (
primary_node_id INTEGER NOT NULL,
standby_node_id INTEGER NOT NULL,
last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL,
last_apply_time TIMESTAMP WITH TIME ZONE,
last_wal_primary_location PG_LSN NOT NULL,
last_wal_standby_location PG_LSN,
replication_lag BIGINT NOT NULL,
apply_lag BIGINT NOT NULL
);
INSERT INTO repmgr.monitoring_history
(primary_node_id, standby_node_id, last_monitor_time, last_apply_time, last_wal_primary_location, last_wal_standby_location, replication_lag, apply_lag)
SELECT primary_node, standby_node, last_monitor_time, last_apply_time, last_wal_primary_location::pg_lsn, last_wal_standby_location::pg_lsn, replication_lag, apply_lag
FROM repmgr.repl_monitor;
CREATE INDEX idx_monitoring_history_time
ON repmgr.monitoring_history (last_monitor_time, standby_node_id);
CREATE VIEW repmgr.show_nodes AS
SELECT n.node_id,
n.node_name,
n.active,
n.upstream_node_id,
un.node_name AS upstream_node_name,
n.type,
n.priority,
n.conninfo
FROM repmgr.nodes n
LEFT JOIN repmgr.nodes un
ON un.node_id = n.upstream_node_id;
/* ================= */
/* repmgrd functions */
/* ================= */
/* monitoring functions */
CREATE FUNCTION set_local_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION get_local_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION standby_set_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'standby_set_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION standby_get_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'standby_get_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_last_seen(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_last_seen()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_upstream_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_upstream_node_id'
LANGUAGE C STRICT;
/* failover functions */
CREATE FUNCTION notify_follow_primary(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'notify_follow_primary'
LANGUAGE C STRICT;
CREATE FUNCTION get_new_primary()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_new_primary'
LANGUAGE C STRICT;
CREATE FUNCTION reset_voting_status()
RETURNS VOID
AS 'MODULE_PATHNAME', 'reset_voting_status'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_repmgrd_pid'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pidfile()
RETURNS TEXT
AS 'MODULE_PATHNAME', 'get_repmgrd_pidfile'
LANGUAGE C STRICT;
CREATE FUNCTION set_repmgrd_pid(INT, TEXT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_repmgrd_pid'
LANGUAGE C CALLED ON NULL INPUT;
CREATE FUNCTION repmgrd_is_running()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_running'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_pause(BOOL)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgrd_pause'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_is_paused()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_paused'
LANGUAGE C STRICT;
CREATE FUNCTION get_wal_receiver_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_wal_receiver_pid'
LANGUAGE C STRICT;
/* views */
CREATE VIEW repmgr.replication_status AS
SELECT m.primary_node_id, m.standby_node_id, n.node_name AS standby_name,
n.type AS node_type, n.active, last_monitor_time,
CASE WHEN n.type='standby' THEN m.last_wal_primary_location ELSE NULL END AS last_wal_primary_location,
m.last_wal_standby_location,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.replication_lag) ELSE NULL END AS replication_lag,
CASE WHEN n.type='standby' THEN
CASE WHEN replication_lag > 0 THEN age(now(), m.last_apply_time) ELSE '0'::INTERVAL END
ELSE NULL
END AS replication_time_lag,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.apply_lag) ELSE NULL END AS apply_lag,
AGE(NOW(), CASE WHEN pg_catalog.pg_is_in_recovery() THEN repmgr.standby_get_last_updated() ELSE m.last_monitor_time END) AS communication_time_lag
FROM repmgr.monitoring_history m
JOIN repmgr.nodes n ON m.standby_node_id = n.node_id
WHERE (m.standby_node_id, m.last_monitor_time) IN (
SELECT m1.standby_node_id, MAX(m1.last_monitor_time)
FROM repmgr.monitoring_history m1 GROUP BY 1
);
/* drop old tables */
DROP TABLE repmgr.repl_nodes;
DROP TABLE repmgr.repl_monitor;
DROP TABLE repmgr.repl_events;
-- remove temporary table
DROP TABLE repmgr_old_schema;

View File

@@ -1,245 +0,0 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
-- extract the current schema name
-- NOTE: this assumes there will be only one schema matching 'repmgr_%';
-- user is responsible for ensuring this is the case
CREATE TEMPORARY TABLE repmgr_old_schema (schema_name TEXT);
INSERT INTO repmgr_old_schema (schema_name)
SELECT nspname AS schema_name
FROM pg_catalog.pg_namespace
WHERE nspname LIKE 'repmgr_%'
LIMIT 1;
-- move old objects into new schema
DO $repmgr$
DECLARE
old_schema TEXT;
BEGIN
SELECT schema_name FROM repmgr_old_schema
INTO old_schema;
EXECUTE format('ALTER TABLE %I.repl_nodes SET SCHEMA repmgr', old_schema);
EXECUTE format('ALTER TABLE %I.repl_events SET SCHEMA repmgr', old_schema);
EXECUTE format('ALTER TABLE %I.repl_monitor SET SCHEMA repmgr', old_schema);
EXECUTE format('DROP VIEW IF EXISTS %I.repl_show_nodes', old_schema);
EXECUTE format('DROP VIEW IF EXISTS %I.repl_status', old_schema);
END$repmgr$;
-- convert "repmgr_$cluster.repl_nodes" to "repmgr.nodes"
CREATE TABLE repmgr.nodes (
node_id INTEGER PRIMARY KEY,
upstream_node_id INTEGER NULL REFERENCES repmgr.nodes (node_id) DEFERRABLE,
active BOOLEAN NOT NULL DEFAULT TRUE,
node_name TEXT NOT NULL,
type TEXT NOT NULL CHECK (type IN('primary','standby','witness','bdr')),
location TEXT NOT NULL DEFAULT 'default',
priority INT NOT NULL DEFAULT 100,
conninfo TEXT NOT NULL,
repluser VARCHAR(63) NOT NULL,
slot_name TEXT NULL,
config_file TEXT NOT NULL
);
INSERT INTO repmgr.nodes
(node_id, upstream_node_id, active, node_name, type, location, priority, conninfo, repluser, slot_name, config_file)
SELECT id, upstream_node_id, active, name,
CASE WHEN type = 'master' THEN 'primary' ELSE type END,
'default', priority, conninfo, 'unknown', slot_name, 'unknown'
FROM repmgr.repl_nodes
ORDER BY id;
-- convert "repmgr_$cluster.repl_event" to "event"
CREATE TABLE repmgr.events (
node_id INTEGER NOT NULL,
event TEXT NOT NULL,
successful BOOLEAN NOT NULL DEFAULT TRUE,
event_timestamp TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
details TEXT NULL
);
INSERT INTO repmgr.events
(node_id, event, successful, event_timestamp, details)
SELECT node_id, event, successful, event_timestamp, details
FROM repmgr.repl_events;
-- create new table "repmgr.voting_term"
CREATE TABLE repmgr.voting_term (
term INT NOT NULL
);
CREATE UNIQUE INDEX voting_term_restrict
ON repmgr.voting_term ((TRUE));
CREATE RULE voting_term_delete AS
ON DELETE TO repmgr.voting_term
DO INSTEAD NOTHING;
INSERT INTO repmgr.voting_term (term) VALUES (1);
-- convert "repmgr_$cluster.repl_monitor" to "monitoring_history"
CREATE TABLE repmgr.monitoring_history (
primary_node_id INTEGER NOT NULL,
standby_node_id INTEGER NOT NULL,
last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL,
last_apply_time TIMESTAMP WITH TIME ZONE,
last_wal_primary_location PG_LSN NOT NULL,
last_wal_standby_location PG_LSN,
replication_lag BIGINT NOT NULL,
apply_lag BIGINT NOT NULL
);
INSERT INTO repmgr.monitoring_history
(primary_node_id, standby_node_id, last_monitor_time, last_apply_time, last_wal_primary_location, last_wal_standby_location, replication_lag, apply_lag)
SELECT primary_node, standby_node, last_monitor_time, last_apply_time, last_wal_primary_location::pg_lsn, last_wal_standby_location::pg_lsn, replication_lag, apply_lag
FROM repmgr.repl_monitor;
CREATE INDEX idx_monitoring_history_time
ON repmgr.monitoring_history (last_monitor_time, standby_node_id);
CREATE VIEW repmgr.show_nodes AS
SELECT n.node_id,
n.node_name,
n.active,
n.upstream_node_id,
un.node_name AS upstream_node_name,
n.type,
n.priority,
n.conninfo
FROM repmgr.nodes n
LEFT JOIN repmgr.nodes un
ON un.node_id = n.upstream_node_id;
/* ================= */
/* repmgrd functions */
/* ================= */
/* monitoring functions */
CREATE FUNCTION set_local_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_set_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION get_local_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_local_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION standby_set_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'repmgr_standby_set_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION standby_get_last_updated()
RETURNS TIMESTAMP WITH TIME ZONE
AS 'MODULE_PATHNAME', 'repmgr_standby_get_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_last_seen(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_set_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_last_seen()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_upstream_last_seen'
LANGUAGE C STRICT;
CREATE FUNCTION get_upstream_node_id()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_upstream_node_id'
LANGUAGE C STRICT;
CREATE FUNCTION set_upstream_node_id(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_set_upstream_node_id'
LANGUAGE C STRICT;
/* failover functions */
CREATE FUNCTION notify_follow_primary(INT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_notify_follow_primary'
LANGUAGE C STRICT;
CREATE FUNCTION get_new_primary()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_new_primary'
LANGUAGE C STRICT;
CREATE FUNCTION reset_voting_status()
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgr_reset_voting_status'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'get_repmgrd_pid'
LANGUAGE C STRICT;
CREATE FUNCTION get_repmgrd_pidfile()
RETURNS TEXT
AS 'MODULE_PATHNAME', 'get_repmgrd_pidfile'
LANGUAGE C STRICT;
CREATE FUNCTION set_repmgrd_pid(INT, TEXT)
RETURNS VOID
AS 'MODULE_PATHNAME', 'set_repmgrd_pid'
LANGUAGE C CALLED ON NULL INPUT;
CREATE FUNCTION repmgrd_is_running()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_running'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_pause(BOOL)
RETURNS VOID
AS 'MODULE_PATHNAME', 'repmgrd_pause'
LANGUAGE C STRICT;
CREATE FUNCTION repmgrd_is_paused()
RETURNS BOOL
AS 'MODULE_PATHNAME', 'repmgrd_is_paused'
LANGUAGE C STRICT;
CREATE FUNCTION get_wal_receiver_pid()
RETURNS INT
AS 'MODULE_PATHNAME', 'repmgr_get_wal_receiver_pid'
LANGUAGE C STRICT;
/* views */
CREATE VIEW repmgr.replication_status AS
SELECT m.primary_node_id, m.standby_node_id, n.node_name AS standby_name,
n.type AS node_type, n.active, last_monitor_time,
CASE WHEN n.type='standby' THEN m.last_wal_primary_location ELSE NULL END AS last_wal_primary_location,
m.last_wal_standby_location,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.replication_lag) ELSE NULL END AS replication_lag,
CASE WHEN n.type='standby' THEN
CASE WHEN replication_lag > 0 THEN age(now(), m.last_apply_time) ELSE '0'::INTERVAL END
ELSE NULL
END AS replication_time_lag,
CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.apply_lag) ELSE NULL END AS apply_lag,
AGE(NOW(), CASE WHEN pg_catalog.pg_is_in_recovery() THEN repmgr.standby_get_last_updated() ELSE m.last_monitor_time END) AS communication_time_lag
FROM repmgr.monitoring_history m
JOIN repmgr.nodes n ON m.standby_node_id = n.node_id
WHERE (m.standby_node_id, m.last_monitor_time) IN (
SELECT m1.standby_node_id, MAX(m1.last_monitor_time)
FROM repmgr.monitoring_history m1 GROUP BY 1
);
/* drop old tables */
DROP TABLE repmgr.repl_nodes;
DROP TABLE repmgr.repl_monitor;
DROP TABLE repmgr.repl_events;
-- remove temporary table
DROP TABLE repmgr_old_schema;

