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18 Commits

Author SHA1 Message Date
Ian Barwick
54a4d1e444 README: clarify that the repmgr metadatabase must be part of the replication cluster 2016-10-26 20:28:22 +09:00
Ian Barwick
d4b8c034e9 Update HISTORY 2016-10-24 09:03:46 +09:00
Ian Barwick
b8f4c35810 Merge branch 'master' of github.com:2ndQuadrant/repmgr into REL3_2_STABLE
Bump version to 3.2.1
2016-10-24 08:14:04 +09:00
Ian Barwick
d2c09a1f71 repmgr: clean up runtime options structure
Place elements in a sensible order and split the associated initializer
macro over multiple lines for easier editing.

Also move a few related global variables into to the structure to keep
everything in the same place.
2016-10-11 13:06:09 +09:00
Ian Barwick
2389101ae9 "pg_logical/snapshot" -> "pg_logical/snapshots" 2016-10-11 13:06:04 +09:00
Gianni Ciolli
cbc2841433 When restoring from Barman, create pg_logical subdirectories
Nodes cloned from Barman backups were missing these subdirectories,
and so they were unable to start when promoted.
2016-10-11 13:05:48 +09:00
Ian Barwick
2bc877114c repmgr: simplify LSN parsing
Also silences a compiler warning.
2016-10-10 22:57:24 +09:00
Ian Barwick
30c5cc86f3 Update README
Also reorder HISTORY entries.
2016-10-10 15:12:48 +09:00
Ian Barwick
b977b48aee repmgr: standardize SSH-related error messages 2016-10-07 07:48:52 +09:00
Ian Barwick
108bdeb269 Add 'cluster crosscheck' to help output detail
Per GitHub #243.
2016-10-06 07:39:29 +09:00
Ian Barwick
fefa43e3a6 Minor README fix 2016-10-05 16:49:01 +09:00
Ian Barwick
c1a1fe6f82 Update README
`--ignore-external-config-files` deprecated
2016-10-05 16:48:40 +09:00
Ian Barwick
4dc3a05e8d Update history 2016-10-05 13:58:05 +09:00
Ian Barwick
5945accd84 Add documentation for repmgrd failover process and failed node fencing
Addresses GitHub #200.
2016-10-05 13:58:01 +09:00
Ian Barwick
15cbda9ec3 repmgr: consistent error message style 2016-10-05 13:57:57 +09:00
Ian Barwick
358559acc4 Update barman-wal-restore documentation
Barman 2.0 provides this in a separate, more convenient `barman-cli` package;
document this and add note about previous `barman-wal-restore.py` script.
2016-10-03 16:04:02 +09:00
Ian Barwick
0a9f8e160a Tweak repmgr.conf.sample
Put `monitor_interval_secs` at the start of the `repmgrd` section, as it's
a very fundamental configuration item.
2016-10-03 16:03:59 +09:00
Ian Barwick
a2d67e85de Bump version
3.2
2016-09-30 15:13:56 +09:00
35 changed files with 765 additions and 1964 deletions

View File

@@ -2,7 +2,7 @@ License and Contributions
=========================
`repmgr` is licensed under the GPL v3. All of its code and documentation is
Copyright 2010-2017, 2ndQuadrant Limited. See the files COPYRIGHT and LICENSE for
Copyright 2010-2016, 2ndQuadrant Limited. See the files COPYRIGHT and LICENSE for
details.
The development of repmgr has primarily been sponsored by 2ndQuadrant customers.

View File

@@ -1,4 +1,4 @@
Copyright (c) 2010-2017, 2ndQuadrant Limited
Copyright (c) 2010-2016, 2ndQuadrant Limited
All rights reserved.
This program is free software: you can redistribute it and/or modify

38
HISTORY
View File

@@ -1,41 +1,3 @@
3.3.2 2017-06-01
Add support for PostgreSQL 10 (Ian)
repmgr: ensure --replication-user option is honoured when passing database
connection parameters as a conninfo string (Ian)
repmgr: improve detection of pg_rewind on remote server (Ian)
repmgr: add DETAIL log output for additional clarification of error messages (Ian)
repmgr: suppress various spurious error messages in `standby follow` and
`standby switchover` (Ian)
repmgr: add missing `-P` option (Ian)
repmgrd: monitoring statistic reporting fixes (Ian)
3.3.1 2017-03-13
repmgrd: prevent invalid apply lag value being written to the
monitoring table (Ian)
repmgrd: fix error in XLogRecPtr conversion when calculating
monitoring statistics (Ian)
repmgr: if replication slots in use, where possible delete slot on old
upstream node after following new upstream (Ian)
repmgr: improve logging of rsync actions (Ian)
repmgr: improve `standby clone` when synchronous replication in use (Ian)
repmgr: stricter checking of allowed node id values
repmgr: enable `master register --force` when there is a foreign key
dependency from a standby node (Ian)
3.3 2016-12-27
repmgr: always log to STDERR even if log facility defined (Ian)
repmgr: add --log-to-file to log repmgr output to the defined
log facility (Ian)
repmgr: improve handling of command line parameter errors (Ian)
repmgr: add option --upstream-conninfo to explicitly set
'primary_conninfo' in recovery.conf (Ian)
repmgr: enable a standby to be registered which isn't running (Ian)
repmgr: enable `standby register --force` to update a node record
with cascaded downstream node records (Ian)
repmgr: add option `--no-conninfo-password` (Abhijit, Ian)
repmgr: add initial support for PostgreSQL 10.0 (Ian)
repmgr: escape values in primary_conninfo if needed (Ian)
3.2.1 2016-10-24
repmgr: require a valid repmgr cluster name unless -F/--force
supplied (Ian)

View File

@@ -1,16 +1,15 @@
#
# Makefile
# Copyright (c) 2ndQuadrant, 2010-2017
# Copyright (c) 2ndQuadrant, 2010-2016
HEADERS = $(wildcard *.h)
repmgrd_OBJS = dbutils.o config.o repmgrd.o log.o strutil.o
repmgr_OBJS = dbutils.o check_dir.o config.o repmgr.o log.o strutil.o dirmod.o compat.o
repmgr_OBJS = dbutils.o check_dir.o config.o repmgr.o log.o strutil.o dirmod.o
DATA = repmgr.sql uninstall_repmgr.sql
REGRESS = repmgr_funcs repmgr_test
PG_CPPFLAGS = -I$(includedir_internal) -I$(libpq_srcdir)
PG_CPPFLAGS = -I$(libpq_srcdir)
PG_LIBS = $(libpq_pgport)
@@ -18,11 +17,11 @@ all: repmgrd repmgr
$(MAKE) -C sql
repmgrd: $(repmgrd_OBJS)
$(CC) -o repmgrd $(CFLAGS) $(repmgrd_OBJS) $(PG_LIBS) $(LDFLAGS) $(LDFLAGS_EX)
$(CC) -o repmgrd $(CFLAGS) $(repmgrd_OBJS) $(PG_LIBS) $(LDFLAGS) $(LDFLAGS_EX) $(LIBS)
$(MAKE) -C sql
repmgr: $(repmgr_OBJS)
$(CC) -o repmgr $(CFLAGS) $(repmgr_OBJS) $(PG_LIBS) $(LDFLAGS) $(LDFLAGS_EX)
$(CC) -o repmgr $(CFLAGS) $(repmgr_OBJS) $(PG_LIBS) $(LDFLAGS) $(LDFLAGS_EX) $(LIBS)
# Make all objects depend on all include files. This is a bit of a
# shotgun approach, but the codebase is small enough that a complete rebuild