557
repmgr-action-bdr.c Normal file
View File

@@ -0,0 +1,557 @@
/*
* repmgr-action-bdr.c
*
* Implements BDR-related actions for the repmgr command line utility
*
* Copyright (c) 2ndQuadrant, 2010-2019
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "repmgr.h"
#include "repmgr-client-global.h"
#include "repmgr-action-bdr.h"
/*
* do_bdr_register()
*
* As each BDR node is its own primary, registering a BDR node
* will create the repmgr metadata schema if necessary.
*/
void
do_bdr_register(void)
{
PGconn *conn = NULL;
BdrNodeInfoList bdr_nodes = T_BDR_NODE_INFO_LIST_INITIALIZER;
ExtensionStatus extension_status = REPMGR_UNKNOWN;
t_node_info node_info = T_NODE_INFO_INITIALIZER;
RecordStatus record_status = RECORD_NOT_FOUND;
PQExpBufferData event_details;
bool success = true;
char *dbname = NULL;
/* sanity-check configuration for BDR-compatability */
if (config_file_options.replication_type != REPLICATION_TYPE_BDR)
{
log_error(_("cannot run BDR REGISTER on a non-BDR node"));
exit(ERR_BAD_CONFIG);
}
dbname = pg_malloc0(MAXLEN);
if (dbname == NULL)
{
log_error(_("unable to allocate memory; terminating."));
exit(ERR_OUT_OF_MEMORY);
}
/* store the database name for future reference */
get_conninfo_value(config_file_options.conninfo, "dbname", dbname);
conn = establish_db_connection(config_file_options.conninfo, true);
if (!is_bdr_db(conn, NULL))
{
log_error(_("database \"%s\" is not BDR-enabled"), dbname);
log_hint(_("when using repmgr with BDR, the repmgr schema must be stored in the BDR database"));
PQfinish(conn);
pfree(dbname);
exit(ERR_BAD_CONFIG);
}
/* Check that there are at most 2 BDR nodes */
get_all_bdr_node_records(conn, &bdr_nodes);
if (bdr_nodes.node_count == 0)
{
log_error(_("database \"%s\" is BDR-enabled but no BDR nodes were found"), dbname);
PQfinish(conn);
pfree(dbname);
exit(ERR_BAD_CONFIG);
}
/* BDR 2 implementation is for 2 nodes only */
if (get_bdr_version_num() < 3 && bdr_nodes.node_count > 2)
{
log_error(_("repmgr can only support BDR 2.x clusters with 2 nodes"));
log_detail(_("this BDR cluster has %i nodes"), bdr_nodes.node_count);
PQfinish(conn);
pfree(dbname);
exit(ERR_BAD_CONFIG);
}
if (get_bdr_version_num() > 2)
{
log_error(_("\"repmgr bdr register\" is for BDR 2.x only"));
PQfinish(conn);
pfree(dbname);
exit(ERR_BAD_CONFIG);
}
/* check for a matching BDR node */
{
PQExpBufferData bdr_local_node_name;
bool node_match = false;
initPQExpBuffer(&bdr_local_node_name);
node_match = bdr_node_name_matches(conn, config_file_options.node_name, &bdr_local_node_name);
if (node_match == false)
{
if (strlen(bdr_local_node_name.data))
{
log_error(_("local node BDR node name is \"%s\", expected: \"%s\""),
bdr_local_node_name.data,
config_file_options.node_name);
log_hint(_("\"node_name\" in repmgr.conf must match \"node_name\" in bdr.bdr_nodes"));
}
else
{
log_error(_("local node does not report BDR node name"));
log_hint(_("ensure this is an active BDR node"));
}
PQfinish(conn);
pfree(dbname);
termPQExpBuffer(&bdr_local_node_name);
exit(ERR_BAD_CONFIG);
}
termPQExpBuffer(&bdr_local_node_name);
}
/* check whether repmgr extension exists, and there are no non-BDR nodes registered */
extension_status = get_repmgr_extension_status(conn, NULL);
if (extension_status == REPMGR_UNKNOWN)
{
log_error(_("unable to determine status of \"repmgr\" extension in database \"%s\""),
dbname);
PQfinish(conn);
pfree(dbname);
exit(ERR_BAD_CONFIG);
}
if (extension_status == REPMGR_UNAVAILABLE)
{
log_error(_("\"repmgr\" extension is not available"));
PQfinish(conn);
pfree(dbname);
exit(ERR_BAD_CONFIG);
}
if (extension_status == REPMGR_INSTALLED)
{
if (!is_bdr_repmgr(conn))
{
log_error(_("repmgr metadatabase contains records for non-BDR nodes"));
PQfinish(conn);
pfree(dbname);
exit(ERR_BAD_CONFIG);
}
}
else
{
log_debug("creating repmgr extension in database \"%s\"", dbname);
begin_transaction(conn);
if (!create_repmgr_extension(conn))
{
log_error(_("unable to create repmgr extension - see preceding error message(s); aborting"));
rollback_transaction(conn);
pfree(dbname);
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
commit_transaction(conn);
}
pfree(dbname);
if (bdr_node_has_repmgr_set(conn, config_file_options.node_name) == false)
{
log_debug("bdr_node_has_repmgr_set() = false");
bdr_node_set_repmgr_set(conn, config_file_options.node_name);
}
/*
* before adding the extension tables to the replication set, if any other
* BDR nodes exist, populate repmgr.nodes with a copy of existing entries
*
* currently we won't copy the contents of any other tables
*
*/
{
NodeInfoList local_node_records = T_NODE_INFO_LIST_INITIALIZER;
(void) get_all_node_records(conn, &local_node_records);
if (local_node_records.node_count == 0)
{
BdrNodeInfoList bdr_nodes = T_BDR_NODE_INFO_LIST_INITIALIZER;
BdrNodeInfoListCell *bdr_cell = NULL;
get_all_bdr_node_records(conn, &bdr_nodes);
if (bdr_nodes.node_count == 0)
{
log_error(_("unable to retrieve any BDR node records"));
log_detail("%s", PQerrorMessage(conn));
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
for (bdr_cell = bdr_nodes.head; bdr_cell; bdr_cell = bdr_cell->next)
{
PGconn *bdr_node_conn = NULL;
NodeInfoList existing_nodes = T_NODE_INFO_LIST_INITIALIZER;
NodeInfoListCell *cell = NULL;
ExtensionStatus other_node_extension_status = REPMGR_UNKNOWN;
/* skip the local node */
if (strncmp(node_info.node_name, bdr_cell->node_info->node_name, sizeof(node_info.node_name)) == 0)
{
continue;
}
log_debug("connecting to BDR node \"%s\" (conninfo: \"%s\")",
bdr_cell->node_info->node_name,
bdr_cell->node_info->node_local_dsn);
bdr_node_conn = establish_db_connection_quiet(bdr_cell->node_info->node_local_dsn);
if (PQstatus(bdr_node_conn) != CONNECTION_OK)
{
continue;
}
/* check repmgr schema exists, skip if not */
other_node_extension_status = get_repmgr_extension_status(bdr_node_conn, NULL);
if (other_node_extension_status != REPMGR_INSTALLED)
{
continue;
}
(void) get_all_node_records(bdr_node_conn, &existing_nodes);
for (cell = existing_nodes.head; cell; cell = cell->next)
{
log_debug("creating record for node \"%s\" (ID: %i)",
cell->node_info->node_name, cell->node_info->node_id);
create_node_record(conn, "bdr register", cell->node_info);
}
PQfinish(bdr_node_conn);
break;
}
}
}
/* Add the repmgr extension tables to a replication set */
if (get_bdr_version_num() < 3)
{
add_extension_tables_to_bdr_replication_set(conn);
}
else
{
/* this is the only table we need to replicate */
char *replication_set = get_default_bdr_replication_set(conn);
/*
* this probably won't happen, but we need to be sure we're using
* the replication set metadata correctly...
*/
if (conn == NULL)
{
log_error(_("unable to retrieve default BDR replication set"));
log_hint(_("see preceding messages"));
log_debug("check query in get_default_bdr_replication_set()");
exit(ERR_BAD_CONFIG);
}
if (is_table_in_bdr_replication_set(conn, "nodes", replication_set) == false)
{
add_table_to_bdr_replication_set(conn, "nodes", replication_set);
}
pfree(replication_set);
}
initPQExpBuffer(&event_details);
begin_transaction(conn);
/*
* we'll check if a record exists (even if the schema was just created),
* as there's a faint chance of a race condition
*/
record_status = get_node_record(conn, config_file_options.node_id, &node_info);
/* Update internal node record */
node_info.type = BDR;
node_info.node_id = config_file_options.node_id;
node_info.upstream_node_id = NO_UPSTREAM_NODE;
node_info.active = true;
node_info.priority = config_file_options.priority;
strncpy(node_info.node_name, config_file_options.node_name, sizeof(node_info.node_name));
strncpy(node_info.location, config_file_options.location, sizeof(node_info.location));
strncpy(node_info.conninfo, config_file_options.conninfo, sizeof(node_info.conninfo));
if (record_status == RECORD_FOUND)
{
bool node_updated = false;
/*
* At this point we will have established there are no non-BDR
* records, so no need to verify the node type
*/
if (!runtime_options.force)
{
log_error(_("this node is already registered"));
log_hint(_("use -F/--force to overwrite the existing node record"));
rollback_transaction(conn);
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
/*
* don't permit changing the node name - this must match the BDR node
* name set when the node was registered.
*/
if (strncmp(node_info.node_name, config_file_options.node_name, sizeof(node_info.node_name)) != 0)
{
log_error(_("a record for node %i is already registered with node_name \"%s\""),
config_file_options.node_id, node_info.node_name);
log_hint(_("node_name configured in repmgr.conf is \"%s\""), config_file_options.node_name);
rollback_transaction(conn);
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
node_updated = update_node_record(conn, "bdr register", &node_info);
if (node_updated == true)
{
appendPQExpBuffer(&event_details, _("node record updated for node \"%s\" (%i)"),
config_file_options.node_name, config_file_options.node_id);
log_verbose(LOG_NOTICE, "%s", event_details.data);
}
else
{
success = false;
}
}
else
{
/* create new node record */
bool node_created = create_node_record(conn, "bdr register", &node_info);
if (node_created == true)
{
appendPQExpBuffer(&event_details,
_("node record created for node \"%s\" (ID: %i)"),
config_file_options.node_name, config_file_options.node_id);
log_notice("%s", event_details.data);
}
else
{
success = false;
}
}
if (success == false)
{
rollback_transaction(conn);
PQfinish(conn);
exit(ERR_DB_QUERY);
}
commit_transaction(conn);
/* Log the event */
create_event_notification(
conn,
&config_file_options,
config_file_options.node_id,
"bdr_register",
true,
event_details.data);
termPQExpBuffer(&event_details);
PQfinish(conn);
log_notice(_("BDR node %i registered (conninfo: %s)"),
config_file_options.node_id, config_file_options.conninfo);
return;
}
void
do_bdr_unregister(void)
{
PGconn *conn = NULL;
ExtensionStatus extension_status = REPMGR_UNKNOWN;
int target_node_id = UNKNOWN_NODE_ID;
t_node_info node_info = T_NODE_INFO_INITIALIZER;
RecordStatus record_status = RECORD_NOT_FOUND;
bool node_record_deleted = false;
PQExpBufferData event_details;
char *dbname;
/* sanity-check configuration for BDR-compatability */
if (config_file_options.replication_type != REPLICATION_TYPE_BDR)
{
log_error(_("cannot run BDR UNREGISTER on a non-BDR node"));
exit(ERR_BAD_CONFIG);
}
dbname = pg_malloc0(MAXLEN);
if (dbname == NULL)
{
log_error(_("unable to allocate memory; terminating."));
exit(ERR_OUT_OF_MEMORY);
}
/* store the database name for future reference */
get_conninfo_value(config_file_options.conninfo, "dbname", dbname);
conn = establish_db_connection(config_file_options.conninfo, true);
if (!is_bdr_db(conn, NULL))
{
log_error(_("database \"%s\" is not BDR-enabled"), dbname);
PQfinish(conn);
pfree(dbname);
exit(ERR_BAD_CONFIG);
}
extension_status = get_repmgr_extension_status(conn, NULL);
if (extension_status != REPMGR_INSTALLED)
{
log_error(_("repmgr is not installed on database \"%s\""), dbname);
PQfinish(conn);
pfree(dbname);
exit(ERR_BAD_CONFIG);
}
pfree(dbname);
if (!is_bdr_repmgr(conn))
{
log_error(_("repmgr metadatabase contains records for non-BDR nodes"));
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
initPQExpBuffer(&event_details);
if (runtime_options.node_id != UNKNOWN_NODE_ID)
target_node_id = runtime_options.node_id;
else
target_node_id = config_file_options.node_id;
/* Check node exists and is really a BDR node */
record_status = get_node_record(conn, target_node_id, &node_info);
if (record_status != RECORD_FOUND)
{
log_error(_("no record found for node %i"), target_node_id);
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
begin_transaction(conn);
log_debug("unregistering node %i", target_node_id);
node_record_deleted = delete_node_record(conn, target_node_id);
if (node_record_deleted == false)
{
appendPQExpBuffer(&event_details,
"unable to delete node record for node \"%s\" (ID: %i)",
node_info.node_name,
target_node_id);
rollback_transaction(conn);
}
else
{
appendPQExpBuffer(&event_details,
"node record deleted for node \"%s\" (ID: %i)",
node_info.node_name,
target_node_id);
commit_transaction(conn);
}
/* Log the event */
create_event_notification(
conn,
&config_file_options,
config_file_options.node_id,
"bdr_unregister",
true,
event_details.data);
PQfinish(conn);
log_notice(_("bdr node \"%s\" (ID: %i) successfully unregistered"),
node_info.node_name, target_node_id);
termPQExpBuffer(&event_details);
return;
}
void
do_bdr_help(void)
{
print_help_header();
printf(_("Usage:\n"));
printf(_(" %s [OPTIONS] bdr register\n"), progname());
printf(_(" %s [OPTIONS] bdr unregister\n"), progname());
puts("");
printf(_("BDR REGISTER\n"));
puts("");
printf(_(" \"bdr register\" initialises the repmgr cluster and registers the initial bdr node.\n"));
puts("");
printf(_(" -F, --force overwrite an existing node record\n"));
puts("");
printf(_("BDR UNREGISTER\n"));
puts("");
printf(_(" \"bdr unregister\" unregisters an inactive BDR node.\n"));
puts("");
printf(_(" --node-id ID node to unregister (optional, used when the node to unregister\n" \
" is offline)\n"));
puts("");
}

View File

@@ -1,6 +1,6 @@
/* /*
* repmgr-action-service.h * repmgr-action-bdr.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@@ -16,13 +16,13 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>. * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/ */
#ifndef _REPMGR_ACTION_SERVICE_H_ #ifndef _REPMGR_ACTION_BDR_H_
#define _REPMGR_ACTION_SERVICE_H_ #define _REPMGR_ACTION_BDR_H_
extern void do_bdr_register(void);
extern void do_bdr_unregister(void);
extern void do_bdr_help(void);
extern void do_service_status(void); #endif /* _REPMGR_ACTION_BDR_H_ */
extern void do_service_pause(void);
extern void do_service_unpause(void);
extern void do_service_help(void);
#endif

View File

@@ -3,7 +3,7 @@
* *
* Implements cluster information actions for the repmgr command line utility * Implements cluster information actions for the repmgr command line utility
* *
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@@ -55,8 +55,10 @@ typedef enum
struct ColHeader headers_show[SHOW_HEADER_COUNT]; struct ColHeader headers_show[SHOW_HEADER_COUNT];
struct ColHeader headers_event[EVENT_HEADER_COUNT]; struct ColHeader headers_event[EVENT_HEADER_COUNT];
static int build_cluster_matrix(t_node_matrix_rec ***matrix_rec_dest, ItemList *warnings, int *error_code);
static int build_cluster_crosscheck(t_node_status_cube ***cube_dest, ItemList *warnings, int *error_code);
static int build_cluster_matrix(t_node_matrix_rec ***matrix_rec_dest, int *name_length, ItemList *warnings, int *error_code);
static int build_cluster_crosscheck(t_node_status_cube ***cube_dest, int *name_length, ItemList *warnings, int *error_code);
static void cube_set_node_status(t_node_status_cube **cube, int n, int node_id, int matrix_node_id, int connection_node_id, int connection_status); static void cube_set_node_status(t_node_status_cube **cube, int n, int node_id, int matrix_node_id, int connection_node_id, int connection_status);
/* /*
@@ -65,8 +67,6 @@ static void cube_set_node_status(t_node_status_cube **cube, int n, int node_id,
* Parameters: * Parameters:
* --compact * --compact
* --csv * --csv
* --terse
* --verbose
*/ */
void void
do_cluster_show(void) do_cluster_show(void)
@@ -206,8 +206,7 @@ do_cluster_show(void)
else else
{ {
/* NOP on pre-9.6 servers */ /* NOP on pre-9.6 servers */
cell->node_info->replication_info->timeline_id = get_node_timeline(cell->node_info->conn, cell->node_info->replication_info->timeline_id = get_node_timeline(cell->node_info->conn);
cell->node_info->replication_info->timeline_id_str);
} }
initPQExpBuffer(&node_status); initPQExpBuffer(&node_status);
@@ -245,13 +244,18 @@ do_cluster_show(void)
headers_show[SHOW_LOCATION].cur_length = strlen(cell->node_info->location); headers_show[SHOW_LOCATION].cur_length = strlen(cell->node_info->location);
/* Format timeline ID */ if (cell->node_info->replication_info->timeline_id == UNKNOWN_TIMELINE_ID)
if (cell->node_info->type == WITNESS)
{ {
/* The witness node's timeline ID is irrelevant */ /* display "?" */
strncpy(cell->node_info->replication_info->timeline_id_str, _("n/a"), MAXLEN); headers_show[SHOW_PRIORITY].cur_length = 1;
}
else
{
initPQExpBuffer(&buf);
appendPQExpBuffer(&buf, "%i", cell->node_info->replication_info->timeline_id);
headers_show[SHOW_PRIORITY].cur_length = strlen(buf.data);
termPQExpBuffer(&buf);
} }
headers_show[SHOW_TIMELINE_ID].cur_length = strlen(cell->node_info->replication_info->timeline_id_str);
headers_show[SHOW_CONNINFO].cur_length = strlen(cell->node_info->conninfo); headers_show[SHOW_CONNINFO].cur_length = strlen(cell->node_info->conninfo);
@@ -318,7 +322,10 @@ do_cluster_show(void)
if (headers_show[SHOW_TIMELINE_ID].display == true) if (headers_show[SHOW_TIMELINE_ID].display == true)
{ {
printf("| %-*s ", headers_show[SHOW_TIMELINE_ID].max_length, cell->node_info->replication_info->timeline_id_str); if (cell->node_info->replication_info->timeline_id == UNKNOWN_TIMELINE_ID)
printf("| %-*c ", headers_show[SHOW_TIMELINE_ID].max_length, '?');
else
printf("| %-*i ", headers_show[SHOW_TIMELINE_ID].max_length, (int)cell->node_info->replication_info->timeline_id);
} }
if (headers_show[SHOW_CONNINFO].display == true) if (headers_show[SHOW_CONNINFO].display == true)
@@ -336,25 +343,14 @@ do_cluster_show(void)
/* emit any warnings */ /* emit any warnings */
if (warnings.head != NULL && runtime_options.terse == false && runtime_options.output_mode != OM_CSV) if (warnings.head != NULL && runtime_options.terse == false && runtime_options.output_mode != OM_CSV)
{ {
ItemListCell *cell = NULL; ItemListCell *cell = NULL;
PQExpBufferData warning;
initPQExpBuffer(&warning); printf(_("\nWARNING: following issues were detected\n"));
appendPQExpBufferStr(&warning,
_("following issues were detected\n"));
for (cell = warnings.head; cell; cell = cell->next) for (cell = warnings.head; cell; cell = cell->next)
{ {
appendPQExpBuffer(&warning, printf(_(" - %s\n"), cell->string);
_(" - %s\n"), cell->string);
} }
puts("");
log_warning("%s", warning.data);
termPQExpBuffer(&warning);
if (runtime_options.verbose == false && connection_error_found == true) if (runtime_options.verbose == false && connection_error_found == true)
{ {
log_hint(_("execute with --verbose option to see connection error messages")); log_hint(_("execute with --verbose option to see connection error messages"));
@@ -536,6 +532,9 @@ do_cluster_crosscheck(void)
{ {
int i = 0, int i = 0,
n = 0; n = 0;
char c;
const char *node_header = "Name";
int name_length = strlen(node_header);
t_node_status_cube **cube; t_node_status_cube **cube;
@@ -543,7 +542,7 @@ do_cluster_crosscheck(void)
int error_code = SUCCESS; int error_code = SUCCESS;
ItemList warnings = {NULL, NULL}; ItemList warnings = {NULL, NULL};
n = build_cluster_crosscheck(&cube, &warnings, &error_code); n = build_cluster_crosscheck(&cube, &name_length, &warnings, &error_code);
if (runtime_options.output_mode == OM_CSV) if (runtime_options.output_mode == OM_CSV)
{ {
@@ -577,56 +576,24 @@ do_cluster_crosscheck(void)
} }
else else
{ {
/* output header contains node name, node ID and one column for each node in the cluster */ printf("%*s | Id ", name_length, node_header);
struct ColHeader *headers_crosscheck = NULL;
int header_count = n + 2;
int header_id = 2;
headers_crosscheck = palloc0(sizeof(ColHeader) * header_count);
/* Initialize column headers */
strncpy(headers_crosscheck[0].title, _("Name"), MAXLEN);
strncpy(headers_crosscheck[1].title, _("ID"), MAXLEN);
for (i = 0; i < n; i++) for (i = 0; i < n; i++)
{ printf("| %2d ", cube[i]->node_id);
maxlen_snprintf(headers_crosscheck[header_id].title, "%i", cube[i]->node_id); printf("\n");
header_id++;
}
/* Initialize column max values */
for (i = 0; i < header_count; i++)
{
headers_crosscheck[i].display = true;
headers_crosscheck[i].max_length = strlen(headers_crosscheck[i].title);
headers_crosscheck[i].cur_length = headers_crosscheck[i].max_length;
/* We can derive the maximum node ID length for the ID column from
* the generated matrix node ID headers
*/
if (i >= 2 && headers_crosscheck[i].max_length > headers_crosscheck[1].max_length)
headers_crosscheck[1].max_length = headers_crosscheck[i].max_length;
}
for (i = 0; i < name_length; i++)
printf("-");
printf("-+----");
for (i = 0; i < n; i++) for (i = 0; i < n; i++)
{ printf("+----");
if (strlen(cube[i]->node_name) > headers_crosscheck[0].max_length) printf("\n");
{
headers_crosscheck[0].max_length = strlen(cube[i]->node_name);
}
}
print_status_header(header_count, headers_crosscheck);
for (i = 0; i < n; i++) for (i = 0; i < n; i++)
{ {
int column_node_ix; int column_node_ix;
printf(" %-*s | %-*i ", printf("%*s | %2d ", name_length,
headers_crosscheck[0].max_length,
cube[i]->node_name, cube[i]->node_name,
headers_crosscheck[1].max_length,
cube[i]->node_id); cube[i]->node_id);
for (column_node_ix = 0; column_node_ix < n; column_node_ix++) for (column_node_ix = 0; column_node_ix < n; column_node_ix++)
@@ -634,8 +601,6 @@ do_cluster_crosscheck(void)
int max_node_status = -2; int max_node_status = -2;
int node_ix = 0; int node_ix = 0;
char c;
/* /*
* The value of entry (i,j) is equal to the maximum value of all * The value of entry (i,j) is equal to the maximum value of all
* the (i,j,k). Indeed: * the (i,j,k). Indeed:
@@ -675,14 +640,12 @@ do_cluster_crosscheck(void)
exit(ERR_INTERNAL); exit(ERR_INTERNAL);
} }
printf("| %-*c ", headers_crosscheck[column_node_ix + 2].max_length, c); printf("| %c ", c);
} }
printf("\n"); printf("\n");
} }
pfree(headers_crosscheck);
if (warnings.head != NULL && runtime_options.terse == false) if (warnings.head != NULL && runtime_options.terse == false)