200
README.md
View File

@@ -7,7 +7,7 @@ replication capabilities with utilities to set up standby servers, monitor
replication, and perform administrative tasks such as failover or switchover
operations.
The current `repmgr` version (3.3) supports all PostgreSQL versions from
The current `repmgr` version, 3.2, supports all PostgreSQL versions from
9.3 to 9.6.
Overview
@@ -230,29 +230,15 @@ The configuration file will be searched for in the following locations:
Note that if a file is explicitly specified with `-f/--config-file`, an error will
be raised if it is not found or not readable and no attempt will be made to check
default locations; this is to prevent `repmgr` unexpectedly reading the wrong file.
default locations; this is to prevent `repmgr` reading the wrong file.
For a full list of annotated configuration items, see the file `repmgr.conf.sample`.
The following parameters in the configuration file can be overridden with
command line options:
- `log_level` with `-L/--log-level`
- `pg_bindir` with `-b/--pg_bindir`
### Logging
By default `repmgr` and `repmgrd` will log directly to `STDERR`. For `repmgrd`
we recommend capturing output in a logfile or using your system's log facility;
see `repmgr.conf.sample` for details.
As a command line utility, `repmgr` will log directly to the console by default
(this is a change in behaviour from versions before 3.3, where it would always
log to the same location as `repmgrd`). However in some circumstances, such as
when `repmgr` is executed by `repmgrd` during a failover event, it makes sense to
capture `repmgr`'s log output - this can be done by supplying the command-line
option `--log-to-file` to `repmgr`.
- `-L/--log-level`
- `-b/--pg_bindir`
### Command line options and environment variables
@@ -289,14 +275,14 @@ Setting up a simple replication cluster with repmgr
The following section will describe how to set up a basic replication cluster
with a master and a standby server using the `repmgr` command line tool.
It is assumed PostgreSQL is installed on both servers in the cluster,
`rsync` is available and passwordless SSH connections are possible between
`rsync` is available and password-less SSH connections are possible between
both servers.
* * *
> *TIP*: for testing `repmgr`, it's possible to use multiple PostgreSQL
> instances running on different ports on the same computer, with
> passwordless SSH access to `localhost` enabled.
> password-less SSH access to `localhost` enabled.
* * *
@@ -333,11 +319,10 @@ The following replication settings may need to be adjusted:
archive_command = '/bin/true'
# If cloning using rsync, or you have configured `pg_basebackup_options`
# in `repmgr.conf` to include the setting `--xlog-method=fetch` (from
# PostgreSQL 10 `--wal-method=fetch`), *and* you have not set
# `restore_command` in `repmgr.conf`to fetch WAL files from another
# source such as Barman, you'll need to set `wal_keep_segments` to a
# high enough value to ensure that all WAL files generated while
# in `repmgr.conf` to include the setting `--xlog-method=fetch`, *and*
# you have not set `restore_command` in `repmgr.conf`to fetch WAL files
# from another source such as Barman, you'll need to set `wal_keep_segments`
# to a high enough value to ensure that all WAL files generated while
# the standby is being cloned are retained until the standby starts up.
# wal_keep_segments = 5000
@@ -391,8 +376,7 @@ least the following parameters:
- `cluster`: an arbitrary name for the replication cluster; this must be identical
on all nodes
- `node`: a unique integer identifying the node; note this must be a positive
32 bit signed integer between 1 and 2147483647
- `node`: a unique integer identifying the node
- `node_name`: a unique string identifying the node; we recommend a name
specific to the server (e.g. 'server_1'); avoid names indicating the
current replication role like 'master' or 'standby' as the server's
@@ -429,7 +413,7 @@ be registered with `repmgr`, which creates the `repmgr` database and adds
a metadata record for the server:
$ repmgr -f repmgr.conf master register
NOTICE: master node correctly registered for cluster test with id 1 (conninfo: host=repmgr_node1 user=repmgr dbname=repmgr)
[2016-01-07 16:56:46] [NOTICE] master node correctly registered for cluster test with id 1 (conninfo: host=repmgr_node1 user=repmgr dbname=repmgr)
The metadata record looks like this:
@@ -456,13 +440,13 @@ the values `node`, `node_name` and `conninfo` adjusted accordingly, e.g.:
Clone the standby with:
$ repmgr -h repmgr_node1 -U repmgr -d repmgr -D /path/to/node2/data/ -f /etc/repmgr.conf standby clone
NOTICE: destination directory '/path/to/node2/data/' provided
NOTICE: starting backup...
HINT: this may take some time; consider using the -c/--fast-checkpoint option
[2016-01-07 17:21:26] [NOTICE] destination directory '/path/to/node2/data/' provided
[2016-01-07 17:21:26] [NOTICE] starting backup...
[2016-01-07 17:21:26] [HINT] this may take some time; consider using the -c/--fast-checkpoint option
NOTICE: pg_stop_backup complete, all required WAL segments have been archived
NOTICE: standby clone (using pg_basebackup) complete
NOTICE: you can now start your PostgreSQL server
HINT: for example : pg_ctl -D /path/to/node2/data/ start
[2016-01-07 17:21:28] [NOTICE] standby clone (using pg_basebackup) complete
[2016-01-07 17:21:28] [NOTICE] you can now start your PostgreSQL server
[2016-01-07 17:21:28] [HINT] for example : pg_ctl -D /path/to/node2/data/ start
This will clone the PostgreSQL data directory files from the master at `repmgr_node1`
using PostgreSQL's `pg_basebackup` utility. A `recovery.conf` file containing the
@@ -503,8 +487,7 @@ place. To ensure this happens when using the default `pg_basebackup` method,
`repmgr` will set `pg_basebackup`'s `--xlog-method` parameter to `stream`,
which will ensure all WAL files generated during the cloning process are
streamed in parallel with the main backup. Note that this requires two
replication connections to be available (`repmgr` will verify sufficient
connections are available before attempting to clone).
replication connections to be available.
To override this behaviour, in `repmgr.conf` set `pg_basebackup`'s
`--xlog-method` parameter to `fetch`:
@@ -516,9 +499,6 @@ See the `pg_basebackup` documentation for details:
https://www.postgresql.org/docs/current/static/app-pgbasebackup.html
> *NOTE*: From PostgreSQL 10, `pg_basebackup`'s `--xlog-method` parameter
> has been renamed to `--wal-method`.
Make any adjustments to the standby's PostgreSQL configuration files now,
then start the server.
@@ -561,8 +541,8 @@ Connect to the master server and execute:
Register the standby server with:
$ repmgr -f /etc/repmgr.conf standby register
NOTICE: standby node correctly registered for cluster test with id 2 (conninfo: host=repmgr_node2 user=repmgr dbname=repmgr)
repmgr -f /etc/repmgr.conf standby register
[2016-01-08 11:13:16] [NOTICE] standby node correctly registered for cluster test with id 2 (conninfo: host=repmgr_node2 user=repmgr dbname=repmgr)
Connect to the standby server's `repmgr` database and check the `repl_nodes`
table:
@@ -593,21 +573,6 @@ to effectively manage cascading replication (see below).
* * *
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
a complex replication cluster. In this case, by using the `-F/--force`
option and providing the connection parameters to the master server,
the standby can be registered.
Similarly, with cascading replication it may be necessary to register
a standby whose upstream node has not yet been registered - in this case,
using `-F/--force` will result in the creation of an inactive placeholder
record for the upstream node, which will however later need to be registered
with the `-F/--force` option too.
When used with `standby register`, care should be taken that use of the
`-F/--force` option does not result in an incorrectly configured cluster.
### Using Barman to clone a standby
`repmgr standby clone` also supports Barman, the Backup and
@@ -676,13 +641,13 @@ specify this in `repmgr.conf` with `barman_config`:
Now we can clone a standby using the Barman server:
$ repmgr -h node1 -d repmgr -D 9.5/main -f /etc/repmgr.conf standby clone
NOTICE: destination directory '9.5/main' provided
NOTICE: getting backup from Barman...
NOTICE: standby clone (from Barman) complete
NOTICE: you can now start your PostgreSQL server
HINT: for example : pg_ctl -D 9.5/data start
HINT: After starting the server, you need to register this standby with "repmgr standby register"
$ repmgr -h node1 -D 9.5/main -f /etc/repmgr.conf standby clone
[2016-06-12 20:08:35] [NOTICE] destination directory '9.5/main' provided
[2016-06-12 20:08:35] [NOTICE] getting backup from Barman...
[2016-06-12 20:08:36] [NOTICE] standby clone (from Barman) complete
[2016-06-12 20:08:36] [NOTICE] you can now start your PostgreSQL server
[2016-06-12 20:08:36] [HINT] for example : pg_ctl -D 9.5/data start
[2016-06-12 20:08:36] [HINT] After starting the server, you need to register this standby with "repmgr standby register"
@@ -742,22 +707,13 @@ string passed to `repmgr` with `-d/--dbname` (see above for details), and/or set
appropriate environment variables.
Note that PostgreSQL will always set explicit defaults for `sslmode` and
`sslcompression` (and from PostgreSQL 10.0 also `target_session_attrs`).
`sslcompression`.
If `application_name` is set in the standby's `conninfo` parameter in
`repmgr.conf`, this value will be appended to `primary_conninfo`, otherwise
`repmgr` will set `application_name` to the same value as the `node_name`
parameter.
By default `repmgr` assumes the user who owns the `repmgr` metadatabase will
also be the replication user; a different replication user can be specified
with `--replication-user`.
If the upstream server requires a password, and this was provided via
`PGPASSWORD`, `.pgpass` etc., by default `repmgr` will include this in
`primary_conninfo`. Use the command line option `--no-conninfo-password` to
suppress this.
Setting up cascading replication with repmgr
--------------------------------------------