{ {
log_warning(_("following problems detected:")); log_warning(_("following problems detected:"));
@@ -739,13 +702,16 @@ do_cluster_matrix()
j = 0, j = 0,
n = 0; n = 0;
const char *node_header = "Name";
int name_length = strlen(node_header);
t_node_matrix_rec **matrix_rec_list; t_node_matrix_rec **matrix_rec_list;
bool connection_error_found = false; bool connection_error_found = false;
int error_code = SUCCESS; int error_code = SUCCESS;
ItemList warnings = {NULL, NULL}; ItemList warnings = {NULL, NULL};
n = build_cluster_matrix(&matrix_rec_list, &warnings, &error_code); n = build_cluster_matrix(&matrix_rec_list, &name_length, &warnings, &error_code);
if (runtime_options.output_mode == OM_CSV) if (runtime_options.output_mode == OM_CSV)
{ {
@@ -768,60 +734,27 @@ do_cluster_matrix()
} }
else else
{ {
/* output header contains node name, node ID and one column for each node in the cluster */ char c;
struct ColHeader *headers_matrix = NULL;
int header_count = n + 2; printf("%*s | Id ", name_length, node_header);
int header_id = 2; for (i = 0; i < n; i++)
printf("| %2d ", matrix_rec_list[i]->node_id);
printf("\n");
headers_matrix = palloc0(sizeof(ColHeader) * header_count); for (i = 0; i < name_length; i++)
printf("-");
/* Initialize column headers */ printf("-+----");
strncpy(headers_matrix[0].title, _("Name"), MAXLEN); for (i = 0; i < n; i++)
strncpy(headers_matrix[1].title, _("ID"), MAXLEN); printf("+----");
printf("\n");
for (i = 0; i < n; i++) for (i = 0; i < n; i++)
{ {
maxlen_snprintf(headers_matrix[header_id].title, "%i", matrix_rec_list[i]->node_id); printf("%*s | %2d ", name_length,
header_id++;
}
/* Initialize column max values */
for (i = 0; i < header_count; i++)
{
headers_matrix[i].display = true;
headers_matrix[i].max_length = strlen(headers_matrix[i].title);
headers_matrix[i].cur_length = headers_matrix[i].max_length;
/* We can derive the maximum node ID length for the ID column from
* the generated matrix node ID headers
*/
if (i >= 2 && headers_matrix[i].max_length > headers_matrix[1].max_length)
headers_matrix[1].max_length = headers_matrix[i].max_length;
}
for (i = 0; i < n; i++)
{
if (strlen(matrix_rec_list[i]->node_name) > headers_matrix[0].max_length)
{
headers_matrix[0].max_length = strlen(matrix_rec_list[i]->node_name);
}
}
print_status_header(header_count, headers_matrix);
for (i = 0; i < n; i++)
{
printf(" %-*s | %-*i ",
headers_matrix[0].max_length,
matrix_rec_list[i]->node_name, matrix_rec_list[i]->node_name,
headers_matrix[1].max_length,
matrix_rec_list[i]->node_id); matrix_rec_list[i]->node_id);
for (j = 0; j < n; j++) for (j = 0; j < n; j++)
{ {
char c;
switch (matrix_rec_list[i]->node_status_list[j]->node_status) switch (matrix_rec_list[i]->node_status_list[j]->node_status)
{ {
case -2: case -2:
@@ -839,13 +772,11 @@ do_cluster_matrix()
exit(ERR_INTERNAL); exit(ERR_INTERNAL);
} }
printf("| %-*c ", headers_matrix[j + 2].max_length, c); printf("| %c ", c);
} }
printf("\n"); printf("\n");
} }
pfree(headers_matrix);
if (warnings.head != NULL && runtime_options.terse == false) if (warnings.head != NULL && runtime_options.terse == false)
{ {
log_warning(_("following problems detected:")); log_warning(_("following problems detected:"));
@@ -901,7 +832,7 @@ matrix_set_node_status(t_node_matrix_rec **matrix_rec_list, int n, int node_id,
static int static int
build_cluster_matrix(t_node_matrix_rec ***matrix_rec_dest, ItemList *warnings, int *error_code) build_cluster_matrix(t_node_matrix_rec ***matrix_rec_dest, int *name_length, ItemList *warnings, int *error_code)
{ {
PGconn *conn = NULL; PGconn *conn = NULL;
int i = 0, int i = 0,
@@ -959,6 +890,7 @@ build_cluster_matrix(t_node_matrix_rec ***matrix_rec_dest, ItemList *warnings, i
/* Initialise matrix structure for each node */ /* Initialise matrix structure for each node */
for (cell = nodes.head; cell; cell = cell->next) for (cell = nodes.head; cell; cell = cell->next)
{ {
int name_length_cur;
NodeInfoListCell *cell_j; NodeInfoListCell *cell_j;
matrix_rec_list[i] = (t_node_matrix_rec *) pg_malloc0(sizeof(t_node_matrix_rec)); matrix_rec_list[i] = (t_node_matrix_rec *) pg_malloc0(sizeof(t_node_matrix_rec));
@@ -968,6 +900,13 @@ build_cluster_matrix(t_node_matrix_rec ***matrix_rec_dest, ItemList *warnings, i
cell->node_info->node_name, cell->node_info->node_name,
sizeof(matrix_rec_list[i]->node_name)); sizeof(matrix_rec_list[i]->node_name));
/*
* Find the maximum length of a node name
*/
name_length_cur = strlen(matrix_rec_list[i]->node_name);
if (name_length_cur > *name_length)
*name_length = name_length_cur;
matrix_rec_list[i]->node_status_list = (t_node_status_rec **) pg_malloc0(sizeof(t_node_status_rec) * nodes.node_count); matrix_rec_list[i]->node_status_list = (t_node_status_rec **) pg_malloc0(sizeof(t_node_status_rec) * nodes.node_count);
j = 0; j = 0;
@@ -1048,19 +987,7 @@ build_cluster_matrix(t_node_matrix_rec ***matrix_rec_dest, ItemList *warnings, i
make_remote_repmgr_path(&command, cell->node_info); make_remote_repmgr_path(&command, cell->node_info);
appendPQExpBufferStr(&command, appendPQExpBufferStr(&command,
" cluster show --csv --terse"); " cluster show --csv -L NOTICE --terse\"");
/*
* Usually we'll want NOTICE as the log level, but if the user
* explicitly provided one with --log-level, that will be passed
* in the remote repmgr invocation.
*/
if (runtime_options.log_level[0] == '\0')
{
appendPQExpBufferStr(&command,
" -L NOTICE");
}
appendPQExpBufferChar(&command, '"');
log_verbose(LOG_DEBUG, "build_cluster_matrix(): executing:\n %s", command.data); log_verbose(LOG_DEBUG, "build_cluster_matrix(): executing:\n %s", command.data);
@@ -1132,7 +1059,7 @@ build_cluster_matrix(t_node_matrix_rec ***matrix_rec_dest, ItemList *warnings, i
static int static int
build_cluster_crosscheck(t_node_status_cube ***dest_cube, ItemList *warnings, int *error_code) build_cluster_crosscheck(t_node_status_cube ***dest_cube, int *name_length, ItemList *warnings, int *error_code)
{ {
PGconn *conn = NULL; PGconn *conn = NULL;
int h, int h,
@@ -1181,12 +1108,20 @@ build_cluster_crosscheck(t_node_status_cube ***dest_cube, ItemList *warnings, in
for (cell = nodes.head; cell; cell = cell->next) for (cell = nodes.head; cell; cell = cell->next)
{ {
int name_length_cur = 0;
NodeInfoListCell *cell_i = NULL; NodeInfoListCell *cell_i = NULL;
cube[h] = (t_node_status_cube *) pg_malloc(sizeof(t_node_status_cube)); cube[h] = (t_node_status_cube *) pg_malloc(sizeof(t_node_status_cube));
cube[h]->node_id = cell->node_info->node_id; cube[h]->node_id = cell->node_info->node_id;
strncpy(cube[h]->node_name, cell->node_info->node_name, sizeof(cube[h]->node_name)); strncpy(cube[h]->node_name, cell->node_info->node_name, sizeof(cube[h]->node_name));
/*
* Find the maximum length of a node name
*/
name_length_cur = strlen(cube[h]->node_name);
if (name_length_cur > *name_length)
*name_length = name_length_cur;
cube[h]->matrix_list_rec = (t_node_matrix_rec **) pg_malloc(sizeof(t_node_matrix_rec) * nodes.node_count); cube[h]->matrix_list_rec = (t_node_matrix_rec **) pg_malloc(sizeof(t_node_matrix_rec) * nodes.node_count);
i = 0; i = 0;
@@ -1240,18 +1175,7 @@ build_cluster_crosscheck(t_node_status_cube ***dest_cube, ItemList *warnings, in
make_remote_repmgr_path(&command, cell->node_info); make_remote_repmgr_path(&command, cell->node_info);
appendPQExpBufferStr(&command, appendPQExpBufferStr(&command,
" cluster matrix --csv --terse"); " cluster matrix --csv -L NOTICE --terse");
/*
* Usually we'll want NOTICE as the log level, but if the user
* explicitly provided one with --log-level, that will be passed
* in the remote repmgr invocation.
*/
if (runtime_options.log_level[0] == '\0')
{
appendPQExpBufferStr(&command,
" -L NOTICE");
}
initPQExpBuffer(&command_output); initPQExpBuffer(&command_output);
@@ -1449,10 +1373,6 @@ do_cluster_cleanup(void)
log_warning(_("unable to vacuum table \"repmgr.monitoring_history\"")); log_warning(_("unable to vacuum table \"repmgr.monitoring_history\""));
log_detail("%s", PQerrorMessage(primary_conn)); log_detail("%s", PQerrorMessage(primary_conn));
} }
else
{
log_info(_("vacuum of table \"repmgr.monitoring_history\" completed"));
}
if (runtime_options.keep_history == 0) if (runtime_options.keep_history == 0)
{ {
@@ -1554,5 +1474,4 @@ do_cluster_help(void)
printf(_(" -k, --keep-history=VALUE retain indicated number of days of history (default: 0)\n")); printf(_(" -k, --keep-history=VALUE retain indicated number of days of history (default: 0)\n"));
puts(""); puts("");
printf(_("%s home page: <%s>\n"), "repmgr", REPMGR_URL);
} }

View File

@@ -1,6 +1,6 @@
/* /*
* repmgr-action-cluster.h * repmgr-action-cluster.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

View File

@@ -2,7 +2,7 @@
* repmgr-action-daemon.c * repmgr-action-daemon.c
* *
* Implements repmgrd actions for the repmgr command line utility * Implements repmgrd actions for the repmgr command line utility
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@@ -26,9 +26,478 @@
#include "repmgr-client-global.h" #include "repmgr-client-global.h"
#include "repmgr-action-daemon.h" #include "repmgr-action-daemon.h"
#define REPMGR_SERVICE_STOP_START_WAIT 15 #define REPMGR_DAEMON_STOP_START_WAIT 15
#define REPMGR_SERVICE_STATUS_START_HINT _("use \"repmgr service status\" to confirm that repmgrd was successfully started") #define REPMGR_DAEMON_STATUS_START_HINT _("use \"repmgr daemon status\" to confirm that repmgrd was successfully started")
#define REPMGR_SERVICE_STATUS_STOP_HINT _("use \"repmgr service status\" to confirm that repmgrd was successfully stopped") #define REPMGR_DAEMON_STATUS_STOP_HINT _("use \"repmgr daemon status\" to confirm that repmgrd was successfully stopped")
/*
* Possibly also show:
* - repmgrd start time?
* - repmgrd mode
* - priority
* - whether promotion candidate (due to zero priority/different location)
*/
typedef enum
{
STATUS_ID = 0,
STATUS_NAME,
STATUS_ROLE,
STATUS_PG,
STATUS_UPSTREAM_NAME,
STATUS_LOCATION,
STATUS_PRIORITY,
STATUS_REPMGRD,
STATUS_PID,
STATUS_PAUSED,
STATUS_UPSTREAM_LAST_SEEN
} StatusHeader;
#define STATUS_HEADER_COUNT 11
struct ColHeader headers_status[STATUS_HEADER_COUNT];
static void fetch_node_records(PGconn *conn, NodeInfoList *node_list);
static void _do_repmgr_pause(bool pause);
void
do_daemon_status(void)
{
PGconn *conn = NULL;
NodeInfoList nodes = T_NODE_INFO_LIST_INITIALIZER;
NodeInfoListCell *cell = NULL;
int i;
RepmgrdInfo **repmgrd_info;
ItemList warnings = {NULL, NULL};
bool connection_error_found = false;
/* Connect to local database to obtain cluster connection data */
log_verbose(LOG_INFO, _("connecting to database"));
if (strlen(config_file_options.conninfo))
conn = establish_db_connection(config_file_options.conninfo, true);
else
conn = establish_db_connection_by_params(&source_conninfo, true);
fetch_node_records(conn, &nodes);
repmgrd_info = (RepmgrdInfo **) pg_malloc0(sizeof(RepmgrdInfo *) * nodes.node_count);
if (repmgrd_info == NULL)
{
log_error(_("unable to allocate memory"));
exit(ERR_OUT_OF_MEMORY);
}
strncpy(headers_status[STATUS_ID].title, _("ID"), MAXLEN);
strncpy(headers_status[STATUS_NAME].title, _("Name"), MAXLEN);
strncpy(headers_status[STATUS_ROLE].title, _("Role"), MAXLEN);
strncpy(headers_status[STATUS_PG].title, _("Status"), MAXLEN);
strncpy(headers_status[STATUS_UPSTREAM_NAME].title, _("Upstream"), MAXLEN);
/* following only displayed with the --detail option */
strncpy(headers_status[STATUS_LOCATION].title, _("Location"), MAXLEN);
if (runtime_options.compact == true)
strncpy(headers_status[STATUS_PRIORITY].title, _("Prio."), MAXLEN);
else
strncpy(headers_status[STATUS_PRIORITY].title, _("Priority"), MAXLEN);
strncpy(headers_status[STATUS_REPMGRD].title, _("repmgrd"), MAXLEN);
strncpy(headers_status[STATUS_PID].title, _("PID"), MAXLEN);
strncpy(headers_status[STATUS_PAUSED].title, _("Paused?"), MAXLEN);
if (runtime_options.compact == true)
strncpy(headers_status[STATUS_UPSTREAM_LAST_SEEN].title, _("Upstr. last"), MAXLEN);
else
strncpy(headers_status[STATUS_UPSTREAM_LAST_SEEN].title, _("Upstream last seen"), MAXLEN);
for (i = 0; i < STATUS_HEADER_COUNT; i++)
{
headers_status[i].max_length = strlen(headers_status[i].title);
headers_status[i].display = true;
}
if (runtime_options.detail == false)
{
headers_status[STATUS_LOCATION].display = false;
headers_status[STATUS_PRIORITY].display = false;
}
i = 0;
for (cell = nodes.head; cell; cell = cell->next)
{
int j;
PQExpBufferData node_status;
PQExpBufferData upstream;
repmgrd_info[i] = pg_malloc0(sizeof(RepmgrdInfo));
repmgrd_info[i]->node_id = cell->node_info->node_id;
repmgrd_info[i]->pid = UNKNOWN_PID;
repmgrd_info[i]->recovery_type = RECTYPE_UNKNOWN;
repmgrd_info[i]->paused = false;
repmgrd_info[i]->running = false;
repmgrd_info[i]->pg_running = true;
repmgrd_info[i]->wal_paused_pending_wal = false;
repmgrd_info[i]->upstream_last_seen = -1;
cell->node_info->conn = establish_db_connection_quiet(cell->node_info->conninfo);
if (PQstatus(cell->node_info->conn) != CONNECTION_OK)
{
connection_error_found = true;
if (runtime_options.verbose)
{
char error[MAXLEN];
strncpy(error, PQerrorMessage(cell->node_info->conn), MAXLEN);
item_list_append_format(&warnings,
"when attempting to connect to node \"%s\" (ID: %i), following error encountered :\n\"%s\"",
cell->node_info->node_name, cell->node_info->node_id, trim(error));
}
else
{
item_list_append_format(&warnings,
"unable to connect to node \"%s\" (ID: %i)",
cell->node_info->node_name, cell->node_info->node_id);
}
repmgrd_info[i]->pg_running = false;
maxlen_snprintf(repmgrd_info[i]->repmgrd_running, "%s", _("n/a"));
maxlen_snprintf(repmgrd_info[i]->pid_text, "%s", _("n/a"));
}
else
{
cell->node_info->node_status = NODE_STATUS_UP;
cell->node_info->recovery_type = get_recovery_type(cell->node_info->conn);
repmgrd_info[i]->pid = repmgrd_get_pid(cell->node_info->conn);
repmgrd_info[i]->running = repmgrd_is_running(cell->node_info->conn);
if (repmgrd_info[i]->running == true)
{
maxlen_snprintf(repmgrd_info[i]->repmgrd_running, "%s", _("running"));
}
else
{
maxlen_snprintf(repmgrd_info[i]->repmgrd_running, "%s", _("not running"));
}
if (repmgrd_info[i]->pid == UNKNOWN_PID)
{
maxlen_snprintf(repmgrd_info[i]->pid_text, "%s", _("n/a"));
}
else
{
maxlen_snprintf(repmgrd_info[i]->pid_text, "%i", repmgrd_info[i]->pid);
}
repmgrd_info[i]->paused = repmgrd_is_paused(cell->node_info->conn);
repmgrd_info[i]->recovery_type = get_recovery_type(cell->node_info->conn);
if (repmgrd_info[i]->recovery_type == RECTYPE_STANDBY)
{
repmgrd_info[i]->wal_paused_pending_wal = is_wal_replay_paused(cell->node_info->conn, true);
if (repmgrd_info[i]->wal_paused_pending_wal == true)
{
item_list_append_format(&warnings,
_("WAL replay is paused on node \"%s\" (ID: %i) with WAL replay pending; this node cannot be manually promoted until WAL replay is resumed"),
cell->node_info->node_name, cell->node_info->node_id);
}
}
repmgrd_info[i]->upstream_last_seen = get_upstream_last_seen(cell->node_info->conn, cell->node_info->type);
if (repmgrd_info[i]->upstream_last_seen < 0)
{
maxlen_snprintf(repmgrd_info[i]->upstream_last_seen_text, "%s", _("n/a"));
}
else
{
if (runtime_options.compact == true)
{
maxlen_snprintf(repmgrd_info[i]->upstream_last_seen_text, _("%i sec(s) ago"), repmgrd_info[i]->upstream_last_seen);
}
else
{
maxlen_snprintf(repmgrd_info[i]->upstream_last_seen_text, _("%i second(s) ago"), repmgrd_info[i]->upstream_last_seen);
}
}
}
initPQExpBuffer(&node_status);
initPQExpBuffer(&upstream);
(void)format_node_status(cell->node_info, &node_status, &upstream, &warnings);
snprintf(repmgrd_info[i]->pg_running_text, sizeof(cell->node_info->details),
"%s", node_status.data);
snprintf(cell->node_info->upstream_node_name, sizeof(cell->node_info->upstream_node_name),
"%s", upstream.data);
termPQExpBuffer(&node_status);
termPQExpBuffer(&upstream);
PQfinish(cell->node_info->conn);
headers_status[STATUS_NAME].cur_length = strlen(cell->node_info->node_name);
headers_status[STATUS_ROLE].cur_length = strlen(get_node_type_string(cell->node_info->type));
headers_status[STATUS_PG].cur_length = strlen(repmgrd_info[i]->pg_running_text);
headers_status[STATUS_UPSTREAM_NAME].cur_length = strlen(cell->node_info->upstream_node_name);
if (runtime_options.detail == true)
{
PQExpBufferData buf;
headers_status[STATUS_LOCATION].cur_length = strlen(cell->node_info->location);
initPQExpBuffer(&buf);
appendPQExpBuffer(&buf, "%i", cell->node_info->priority);
headers_status[STATUS_PRIORITY].cur_length = strlen(buf.data);
termPQExpBuffer(&buf);
}
headers_status[STATUS_PID].cur_length = strlen(repmgrd_info[i]->pid_text);
headers_status[STATUS_REPMGRD].cur_length = strlen(repmgrd_info[i]->repmgrd_running);
headers_status[STATUS_UPSTREAM_LAST_SEEN].cur_length = strlen(repmgrd_info[i]->upstream_last_seen_text);
for (j = 0; j < STATUS_HEADER_COUNT; j++)
{
if (headers_status[j].cur_length > headers_status[j].max_length)
{
headers_status[j].max_length = headers_status[j].cur_length;
}
}
i++;
}
/* Print column header row (text mode only) */
if (runtime_options.output_mode == OM_TEXT)
{
print_status_header(STATUS_HEADER_COUNT, headers_status);
}
i = 0;
for (cell = nodes.head; cell; cell = cell->next)
{
if (runtime_options.output_mode == OM_CSV)
{
int running = repmgrd_info[i]->running ? 1 : 0;
int paused = repmgrd_info[i]->paused ? 1 : 0;
/* If PostgreSQL is not running, repmgrd status is unknown */
if (repmgrd_info[i]->pg_running == false)
{
running = -1;
paused = -1;
}
printf("%i,%s,%s,%i,%i,%i,%i,%i,%i,%s\n",
cell->node_info->node_id,
cell->node_info->node_name,
get_node_type_string(cell->node_info->type),
repmgrd_info[i]->pg_running ? 1 : 0,
running,
repmgrd_info[i]->pid,
paused,
cell->node_info->priority,
repmgrd_info[i]->pid == UNKNOWN_PID
? -1
: repmgrd_info[i]->upstream_last_seen,
cell->node_info->location);
}
else
{
printf(" %-*i ", headers_status[STATUS_ID].max_length, cell->node_info->node_id);
printf("| %-*s ", headers_status[STATUS_NAME].max_length, cell->node_info->node_name);