@@ -791,15 +747,15 @@ created standby. Clone this standby (using the connection parameters
for the existing standby) and register it:
$ repmgr -h repmgr_node2 -U repmgr -d repmgr -D /path/to/node3/data/ -f /etc/repmgr.conf standby clone
NOTICE: destination directory 'node_3/data/' provided
NOTICE: starting backup (using pg_basebackup)...
HINT: this may take some time; consider using the -c/--fast-checkpoint option
NOTICE: standby clone (using pg_basebackup) complete
NOTICE: you can now start your PostgreSQL server
HINT: for example : pg_ctl -D /path/to/node_3/data start
[2016-01-08 13:44:52] [NOTICE] destination directory 'node_3/data/' provided
[2016-01-08 13:44:52] [NOTICE] starting backup (using pg_basebackup)...
[2016-01-08 13:44:52] [HINT] this may take some time; consider using the -c/--fast-checkpoint option
[2016-01-08 13:44:52] [NOTICE] standby clone (using pg_basebackup) complete
[2016-01-08 13:44:52] [NOTICE] you can now start your PostgreSQL server
[2016-01-08 13:44:52] [HINT] for example : pg_ctl -D /path/to/node_3/data start
$ repmgr -f /etc/repmgr.conf standby register
NOTICE: standby node correctly registered for cluster test with id 3 (conninfo: host=repmgr_node3 dbname=repmgr user=repmgr)
[2016-01-08 14:04:32] [NOTICE] standby node correctly registered for cluster test with id 3 (conninfo: host=repmgr_node3 dbname=repmgr user=repmgr)
After starting the standby, the `repl_nodes` table will look like this:
@@ -811,15 +767,6 @@ After starting the standby, the `repl_nodes` table will look like this:
3 | standby | 2 | test | node3 | host=repmgr_node3 dbname=repmgr user=repmgr | | 100 | t
(3 rows)
* * *
> *TIP*: under some circumstances when setting up a cascading replication
> cluster, you may wish to clone a downstream standby whose upstream node
> does not yet exist. In this case you can clone from the master (or
> another upstream node) and provide the parameter `--upstream-conninfo`
> to explictly set the upstream's `primary_conninfo` string in `recovery.conf`.
* * *
Using replication slots with repmgr
-----------------------------------
@@ -905,19 +852,19 @@ Promote the first standby with:
This will produce output similar to the following:
ERROR: connection to database failed: could not connect to server: Connection refused
[2016-01-08 16:07:31] [ERROR] connection to database failed: could not connect to server: Connection refused
Is the server running on host "repmgr_node1" (192.161.2.1) and accepting
TCP/IP connections on port 5432?
could not connect to server: Connection refused
Is the server running on host "repmgr_node1" (192.161.2.1) and accepting
TCP/IP connections on port 5432?
NOTICE: promoting standby
NOTICE: promoting server using '/usr/bin/postgres/pg_ctl -D /path/to/node_2/data promote'
[2016-01-08 16:07:31] [NOTICE] promoting standby
[2016-01-08 16:07:31] [NOTICE] promoting server using '/usr/bin/postgres/pg_ctl -D /path/to/node_2/data promote'
server promoting
NOTICE: STANDBY PROMOTE successful
[2016-01-08 16:07:33] [NOTICE] STANDBY PROMOTE successful
Note: the first `ERROR` is `repmgr` attempting to connect to the current
Note: the first `[ERROR]` is `repmgr` attempting to connect to the current
master to verify that it has failed. If a valid master is found, `repmgr`
will refuse to promote a standby.
@@ -949,7 +896,7 @@ end of the preceding section ("Promoting a standby server with repmgr"),
execute this:
$ repmgr -f /etc/repmgr.conf -D /path/to/node_3/data/ -h repmgr_node2 -U repmgr -d repmgr standby follow
NOTICE: restarting server using '/usr/bin/postgres/pg_ctl -D /path/to/node_3/data/ -w -m fast restart'
[2016-01-08 16:57:06] [NOTICE] restarting server using '/usr/bin/postgres/pg_ctl -D /path/to/node_3/data/ -w -m fast restart'
waiting for server to shut down.... done
server stopped
waiting for server to start.... done
@@ -1021,26 +968,26 @@ local server, as well as the normal default locations. `repmgr` will check
this file can be found before performing any further actions.
$ repmgr -f /etc/repmgr.conf -C /etc/repmgr.conf standby switchover -v
NOTICE: using configuration file "/etc/repmgr.conf"
NOTICE: switching current node 2 to master server and demoting current master to standby...
NOTICE: 5 files copied to /tmp/repmgr-node1-archive
NOTICE: connection to database failed: FATAL: the database system is shutting down
[2016-01-27 16:38:33] [NOTICE] using configuration file "/etc/repmgr.conf"
[2016-01-27 16:38:33] [NOTICE] switching current node 2 to master server and demoting current master to standby...
[2016-01-27 16:38:34] [NOTICE] 5 files copied to /tmp/repmgr-node1-archive
[2016-01-27 16:38:34] [NOTICE] connection to database failed: FATAL: the database system is shutting down
NOTICE: current master has been stopped
ERROR: connection to database failed: FATAL: the database system is shutting down
[2016-01-27 16:38:34] [NOTICE] current master has been stopped
[2016-01-27 16:38:34] [ERROR] connection to database failed: FATAL: the database system is shutting down
NOTICE: promoting standby
NOTICE: promoting server using '/usr/local/bin/pg_ctl -D /var/lib/postgresql/9.5/node_2/data promote'
[2016-01-27 16:38:34] [NOTICE] promoting standby
[2016-01-27 16:38:34] [NOTICE] promoting server using '/usr/local/bin/pg_ctl -D /var/lib/postgresql/9.5/node_2/data promote'
server promoting
NOTICE: STANDBY PROMOTE successful
NOTICE: Executing pg_rewind on old master server
NOTICE: 5 files copied to /var/lib/postgresql/9.5/data
NOTICE: restarting server using '/usr/local/bin/pg_ctl -w -D /var/lib/postgresql/9.5/node_1/data -m fast restart'
[2016-01-27 16:38:36] [NOTICE] STANDBY PROMOTE successful
[2016-01-27 16:38:36] [NOTICE] Executing pg_rewind on old master server
[2016-01-27 16:38:36] [NOTICE] 5 files copied to /var/lib/postgresql/9.5/data
[2016-01-27 16:38:36] [NOTICE] restarting server using '/usr/local/bin/pg_ctl -w -D /var/lib/postgresql/9.5/node_1/data -m fast restart'
pg_ctl: PID file "/var/lib/postgresql/9.5/node_1/data/postmaster.pid" does not exist
Is server running?
starting server anyway
NOTICE: node 1 is replicating in state "streaming"
NOTICE: switchover was successful
[2016-01-27 16:38:37] [NOTICE] node 1 is replicating in state "streaming"
[2016-01-27 16:38:37] [NOTICE] switchover was successful
Messages containing the line `connection to database failed: FATAL: the database
system is shutting down` are not errors - `repmgr` is polling the old master database
@@ -1146,22 +1093,18 @@ Automatic failover with `repmgrd`
and which can automate actions such as failover and updating standbys to
follow the new master.
To use `repmgrd` for automatic failover, `postgresql.conf` must contain the
following line:
shared_preload_libraries = 'repmgr_funcs'
(changing this setting requires a restart of PostgreSQL).
Additionally the following `repmgrd` options must be set in `repmgr.conf`:
To use `repmgrd` for automatic failover, the following `repmgrd` options must
be set in `repmgr.conf`:
failover=automatic
promote_command='repmgr standby promote -f /etc/repmgr.conf --log-to-file'
follow_command='repmgr standby follow -f /etc/repmgr.conf --log-to-file'
promote_command='repmgr standby promote -f /etc/repmgr.conf'
follow_command='repmgr standby follow -f /etc/repmgr.conf'
Note that the `--log-to-file` option will cause `repmgr`'s output to be logged to
the destination configured to receive log output for `repmgrd`.
See `repmgr.conf.sample` for further `repmgrd`-specific settings
(See `repmgr.conf.sample` for further `repmgrd`-specific settings).
Additionally, `postgresql.conf` must contain the following line:
shared_preload_libraries = 'repmgr_funcs'
When `failover` is set to `automatic`, upon detecting failure of the current
master, `repmgrd` will execute one of `promote_command` or `follow_command`,
@@ -1464,9 +1407,7 @@ functionality will be included in a feature release (e.g. 3.0.x to 3.1.x).
In general `repmgr` can be upgraded as-is without any further action required,
however feature releases may require the `repmgr` database to be upgraded.
An SQL script will be provided - please check the release notes for details:
* http://repmgr.org/release-notes-3.3.html#UPGRADING
An SQL script will be provided - please check the release notes for details.
Distribution-specific configuration
@@ -1569,7 +1510,7 @@ which contains connection details for the local database.
bootstrapping new installations. To update an existing but 'stale'
data directory (for example belonging to a failed master), `rsync`
must be used by specifying `--rsync-only`. In this case,
passwordless SSH connections between servers are required.
password-less SSH connections between servers are required.
* `standby promote`
@@ -1583,13 +1524,13 @@ which contains connection details for the local database.
by using `standby follow` (see below); if `repmgrd` is active, it will
handle this.
This command will fail with an error if the current master is still running.
This command will not function if the current master is still running.
* `standby switchover`
Promotes a standby to master and demotes the existing master to a standby.
This command must be run on the standby to be promoted, and requires a
passwordless SSH connection to the current master. Additionally the
password-less SSH connection to the current master. Additionally the
location of the master's `repmgr.conf` file must be provided with
`-C/--remote-config-file`.
@@ -1696,7 +1637,7 @@ which contains connection details for the local database.
overview of connections between all databases in the cluster.
These commands require a valid `repmgr.conf` file on each node.
Additionally passwordless `ssh` connections are required between
Additionally password-less `ssh` connections are required between
all nodes.
Example 1 (all nodes up):
@@ -1874,7 +1815,6 @@ Thanks from the repmgr core team.
Further reading
---------------
* http://blog.2ndquadrant.com/repmgr-3-2-is-here-barman-support-brand-new-high-availability-features/
* http://blog.2ndquadrant.com/improvements-in-repmgr-3-1-4/
* http://blog.2ndquadrant.com/managing-useful-clusters-repmgr/
* http://blog.2ndquadrant.com/easier_postgresql_90_clusters/