printf("| %-*s ", headers_status[STATUS_ROLE].max_length, get_node_type_string(cell->node_info->type));
printf("| %-*s ", headers_status[STATUS_PG].max_length, repmgrd_info[i]->pg_running_text);
printf("| %-*s ", headers_status[STATUS_UPSTREAM_NAME].max_length, cell->node_info->upstream_node_name);
if (runtime_options.detail == true)
{
printf("| %-*s ", headers_status[STATUS_LOCATION].max_length, cell->node_info->location);
printf("| %-*i ", headers_status[STATUS_PRIORITY].max_length, cell->node_info->priority);
}
printf("| %-*s ", headers_status[STATUS_REPMGRD].max_length, repmgrd_info[i]->repmgrd_running);
printf("| %-*s ", headers_status[STATUS_PID].max_length, repmgrd_info[i]->pid_text);
if (repmgrd_info[i]->pid == UNKNOWN_PID)
{
printf("| %-*s ", headers_status[STATUS_PAUSED].max_length, _("n/a"));
printf("| %-*s ", headers_status[STATUS_UPSTREAM_LAST_SEEN].max_length, _("n/a"));
}
else
{
printf("| %-*s ", headers_status[STATUS_PAUSED].max_length, repmgrd_info[i]->paused ? _("yes") : _("no"));
printf("| %-*s ", headers_status[STATUS_UPSTREAM_LAST_SEEN].max_length, repmgrd_info[i]->upstream_last_seen_text);
}
printf("\n");
}
pfree(repmgrd_info[i]);
i++;
}
pfree(repmgrd_info);
/* emit any warnings */
if (warnings.head != NULL && runtime_options.terse == false && runtime_options.output_mode != OM_CSV)
{
ItemListCell *cell = NULL;
printf(_("\nWARNING: following issues were detected\n"));
for (cell = warnings.head; cell; cell = cell->next)
{
printf(_(" - %s\n"), cell->string);
}
if (runtime_options.verbose == false && connection_error_found == true)
{
log_hint(_("execute with --verbose option to see connection error messages"));
}
}
}
void
do_daemon_pause(void)
{
_do_repmgr_pause(true);
}
void
do_daemon_unpause(void)
{
_do_repmgr_pause(false);
}
static void
_do_repmgr_pause(bool pause)
{
PGconn *conn = NULL;
NodeInfoList nodes = T_NODE_INFO_LIST_INITIALIZER;
NodeInfoListCell *cell = NULL;
int i;
int error_nodes = 0;
/* Connect to local database to obtain cluster connection data */
log_verbose(LOG_INFO, _("connecting to database"));
if (strlen(config_file_options.conninfo))
conn = establish_db_connection(config_file_options.conninfo, true);
else
conn = establish_db_connection_by_params(&source_conninfo, true);
fetch_node_records(conn, &nodes);
i = 0;
for (cell = nodes.head; cell; cell = cell->next)
{
log_verbose(LOG_DEBUG, "pausing node %i (%s)",
cell->node_info->node_id,
cell->node_info->node_name);
cell->node_info->conn = establish_db_connection_quiet(cell->node_info->conninfo);
if (PQstatus(cell->node_info->conn) != CONNECTION_OK)
{
log_warning(_("unable to connect to node %i"),
cell->node_info->node_id);
error_nodes++;
}
else
{
if (runtime_options.dry_run == true)
{
if (pause == true)
{
log_info(_("would pause node %i (%s) "),
cell->node_info->node_id,
cell->node_info->node_name);
}
else
{
log_info(_("would unpause node %i (%s) "),
cell->node_info->node_id,
cell->node_info->node_name);
}
}
else
{
bool success = repmgrd_pause(cell->node_info->conn, pause);
if (success == false)
error_nodes++;
log_notice(_("node %i (%s) %s"),
cell->node_info->node_id,
cell->node_info->node_name,
success == true
? pause == true ? "paused" : "unpaused"
: pause == true ? "not paused" : "not unpaused");
}
PQfinish(cell->node_info->conn);
}
i++;
}
if (error_nodes > 0)
{
if (pause == true)
{
log_error(_("unable to pause %i node(s)"), error_nodes);
}
else
{
log_error(_("unable to unpause %i node(s)"), error_nodes);
}
log_hint(_("execute \"repmgr daemon status\" to view current status"));
exit(ERR_REPMGRD_PAUSE);
}
exit(SUCCESS);
}
void
fetch_node_records(PGconn *conn, NodeInfoList *node_list)
{
bool success = get_all_node_records_with_upstream(conn, node_list);
if (success == false)
{
/* get_all_node_records() will display any error message */
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
if (node_list->node_count == 0)
{
log_error(_("no node records were found"));
log_hint(_("ensure at least one node is registered"));
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
}
void void
do_daemon_start(void) do_daemon_start(void)
@@ -114,12 +583,12 @@ do_daemon_start(void)
if (runtime_options.no_wait == true || runtime_options.wait == 0) if (runtime_options.no_wait == true || runtime_options.wait == 0)
{ {
log_hint(REPMGR_SERVICE_STATUS_START_HINT); log_hint(REPMGR_DAEMON_STATUS_START_HINT);
} }
else else
{ {
int i = 0; int i = 0;
int timeout = REPMGR_SERVICE_STOP_START_WAIT; int timeout = REPMGR_DAEMON_STOP_START_WAIT;
if (runtime_options.wait_provided) if (runtime_options.wait_provided)
timeout = runtime_options.wait; timeout = runtime_options.wait;
@@ -129,7 +598,7 @@ do_daemon_start(void)
if (PQstatus(conn) != CONNECTION_OK) if (PQstatus(conn) != CONNECTION_OK)
{ {
log_notice(_("unable to connect to local node")); log_notice(_("unable to connect to local node"));
log_hint(REPMGR_SERVICE_STATUS_START_HINT); log_hint(REPMGR_DAEMON_STATUS_START_HINT);
exit(ERR_DB_CONN); exit(ERR_DB_CONN);
} }
@@ -147,7 +616,7 @@ do_daemon_start(void)
PQfinish(conn); PQfinish(conn);
log_error(_("repmgrd does not appear to have started after %i seconds"), log_error(_("repmgrd does not appear to have started after %i seconds"),
timeout); timeout);
log_hint(REPMGR_SERVICE_STATUS_START_HINT); log_hint(REPMGR_DAEMON_STATUS_START_HINT);
exit(ERR_REPMGRD_SERVICE); exit(ERR_REPMGRD_SERVICE);
} }
@@ -243,12 +712,12 @@ void do_daemon_stop(void)
if (runtime_options.no_wait == true || runtime_options.wait == 0) if (runtime_options.no_wait == true || runtime_options.wait == 0)
{ {
if (have_db_connection == true) if (have_db_connection == true)
log_hint(REPMGR_SERVICE_STATUS_STOP_HINT); log_hint(REPMGR_DAEMON_STATUS_STOP_HINT);
} }
else else
{ {
int i = 0; int i = 0;
int timeout = REPMGR_SERVICE_STOP_START_WAIT; int timeout = REPMGR_DAEMON_STOP_START_WAIT;
/* /*
* *
*/ */
@@ -263,7 +732,7 @@ void do_daemon_stop(void)
log_warning(_("unable to determine repmgrd PID")); log_warning(_("unable to determine repmgrd PID"));
if (have_db_connection == true) if (have_db_connection == true)
log_hint(REPMGR_SERVICE_STATUS_STOP_HINT); log_hint(REPMGR_DAEMON_STATUS_STOP_HINT);
exit(ERR_REPMGRD_SERVICE); exit(ERR_REPMGRD_SERVICE);
} }
@@ -295,7 +764,7 @@ void do_daemon_stop(void)
timeout); timeout);
if (have_db_connection == true) if (have_db_connection == true)
log_hint(REPMGR_SERVICE_STATUS_START_HINT); log_hint(REPMGR_DAEMON_STATUS_START_HINT);
exit(ERR_REPMGRD_SERVICE); exit(ERR_REPMGRD_SERVICE);
} }
@@ -314,30 +783,53 @@ void do_daemon_help(void)
print_help_header(); print_help_header();
printf(_("Usage:\n")); printf(_("Usage:\n"));
printf(_(" %s [OPTIONS] daemon status\n"), progname());
printf(_(" %s [OPTIONS] daemon pause\n"), progname());
printf(_(" %s [OPTIONS] daemon unpause\n"), progname());
printf(_(" %s [OPTIONS] daemon start\n"), progname()); printf(_(" %s [OPTIONS] daemon start\n"), progname());
printf(_(" %s [OPTIONS] daemon stop\n"), progname()); printf(_(" %s [OPTIONS] daemon stop\n"), progname());
puts("");
printf(_("DAEMON STATUS\n"));
puts("");
printf(_(" \"daemon status\" shows the status of repmgrd on each node in the cluster\n"));
puts("");
printf(_(" --csv emit output as CSV\n"));
printf(_(" --detail show additional detail\n"));
printf(_(" --verbose show text of database connection error messages\n"));
puts(""); puts("");
printf(_("DAEMON START\n")); printf(_("DAEMON START\n"));
puts(""); puts("");
printf(_(" \"daemon start\" attempts to start repmgrd on the local node\n")); printf(_(" \"daemon start\" attempts to start repmgrd\n"));
puts(""); puts("");
printf(_(" --dry-run check prerequisites but don't start repmgrd\n")); printf(_(" --dry-run check prerequisites but don't start repmgrd\n"));
printf(_(" -w/--wait wait for repmgrd to start (default: %i seconds)\n"), REPMGR_SERVICE_STOP_START_WAIT); printf(_(" -w/--wait wait for repmgrd to start (default: %i seconds)\n"), REPMGR_DAEMON_STOP_START_WAIT);
printf(_(" --no-wait don't wait for repmgrd to start\n")); printf(_(" --no-wait don't wait for repmgrd to start\n"));
puts(""); puts("");
printf(_("DAEMON STOP\n")); printf(_("DAEMON STOP\n"));
puts(""); puts("");
printf(_(" \"daemon stop\" attempts to stop repmgrd on the local node\n")); printf(_(" \"daemon stop\" attempts to stop repmgrd\n"));
puts(""); puts("");
printf(_(" --dry-run check prerequisites but don't stop repmgrd\n")); printf(_(" --dry-run check prerequisites but don't stop repmgrd\n"));
printf(_(" -w/--wait wait for repmgrd to stop (default: %i seconds)\n"), REPMGR_SERVICE_STOP_START_WAIT); printf(_(" -w/--wait wait for repmgrd to stop (default: %i seconds)\n"), REPMGR_DAEMON_STOP_START_WAIT);
printf(_(" --no-wait don't wait for repmgrd to stop\n")); printf(_(" --no-wait don't wait for repmgrd to stop\n"));
puts(""); puts("");
printf(_("DAEMON PAUSE\n"));
puts("");
printf(_(" \"daemon pause\" instructs repmgrd on each node to pause failover detection\n"));
puts("");
printf(_(" --dry-run check if nodes are reachable but don't pause repmgrd\n"));
puts(""); puts("");
printf(_("%s home page: <%s>\n"), "repmgr", REPMGR_URL); printf(_("DAEMON UNPAUSE\n"));
puts("");
printf(_(" \"daemon unpause\" instructs repmgrd on each node to resume failover detection\n"));
puts("");
printf(_(" --dry-run check if nodes are reachable but don't unpause repmgrd\n"));
puts("");
puts("");
} }