View File

@@ -1,6 +1,6 @@
/*
* check_dir.c - Directories management functions
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (C) 2ndQuadrant, 2010-2016
*
* 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

View File

@@ -1,6 +1,6 @@
/*
* check_dir.h
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (c) 2ndQuadrant, 2010-2016
*
* 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

107
compat.c
View File

@@ -1,107 +0,0 @@
/*
*
* compat.c
* Provides a couple of useful string utility functions adapted
* from the backend code, which are not publicly exposed. They're
* unlikely to change but it would be worth keeping an eye on them
* for any fixes/improvements
*
* Copyright (c) 2ndQuadrant, 2010-2017
*
* Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* 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 "compat.h"
/*
* Append the given string to the buffer, with suitable quoting for passing
* the string as a value, in a keyword/pair value in a libpq connection
* string
*
* This function is adapted from src/fe_utils/string_utils.c (before 9.6
* located in: src/bin/pg_dump/dumputils.c)
*/
void
appendConnStrVal(PQExpBuffer buf, const char *str)
{
const char *s;
bool needquotes;
/*
* If the string is one or more plain ASCII characters, no need to quote
* it. This is quite conservative, but better safe than sorry.
*/
needquotes = true;
for (s = str; *s; s++)
{
if (!((*s >= 'a' && *s <= 'z') || (*s >= 'A' && *s <= 'Z') ||
(*s >= '0' && *s <= '9') || *s == '_' || *s == '.'))
{
needquotes = true;
break;
}
needquotes = false;
}
if (needquotes)
{
appendPQExpBufferChar(buf, '\'');
while (*str)
{
/* ' and \ must be escaped by to \' and \\ */
if (*str == '\'' || *str == '\\')
appendPQExpBufferChar(buf, '\\');
appendPQExpBufferChar(buf, *str);
str++;
}
appendPQExpBufferChar(buf, '\'');
}
else
appendPQExpBufferStr(buf, str);
}
/*
* Adapted from: src/fe_utils/string_utils.c
*/
void
appendShellString(PQExpBuffer buf, const char *str)
{
const char *p;
appendPQExpBufferChar(buf, '\'');
for (p = str; *p; p++)
{
if (*p == '\n' || *p == '\r')
{
fprintf(stderr,
_("shell command argument contains a newline or carriage return: \"%s\"\n"),
str);
exit(ERR_BAD_CONFIG);
}
if (*p == '\'')
appendPQExpBufferStr(buf, "'\"'\"'");
else
appendPQExpBufferChar(buf, *p);
}
appendPQExpBufferChar(buf, '\'');
}

View File

@@ -1,29 +0,0 @@
/*
* compat.h
* Copyright (c) 2ndQuadrant, 2010-2017
*
* 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/>.
*
*/
#ifndef _COMPAT_H_
#define _COMPAT_H_
extern void
appendConnStrVal(PQExpBuffer buf, const char *str);
extern void
appendShellString(PQExpBuffer buf, const char *str);
#endif