View File

@@ -1,6 +1,6 @@
/* /*
* repmgr-action-daemon.h * repmgr-action-daemon.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@@ -19,6 +19,10 @@
#ifndef _REPMGR_ACTION_DAEMON_H_ #ifndef _REPMGR_ACTION_DAEMON_H_
#define _REPMGR_ACTION_DAEMON_H_ #define _REPMGR_ACTION_DAEMON_H_
extern void do_daemon_status(void);
extern void do_daemon_pause(void);
extern void do_daemon_unpause(void);
extern void do_daemon_start(void); extern void do_daemon_start(void);
extern void do_daemon_stop(void); extern void do_daemon_stop(void);

File diff suppressed because it is too large Load Diff

View File

@@ -1,6 +1,6 @@
/* /*
* repmgr-action-node.h * repmgr-action-node.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

View File

@@ -3,7 +3,7 @@
* *
* Implements primary actions for the repmgr command line utility * Implements primary actions for the repmgr command line utility
* *
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@@ -106,7 +106,7 @@ do_primary_register(void)
current_primary_id = get_primary_node_id(conn); current_primary_id = get_primary_node_id(conn);
if (current_primary_id != NODE_NOT_FOUND && current_primary_id != config_file_options.node_id) if (current_primary_id != NODE_NOT_FOUND && current_primary_id != config_file_options.node_id)
{ {
log_debug("current active primary node ID is %i", current_primary_id); log_debug("XXX %i", current_primary_id);
primary_conn = establish_primary_db_connection(conn, false); primary_conn = establish_primary_db_connection(conn, false);
if (PQstatus(primary_conn) == CONNECTION_OK) if (PQstatus(primary_conn) == CONNECTION_OK)
@@ -454,9 +454,9 @@ do_primary_unregister(void)
/* /*
* This appears to be the cluster primary - cowardly refuse to * This appears to be the cluster primary - cowardly refuse to
* delete the record, unless --force is supplied. * delete the record
*/ */
if (primary_node_info.node_id == target_node_info_ptr->node_id && !runtime_options.force) if (primary_node_info.node_id == target_node_info_ptr->node_id)
{ {
log_error(_("node \"%s\" (ID: %i) is the current primary node, unable to unregister"), log_error(_("node \"%s\" (ID: %i) is the current primary node, unable to unregister"),
target_node_info_ptr->node_name, target_node_info_ptr->node_name,
@@ -575,5 +575,4 @@ do_primary_help(void)
puts(""); puts("");
printf(_("%s home page: <%s>\n"), "repmgr", REPMGR_URL);
} }

View File

@@ -1,6 +1,6 @@
/* /*
* repmgr-action-primary.h * repmgr-action-primary.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

View File

@@ -1,548 +0,0 @@
/*
* repmgr-action-service.c
*
* Implements repmgrd actions for the repmgr command line utility
* Copyright (c) EnterpriseDB Corporation, 2010-2021
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <signal.h>
#include <sys/stat.h> /* for stat() */
#include "repmgr.h"
#include "repmgr-client-global.h"
#include "repmgr-action-service.h"
/*
* Possibly also show:
* - repmgrd start time?
* - repmgrd mode
* - priority
* - whether promotion candidate (due to zero priority/different location)
*/
typedef enum
{
STATUS_ID = 0,
STATUS_NAME,
STATUS_ROLE,
STATUS_PG,
STATUS_UPSTREAM_NAME,
STATUS_LOCATION,
STATUS_PRIORITY,
STATUS_REPMGRD,
STATUS_PID,
STATUS_PAUSED,
STATUS_UPSTREAM_LAST_SEEN
} StatusHeader;
#define STATUS_HEADER_COUNT 11
struct ColHeader headers_status[STATUS_HEADER_COUNT];
static void fetch_node_records(PGconn *conn, NodeInfoList *node_list);
static void _do_repmgr_pause(bool pause);
void
do_service_status(void)
{
PGconn *conn = NULL;
NodeInfoList nodes = T_NODE_INFO_LIST_INITIALIZER;
NodeInfoListCell *cell = NULL;
int i;
RepmgrdInfo **repmgrd_info;
ItemList warnings = {NULL, NULL};
bool connection_error_found = false;
/* Connect to local database to obtain cluster connection data */
log_verbose(LOG_INFO, _("connecting to database"));
if (strlen(config_file_options.conninfo))
conn = establish_db_connection(config_file_options.conninfo, true);
else
conn = establish_db_connection_by_params(&source_conninfo, true);
fetch_node_records(conn, &nodes);
repmgrd_info = (RepmgrdInfo **) pg_malloc0(sizeof(RepmgrdInfo *) * nodes.node_count);
if (repmgrd_info == NULL)
{
log_error(_("unable to allocate memory"));
exit(ERR_OUT_OF_MEMORY);
}
strncpy(headers_status[STATUS_ID].title, _("ID"), MAXLEN);
strncpy(headers_status[STATUS_NAME].title, _("Name"), MAXLEN);
strncpy(headers_status[STATUS_ROLE].title, _("Role"), MAXLEN);
strncpy(headers_status[STATUS_PG].title, _("Status"), MAXLEN);
strncpy(headers_status[STATUS_UPSTREAM_NAME].title, _("Upstream"), MAXLEN);
/* following only displayed with the --detail option */
strncpy(headers_status[STATUS_LOCATION].title, _("Location"), MAXLEN);
if (runtime_options.compact == true)
strncpy(headers_status[STATUS_PRIORITY].title, _("Prio."), MAXLEN);
else
strncpy(headers_status[STATUS_PRIORITY].title, _("Priority"), MAXLEN);
strncpy(headers_status[STATUS_REPMGRD].title, _("repmgrd"), MAXLEN);
strncpy(headers_status[STATUS_PID].title, _("PID"), MAXLEN);
strncpy(headers_status[STATUS_PAUSED].title, _("Paused?"), MAXLEN);
if (runtime_options.compact == true)
strncpy(headers_status[STATUS_UPSTREAM_LAST_SEEN].title, _("Upstr. last"), MAXLEN);
else
strncpy(headers_status[STATUS_UPSTREAM_LAST_SEEN].title, _("Upstream last seen"), MAXLEN);
for (i = 0; i < STATUS_HEADER_COUNT; i++)
{
headers_status[i].max_length = strlen(headers_status[i].title);
headers_status[i].display = true;
}
if (runtime_options.detail == false)
{
headers_status[STATUS_LOCATION].display = false;
headers_status[STATUS_PRIORITY].display = false;
}
i = 0;
for (cell = nodes.head; cell; cell = cell->next)
{
int j;
PQExpBufferData node_status;
PQExpBufferData upstream;
repmgrd_info[i] = pg_malloc0(sizeof(RepmgrdInfo));
repmgrd_info[i]->node_id = cell->node_info->node_id;
repmgrd_info[i]->pid = UNKNOWN_PID;
repmgrd_info[i]->recovery_type = RECTYPE_UNKNOWN;
repmgrd_info[i]->paused = false;
repmgrd_info[i]->running = false;
repmgrd_info[i]->pg_running = true;
repmgrd_info[i]->wal_paused_pending_wal = false;
repmgrd_info[i]->upstream_last_seen = -1;
cell->node_info->conn = establish_db_connection_quiet(cell->node_info->conninfo);
if (PQstatus(cell->node_info->conn) != CONNECTION_OK)
{
connection_error_found = true;
if (runtime_options.verbose)
{
char error[MAXLEN];
strncpy(error, PQerrorMessage(cell->node_info->conn), MAXLEN);
item_list_append_format(&warnings,
"when attempting to connect to node \"%s\" (ID: %i), following error encountered :\n\"%s\"",
cell->node_info->node_name, cell->node_info->node_id, trim(error));
}
else
{
item_list_append_format(&warnings,
"unable to connect to node \"%s\" (ID: %i)",
cell->node_info->node_name, cell->node_info->node_id);
}
repmgrd_info[i]->pg_running = false;
maxlen_snprintf(repmgrd_info[i]->repmgrd_running, "%s", _("n/a"));
maxlen_snprintf(repmgrd_info[i]->pid_text, "%s", _("n/a"));
}
else
{
cell->node_info->node_status = NODE_STATUS_UP;
cell->node_info->recovery_type = get_recovery_type(cell->node_info->conn);
repmgrd_info[i]->pid = repmgrd_get_pid(cell->node_info->conn);
repmgrd_info[i]->running = repmgrd_is_running(cell->node_info->conn);
if (repmgrd_info[i]->running == true)
{
maxlen_snprintf(repmgrd_info[i]->repmgrd_running, "%s", _("running"));
}
else
{
maxlen_snprintf(repmgrd_info[i]->repmgrd_running, "%s", _("not running"));
}
if (repmgrd_info[i]->pid == UNKNOWN_PID)
{
maxlen_snprintf(repmgrd_info[i]->pid_text, "%s", _("n/a"));
}
else
{
maxlen_snprintf(repmgrd_info[i]->pid_text, "%i", repmgrd_info[i]->pid);
}
repmgrd_info[i]->paused = repmgrd_is_paused(cell->node_info->conn);
repmgrd_info[i]->recovery_type = get_recovery_type(cell->node_info->conn);
if (repmgrd_info[i]->recovery_type == RECTYPE_STANDBY)
{
repmgrd_info[i]->wal_paused_pending_wal = is_wal_replay_paused(cell->node_info->conn, true);
if (repmgrd_info[i]->wal_paused_pending_wal == true)
{
item_list_append_format(&warnings,
_("WAL replay is paused on node \"%s\" (ID: %i) with WAL replay pending; this node cannot be manually promoted until WAL replay is resumed"),
cell->node_info->node_name, cell->node_info->node_id);
}
}
repmgrd_info[i]->upstream_last_seen = get_upstream_last_seen(cell->node_info->conn, cell->node_info->type);
if (repmgrd_info[i]->upstream_last_seen < 0)
{
maxlen_snprintf(repmgrd_info[i]->upstream_last_seen_text, "%s", _("n/a"));
}
else
{
if (runtime_options.compact == true)
{
maxlen_snprintf(repmgrd_info[i]->upstream_last_seen_text, _("%i sec(s) ago"), repmgrd_info[i]->upstream_last_seen);
}
else
{
maxlen_snprintf(repmgrd_info[i]->upstream_last_seen_text, _("%i second(s) ago"), repmgrd_info[i]->upstream_last_seen);
}
}
}
initPQExpBuffer(&node_status);
initPQExpBuffer(&upstream);
(void)format_node_status(cell->node_info, &node_status, &upstream, &warnings);
snprintf(repmgrd_info[i]->pg_running_text, sizeof(cell->node_info->details),
"%s", node_status.data);
snprintf(cell->node_info->upstream_node_name, sizeof(cell->node_info->upstream_node_name),
"%s", upstream.data);
termPQExpBuffer(&node_status);
termPQExpBuffer(&upstream);
PQfinish(cell->node_info->conn);
headers_status[STATUS_NAME].cur_length = strlen(cell->node_info->node_name);
headers_status[STATUS_ROLE].cur_length = strlen(get_node_type_string(cell->node_info->type));
headers_status[STATUS_PG].cur_length = strlen(repmgrd_info[i]->pg_running_text);
headers_status[STATUS_UPSTREAM_NAME].cur_length = strlen(cell->node_info->upstream_node_name);
if (runtime_options.detail == true)
{
PQExpBufferData buf;
headers_status[STATUS_LOCATION].cur_length = strlen(cell->node_info->location);
initPQExpBuffer(&buf);
appendPQExpBuffer(&buf, "%i", cell->node_info->priority);
headers_status[STATUS_PRIORITY].cur_length = strlen(buf.data);
termPQExpBuffer(&buf);
}
headers_status[STATUS_PID].cur_length = strlen(repmgrd_info[i]->pid_text);
headers_status[STATUS_REPMGRD].cur_length = strlen(repmgrd_info[i]->repmgrd_running);
headers_status[STATUS_UPSTREAM_LAST_SEEN].cur_length = strlen(repmgrd_info[i]->upstream_last_seen_text);
for (j = 0; j < STATUS_HEADER_COUNT; j++)
{
if (headers_status[j].cur_length > headers_status[j].max_length)
{
headers_status[j].max_length = headers_status[j].cur_length;
}
}
i++;
}
/* Print column header row (text mode only) */
if (runtime_options.output_mode == OM_TEXT)
{
print_status_header(STATUS_HEADER_COUNT, headers_status);
}
i = 0;
for (cell = nodes.head; cell; cell = cell->next)
{
if (runtime_options.output_mode == OM_CSV)
{
int running = repmgrd_info[i]->running ? 1 : 0;
int paused = repmgrd_info[i]->paused ? 1 : 0;
/* If PostgreSQL is not running, repmgrd status is unknown */
if (repmgrd_info[i]->pg_running == false)
{
running = -1;
paused = -1;
}
printf("%i,%s,%s,%i,%i,%i,%i,%i,%i,%s\n",
cell->node_info->node_id,
cell->node_info->node_name,
get_node_type_string(cell->node_info->type),
repmgrd_info[i]->pg_running ? 1 : 0,
running,
repmgrd_info[i]->pid,
paused,
cell->node_info->priority,
repmgrd_info[i]->pid == UNKNOWN_PID
? -1
: repmgrd_info[i]->upstream_last_seen,
cell->node_info->location);
}
else
{
printf(" %-*i ", headers_status[STATUS_ID].max_length, cell->node_info->node_id);
printf("| %-*s ", headers_status[STATUS_NAME].max_length, cell->node_info->node_name);
printf("| %-*s ", headers_status[STATUS_ROLE].max_length, get_node_type_string(cell->node_info->type));
printf("| %-*s ", headers_status[STATUS_PG].max_length, repmgrd_info[i]->pg_running_text);
printf("| %-*s ", headers_status[STATUS_UPSTREAM_NAME].max_length, cell->node_info->upstream_node_name);
if (runtime_options.detail == true)
{
printf("| %-*s ", headers_status[STATUS_LOCATION].max_length, cell->node_info->location);
printf("| %-*i ", headers_status[STATUS_PRIORITY].max_length, cell->node_info->priority);
}
printf("| %-*s ", headers_status[STATUS_REPMGRD].max_length, repmgrd_info[i]->repmgrd_running);
printf("| %-*s ", headers_status[STATUS_PID].max_length, repmgrd_info[i]->pid_text);
if (repmgrd_info[i]->pid == UNKNOWN_PID)
{
printf("| %-*s ", headers_status[STATUS_PAUSED].max_length, _("n/a"));
printf("| %-*s ", headers_status[STATUS_UPSTREAM_LAST_SEEN].max_length, _("n/a"));
}
else
{
printf("| %-*s ", headers_status[STATUS_PAUSED].max_length, repmgrd_info[i]->paused ? _("yes") : _("no"));
printf("| %-*s ", headers_status[STATUS_UPSTREAM_LAST_SEEN].max_length, repmgrd_info[i]->upstream_last_seen_text);
}
printf("\n");
}
pfree(repmgrd_info[i]);
i++;
}
pfree(repmgrd_info);
/* emit any warnings */
if (warnings.head != NULL && runtime_options.terse == false && runtime_options.output_mode != OM_CSV)
{
ItemListCell *cell = NULL;
PQExpBufferData warning;
initPQExpBuffer(&warning);
appendPQExpBufferStr(&warning,
_("following issues were detected\n"));
for (cell = warnings.head; cell; cell = cell->next)
{
appendPQExpBuffer(&warning,
_(" - %s\n"), cell->string);
}
puts("");
log_warning("%s", warning.data);
termPQExpBuffer(&warning);
if (runtime_options.verbose == false && connection_error_found == true)
{
log_hint(_("execute with --verbose option to see connection error messages"));
}
}
}
void
do_service_pause(void)
{
_do_repmgr_pause(true);
}
void
do_service_unpause(void)
{
_do_repmgr_pause(false);
}
static void
_do_repmgr_pause(bool pause)
{
PGconn *conn = NULL;
NodeInfoList nodes = T_NODE_INFO_LIST_INITIALIZER;
NodeInfoListCell *cell = NULL;
int i;
int error_nodes = 0;
/* Connect to local database to obtain cluster connection data */
log_verbose(LOG_INFO, _("connecting to database"));
if (strlen(config_file_options.conninfo))
conn = establish_db_connection(config_file_options.conninfo, true);
else
conn = establish_db_connection_by_params(&source_conninfo, true);
fetch_node_records(conn, &nodes);
i = 0;
for (cell = nodes.head; cell; cell = cell->next)
{
log_verbose(LOG_DEBUG, "pausing node %i (%s)",
cell->node_info->node_id,
cell->node_info->node_name);
cell->node_info->conn = establish_db_connection_quiet(cell->node_info->conninfo);
if (PQstatus(cell->node_info->conn) != CONNECTION_OK)
{
log_warning(_("unable to connect to node %i"),
cell->node_info->node_id);
error_nodes++;
}
else
{
if (runtime_options.dry_run == true)
{
if (pause == true)
{
log_info(_("would pause node %i (%s) "),
cell->node_info->node_id,
cell->node_info->node_name);
}
else
{
log_info(_("would unpause node %i (%s) "),
cell->node_info->node_id,
cell->node_info->node_name);
}
}
else
{
bool success = repmgrd_pause(cell->node_info->conn, pause);
if (success == false)
error_nodes++;
log_notice(_("node %i (%s) %s"),
cell->node_info->node_id,
cell->node_info->node_name,
success == true
? pause == true ? "paused" : "unpaused"
: pause == true ? "not paused" : "not unpaused");
}
PQfinish(cell->node_info->conn);
}
i++;
}
if (error_nodes > 0)
{
if (pause == true)
{
log_error(_("unable to pause %i node(s)"), error_nodes);
}
else
{
log_error(_("unable to unpause %i node(s)"), error_nodes);
}
log_hint(_("execute \"repmgr service status\" to view current status"));
exit(ERR_REPMGRD_PAUSE);
}
exit(SUCCESS);
}
void
fetch_node_records(PGconn *conn, NodeInfoList *node_list)
{
bool success = get_all_node_records_with_upstream(conn, node_list);
if (success == false)
{
/* get_all_node_records() will display any error message */
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
if (node_list->node_count == 0)
{
log_error(_("no node records were found"));
log_hint(_("ensure at least one node is registered"));
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
}
void do_service_help(void)
{
print_help_header();
printf(_("Usage:\n"));
printf(_(" %s [OPTIONS] service status\n"), progname());
printf(_(" %s [OPTIONS] service pause\n"), progname());
printf(_(" %s [OPTIONS] service unpause\n"), progname());
puts("");
printf(_("SERVICE STATUS\n"));
puts("");
printf(_(" \"service status\" shows the status of repmgrd on each node in the cluster\n"));
puts("");
printf(_(" --csv emit output as CSV\n"));
printf(_(" --detail show additional detail\n"));
printf(_(" --verbose show text of database connection error messages\n"));
puts("");
printf(_("SERVICE PAUSE\n"));
puts("");
printf(_(" \"service pause\" instructs repmgrd on each node to pause failover detection\n"));
puts("");
printf(_(" --dry-run check if nodes are reachable but don't pause repmgrd\n"));
puts("");
printf(_("SERVICE UNPAUSE\n"));
puts("");
printf(_(" \"service unpause\" instructs repmgrd on each node to resume failover detection\n"));
puts("");
printf(_(" --dry-run check if nodes are reachable but don't unpause repmgrd\n"));
puts("");
puts("");
printf(_("%s home page: <%s>\n"), "repmgr", REPMGR_URL);
}

File diff suppressed because it is too large Load Diff

View File

@@ -1,6 +1,6 @@
/* /*
* repmgr-action-standby.h * repmgr-action-standby.h
* Copyright (c) EnterpriseDB Corporation, 2010-2021 * Copyright (c) 2ndQuadrant, 2010-2019
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by

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