329
config.c
View File

@@ -1,7 +1,7 @@
/*
* config.c - Functions to parse the config file
*
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (C) 2ndQuadrant, 2010-2016
*
* 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
@@ -10,11 +10,11 @@
*
* 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
* 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/>.
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
@@ -55,8 +55,8 @@ progname(void)
*
* Returns true if a configuration file could be parsed, otherwise false.
*
* Any *repmgrd-specific* configuration options added/changed in this function must also be
* added/changed in reload_config()
* Any configuration options changed in this function must also be changed in
* reload_config()
*
* NOTE: this function is called before the logger is set up, so we need
* to handle the verbose option ourselves; also the default log level is NOTICE,
@@ -99,9 +99,9 @@ load_config(const char *config_file, bool verbose, t_configuration_options *opti
/*
* If no configuration file was provided, attempt to find a default file
* in this order:
* - current directory
* - /etc/repmgr.conf
* - default sysconfdir
* - current directory
* - /etc/repmgr.conf
* - default sysconfdir
*
* here we just check for the existence of the file; parse_config()
* will handle read errors etc.
@@ -181,23 +181,6 @@ load_config(const char *config_file, bool verbose, t_configuration_options *opti
}
bool
parse_config(t_configuration_options *options)
{
/* Collate configuration file errors here for friendlier reporting */
static ItemList config_errors = { NULL, NULL };
_parse_config(options, &config_errors);
if (config_errors.head != NULL)
{
exit_with_errors(&config_errors);
}
return true;
}
/*
* Parse configuration file; if any errors are encountered,
* list them and exit.
@@ -205,8 +188,8 @@ parse_config(t_configuration_options *options)
* Ensure any default values set here are synced with repmgr.conf.sample
* and any other documentation.
*/
void
_parse_config(t_configuration_options *options, ItemList *error_list)
bool
parse_config(t_configuration_options *options)
{
FILE *fp;
char *s,
@@ -218,6 +201,9 @@ _parse_config(t_configuration_options *options, ItemList *error_list)
PQconninfoOption *conninfo_options;
char *conninfo_errmsg = NULL;
/* Collate configuration file errors here for friendlier reporting */
static ItemList config_errors = { NULL, NULL };
bool node_found = false;
/* Initialize configuration options with sensible defaults
@@ -225,7 +211,7 @@ _parse_config(t_configuration_options *options, ItemList *error_list)
* to be initialised here
*/
memset(options->cluster_name, 0, sizeof(options->cluster_name));
options->node = UNKNOWN_NODE_ID;
options->node = -1;
options->upstream_node = NO_UPSTREAM_NODE;
options->use_replication_slots = 0;
memset(options->conninfo, 0, sizeof(options->conninfo));
@@ -276,7 +262,7 @@ _parse_config(t_configuration_options *options, ItemList *error_list)
{
log_verbose(LOG_NOTICE, _("no configuration file provided and no default file found - "
"continuing with default values\n"));
return;
return true;
}
fp = fopen(config_file_path, "r");
@@ -321,11 +307,11 @@ _parse_config(t_configuration_options *options, ItemList *error_list)
strncpy(options->cluster_name, value, MAXLEN);
else if (strcmp(name, "node") == 0)
{
options->node = repmgr_atoi(value, "node", error_list, false);
options->node = repmgr_atoi(value, "node", &config_errors, false);
node_found = true;
}
else if (strcmp(name, "upstream_node") == 0)
options->upstream_node = repmgr_atoi(value, "upstream_node", error_list, false);
options->upstream_node = repmgr_atoi(value, "upstream_node", &config_errors, false);
else if (strcmp(name, "conninfo") == 0)
strncpy(options->conninfo, value, MAXLEN);
else if (strcmp(name, "barman_server") == 0)
@@ -356,11 +342,11 @@ _parse_config(t_configuration_options *options, ItemList *error_list)
}
else
{
item_list_append(error_list, _("value for 'failover' must be 'automatic' or 'manual'\n"));
item_list_append(&config_errors,_("value for 'failover' must be 'automatic' or 'manual'\n"));
}
}
else if (strcmp(name, "priority") == 0)
options->priority = repmgr_atoi(value, "priority", error_list, true);
options->priority = repmgr_atoi(value, "priority", &config_errors, true);
else if (strcmp(name, "node_name") == 0)
strncpy(options->node_name, value, MAXLEN);
else if (strcmp(name, "promote_command") == 0)
@@ -378,17 +364,17 @@ _parse_config(t_configuration_options *options, ItemList *error_list)
else if (strcmp(name, "service_promote_command") == 0)
strncpy(options->service_promote_command, value, MAXLEN);
else if (strcmp(name, "master_response_timeout") == 0)
options->master_response_timeout = repmgr_atoi(value, "master_response_timeout", error_list, false);
options->master_response_timeout = repmgr_atoi(value, "master_response_timeout", &config_errors, false);
/*
* 'primary_response_timeout' as synonym for 'master_response_timeout' -
* we'll switch terminology in a future release (3.1?)
*/
else if (strcmp(name, "primary_response_timeout") == 0)
options->master_response_timeout = repmgr_atoi(value, "primary_response_timeout", error_list, false);
options->master_response_timeout = repmgr_atoi(value, "primary_response_timeout", &config_errors, false);
else if (strcmp(name, "reconnect_attempts") == 0)
options->reconnect_attempts = repmgr_atoi(value, "reconnect_attempts", error_list, false);
options->reconnect_attempts = repmgr_atoi(value, "reconnect_attempts", &config_errors, false);
else if (strcmp(name, "reconnect_interval") == 0)
options->reconnect_interval = repmgr_atoi(value, "reconnect_interval", error_list, false);
options->reconnect_interval = repmgr_atoi(value, "reconnect_interval", &config_errors, false);
else if (strcmp(name, "pg_bindir") == 0)
strncpy(options->pg_bindir, value, MAXLEN);
else if (strcmp(name, "pg_ctl_options") == 0)
@@ -398,14 +384,14 @@ _parse_config(t_configuration_options *options, ItemList *error_list)
else if (strcmp(name, "logfile") == 0)
strncpy(options->logfile, value, MAXLEN);
else if (strcmp(name, "monitor_interval_secs") == 0)
options->monitor_interval_secs = repmgr_atoi(value, "monitor_interval_secs", error_list, false);
options->monitor_interval_secs = repmgr_atoi(value, "monitor_interval_secs", &config_errors, false);
else if (strcmp(name, "retry_promote_interval_secs") == 0)
options->retry_promote_interval_secs = repmgr_atoi(value, "retry_promote_interval_secs", error_list, false);
options->retry_promote_interval_secs = repmgr_atoi(value, "retry_promote_interval_secs", &config_errors, false);
else if (strcmp(name, "witness_repl_nodes_sync_interval_secs") == 0)
options->witness_repl_nodes_sync_interval_secs = repmgr_atoi(value, "witness_repl_nodes_sync_interval_secs", error_list, false);
options->witness_repl_nodes_sync_interval_secs = repmgr_atoi(value, "witness_repl_nodes_sync_interval_secs", &config_errors, false);
else if (strcmp(name, "use_replication_slots") == 0)
/* XXX we should have a dedicated boolean argument format */
options->use_replication_slots = repmgr_atoi(value, "use_replication_slots", error_list, false);
options->use_replication_slots = repmgr_atoi(value, "use_replication_slots", &config_errors, false);
else if (strcmp(name, "event_notification_command") == 0)
strncpy(options->event_notification_command, value, MAXLEN);
else if (strcmp(name, "event_notifications") == 0)
@@ -433,7 +419,7 @@ _parse_config(t_configuration_options *options, ItemList *error_list)
_("no value provided for parameter \"%s\""),
name);
item_list_append(error_list, error_message_buf);
item_list_append(&config_errors, error_message_buf);
}
}
@@ -442,15 +428,11 @@ _parse_config(t_configuration_options *options, ItemList *error_list)
if (node_found == false)
{
item_list_append(error_list, _("\"node\": parameter was not found"));
item_list_append(&config_errors, _("\"node\": parameter was not found"));
}
else if (options->node == 0)
{
item_list_append(error_list, _("\"node\": must be greater than zero"));
}
else if (options->node < 0)
{
item_list_append(error_list, _("\"node\": must be a positive signed 32 bit integer, i.e. 2147483647 or less"));
item_list_append(&config_errors, _("\"node\": must be greater than zero"));
}
if (strlen(options->conninfo))
@@ -470,11 +452,18 @@ _parse_config(t_configuration_options *options, ItemList *error_list)
_("\"conninfo\": %s"),
conninfo_errmsg);
item_list_append(error_list, error_message_buf);
item_list_append(&config_errors, error_message_buf);
}
PQconninfoFree(conninfo_options);
}
if (config_errors.head != NULL)
{
exit_with_errors(&config_errors);
}
return true;
}
@@ -564,85 +553,70 @@ parse_line(char *buf, char *name, char *value)
trim(value);
}
/*
* reload_config()
*
* This is only called by repmgrd after receiving a SIGHUP or when a monitoring
* loop is started up; it therefore only needs to reload options required
* by repmgrd, which are as follows:
*
* changeable options:
* - failover
* - follow_command
* - logfacility
* - logfile
* - loglevel
* - master_response_timeout
* - monitor_interval_secs
* - priority
* - promote_command
* - reconnect_attempts
* - reconnect_interval
* - retry_promote_interval_secs
* - witness_repl_nodes_sync_interval_secs
*
* non-changeable options:
* - cluster_name
* - conninfo
* - node
* - node_name
*
* extract with something like:
* grep local_options\\. repmgrd.c | perl -n -e '/local_options\.([\w_]+)/ && print qq|$1\n|;' | sort | uniq
*/
bool
reload_config(t_configuration_options *orig_options)
{
PGconn *conn;
t_configuration_options new_options = T_CONFIGURATION_OPTIONS_INITIALIZER;
t_configuration_options new_options;
bool config_changed = false;
bool log_config_changed = false;
static ItemList config_errors = { NULL, NULL };
/*
* Re-read the configuration file: repmgr.conf
*/
log_info(_("reloading configuration file\n"));
log_info(_("reloading configuration file and updating repmgr tables\n"));
_parse_config(&new_options, &config_errors);
if (config_errors.head != NULL)
parse_config(&new_options);
if (new_options.node == -1)
{
/* XXX dump errors to log */
log_warning(_("unable to parse new configuration, retaining current configuration\n"));
return false;
}
/* The following options cannot be changed */
if (strcmp(new_options.cluster_name, orig_options->cluster_name) != 0)
{
log_warning(_("cluster_name cannot be changed, retaining current configuration\n"));
log_warning(_("unable to change cluster name, retaining current configuration\n"));
return false;
}
if (new_options.node != orig_options->node)
{
log_warning(_("node ID cannot be changed, retaining current configuration\n"));
log_warning(_("unable to change node ID, retaining current configuration\n"));
return false;
}
if (strcmp(new_options.node_name, orig_options->node_name) != 0)
{
log_warning(_("node_name cannot be changed, keeping current configuration\n"));
log_warning(_("unable to change standby name, keeping current configuration\n"));
return false;
}
if (new_options.failover != MANUAL_FAILOVER && new_options.failover != AUTOMATIC_FAILOVER)
{
log_warning(_("new value for 'failover' must be 'automatic' or 'manual'\n"));
return false;
}
if (new_options.master_response_timeout <= 0)
{
log_warning(_("new value for 'master_response_timeout' must be greater than zero\n"));
return false;
}
if (new_options.reconnect_attempts < 0)
{
log_warning(_("new value for 'reconnect_attempts' must be zero or greater\n"));
return false;
}
if (new_options.reconnect_interval < 0)
{
log_warning(_("new value for 'reconnect_interval' must be zero or greater\n"));
return false;
}
if (strcmp(orig_options->conninfo, new_options.conninfo) != 0)
{
/* Test conninfo string works*/
/* Test conninfo string */
conn = establish_db_connection(new_options.conninfo, false);
if (!conn || (PQstatus(conn) != CONNECTION_OK))
{
@@ -659,6 +633,34 @@ reload_config(t_configuration_options *orig_options)
* to manage them
*/
/* cluster_name */
if (strcmp(orig_options->cluster_name, new_options.cluster_name) != 0)
{
strcpy(orig_options->cluster_name, new_options.cluster_name);
config_changed = true;
}
/* conninfo */
if (strcmp(orig_options->conninfo, new_options.conninfo) != 0)
{
strcpy(orig_options->conninfo, new_options.conninfo);
config_changed = true;
}
/* barman_server */
if (strcmp(orig_options->barman_server, new_options.barman_server) != 0)
{
strcpy(orig_options->barman_server, new_options.barman_server);
config_changed = true;
}
/* node */
if (orig_options->node != new_options.node)
{
orig_options->node = new_options.node;
config_changed = true;
}
/* failover */
if (orig_options->failover != new_options.failover)
{
@@ -666,27 +668,6 @@ reload_config(t_configuration_options *orig_options)
config_changed = true;
}
/* follow_command */
if (strcmp(orig_options->follow_command, new_options.follow_command) != 0)
{
strcpy(orig_options->follow_command, new_options.follow_command);
config_changed = true;
}
/* master_response_timeout */
if (orig_options->master_response_timeout != new_options.master_response_timeout)
{
orig_options->master_response_timeout = new_options.master_response_timeout;
config_changed = true;
}
/* monitor_interval_secs */
if (orig_options->monitor_interval_secs != new_options.monitor_interval_secs)
{
orig_options->monitor_interval_secs = new_options.monitor_interval_secs;
config_changed = true;
}
/* priority */
if (orig_options->priority != new_options.priority)
{
@@ -694,6 +675,13 @@ reload_config(t_configuration_options *orig_options)
config_changed = true;
}
/* node_name */
if (strcmp(orig_options->node_name, new_options.node_name) != 0)
{
strcpy(orig_options->node_name, new_options.node_name);
config_changed = true;
}
/* promote_command */
if (strcmp(orig_options->promote_command, new_options.promote_command) != 0)
{
@@ -701,6 +689,44 @@ reload_config(t_configuration_options *orig_options)
config_changed = true;
}
/* follow_command */
if (strcmp(orig_options->follow_command, new_options.follow_command) != 0)
{
strcpy(orig_options->follow_command, new_options.follow_command);
config_changed = true;
}
/*
* XXX These ones can change with a simple SIGHUP?
*
* strcpy (orig_options->loglevel, new_options.loglevel); strcpy
* (orig_options->logfacility, new_options.logfacility);
*
* logger_shutdown(); XXX do we have progname here ? logger_init(progname,
* orig_options.loglevel, orig_options.logfacility);
*/
/* rsync_options */
if (strcmp(orig_options->rsync_options, new_options.rsync_options) != 0)
{
strcpy(orig_options->rsync_options, new_options.rsync_options);
config_changed = true;
}
/* ssh_options */
if (strcmp(orig_options->ssh_options, new_options.ssh_options) != 0)
{
strcpy(orig_options->ssh_options, new_options.ssh_options);
config_changed = true;
}
/* master_response_timeout */
if (orig_options->master_response_timeout != new_options.master_response_timeout)
{
orig_options->master_response_timeout = new_options.master_response_timeout;
config_changed = true;
}
/* reconnect_attempts */
if (orig_options->reconnect_attempts != new_options.reconnect_attempts)
{
@@ -715,6 +741,27 @@ reload_config(t_configuration_options *orig_options)
config_changed = true;
}
/* pg_ctl_options */
if (strcmp(orig_options->pg_ctl_options, new_options.pg_ctl_options) != 0)
{
strcpy(orig_options->pg_ctl_options, new_options.pg_ctl_options);
config_changed = true;
}
/* pg_basebackup_options */
if (strcmp(orig_options->pg_basebackup_options, new_options.pg_basebackup_options) != 0)
{
strcpy(orig_options->pg_basebackup_options, new_options.pg_basebackup_options);
config_changed = true;
}
/* monitor_interval_secs */
if (orig_options->monitor_interval_secs != new_options.monitor_interval_secs)
{
orig_options->monitor_interval_secs = new_options.monitor_interval_secs;
config_changed = true;
}
/* retry_promote_interval_secs */
if (orig_options->retry_promote_interval_secs != new_options.retry_promote_interval_secs)
{
@@ -722,54 +769,20 @@ reload_config(t_configuration_options *orig_options)
config_changed = true;
}
/* witness_repl_nodes_sync_interval_secs */
if (orig_options->witness_repl_nodes_sync_interval_secs != new_options.witness_repl_nodes_sync_interval_secs)
/* use_replication_slots */
if (orig_options->use_replication_slots != new_options.use_replication_slots)
{
orig_options->witness_repl_nodes_sync_interval_secs = new_options.witness_repl_nodes_sync_interval_secs;
orig_options->use_replication_slots = new_options.use_replication_slots;
config_changed = true;
}
/*
* Handle changes to logging configuration
*/
if (strcmp(orig_options->logfacility, new_options.logfacility) != 0)
{
strcpy(orig_options->logfacility, new_options.logfacility);
log_config_changed = true;
}
if (strcmp(orig_options->logfile, new_options.logfile) != 0)
{
strcpy(orig_options->logfile, new_options.logfile);
log_config_changed = true;
}
if (strcmp(orig_options->loglevel, new_options.loglevel) != 0)
{
strcpy(orig_options->loglevel, new_options.loglevel);
log_config_changed = true;
}
if (log_config_changed == true)
{
log_notice(_("restarting logging with changed parameters\n"));
logger_shutdown();
logger_init(orig_options, progname());
}
if (config_changed == true)
{
log_notice(_("configuration file reloaded with changed parameters\n"));
log_debug(_("reload_config(): configuration has changed\n"));
}
/*
* if logging configuration changed, don't say the configuration didn't
* change, as it clearly has.
*/
else if (log_config_changed == false)
else
{
log_info(_("configuration has not changed\n"));
log_debug(_("reload_config(): configuration has not changed\n"));
}
return config_changed;
@@ -943,7 +956,7 @@ static void
parse_event_notifications_list(t_configuration_options *options, const char *arg)
{
const char *arg_ptr;
char event_type_buf[MAXLEN] = "";
char event_type_buf[MAXLEN] = "";
char *dst_ptr = event_type_buf;

View File

@@ -1,7 +1,7 @@
/*
* config.h
*
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (c) 2ndQuadrant, 2010-2016
*
* 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
@@ -97,7 +97,7 @@ typedef struct
* 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 { "", UNKNOWN_NODE_ID, NO_UPSTREAM_NODE, "", "", "", MANUAL_FAILOVER, -1, "", "", "", "", "", "", "", "", "", "", "", "", -1, -1, -1, "", "", "", "", "", 0, 0, 0, 0, "", { NULL, NULL }, { NULL, NULL } }
#define T_CONFIGURATION_OPTIONS_INITIALIZER { "", -1, NO_UPSTREAM_NODE, "", "", "", MANUAL_FAILOVER, -1, "", "", "", "", "", "", "", "", "", "", "", "", -1, -1, -1, "", "", "", "", "", 0, 0, 0, 0, "", { NULL, NULL }, { NULL, NULL } }
typedef struct ItemListCell
{
@@ -131,11 +131,8 @@ void set_progname(const char *argv0);
const char * progname(void);
bool load_config(const char *config_file, bool verbose, t_configuration_options *options, char *argv0);
void _parse_config(t_configuration_options *options, ItemList *error_list);
bool parse_config(t_configuration_options *options);
bool reload_config(t_configuration_options *orig_options);
bool parse_config(t_configuration_options *options);
void parse_line(char *buff, char *name, char *value);
char *trim(char *s);
void item_list_append(ItemList *item_list, char *error_message);

230
dbutils.c
View File

@@ -1,7 +1,7 @@
/*
* dbutils.c - Database connection/management functions
*
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (C) 2ndQuadrant, 2010-2016
*
* 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
@@ -33,15 +33,6 @@ char repmgr_schema[MAXLEN] = "";
char repmgr_schema_quoted[MAXLEN] = "";
static int _get_node_record(PGconn *conn, char *cluster, char *sqlquery, t_node_info *node_info);
static bool _set_config(PGconn *conn, const char *config_param, const char *sqlquery);
/*
* _establish_db_connection()
*
* Connect to a database using a conninfo string.
*
* NOTE: *do not* use this for replication connections; use establish_db_connection_by_params() instead.
*/
PGconn *
_establish_db_connection(const char *conninfo, const bool exit_on_error, const bool log_notice, const bool verbose_only)
@@ -86,19 +77,6 @@ _establish_db_connection(const char *conninfo, const bool exit_on_error, const b
}
}
/*
* set "synchronous_commit" to "local" in case synchronous replication is in use
*/
else if (set_config(conn, "synchronous_commit", "local") == false)
{
if (exit_on_error)
{
PQfinish(conn);
exit(ERR_DB_CON);
}
}
return conn;
}
@@ -138,12 +116,8 @@ PGconn *
establish_db_connection_by_params(const char *keywords[], const char *values[],
const bool exit_on_error)
{
PGconn *conn;
bool replication_connection = false;
int i;
/* Connect to the database using the provided parameters */
conn = PQconnectdbParams(keywords, values, true);
/* Make a connection to the database */
PGconn *conn = PQconnectdbParams(keywords, values, true);
/* Check to see that the backend connection was successfully made */
if ((PQstatus(conn) != CONNECTION_OK))
@@ -156,28 +130,6 @@ establish_db_connection_by_params(const char *keywords[], const char *values[],
exit(ERR_DB_CON);
}
}
else
{
/*
* set "synchronous_commit" to "local" in case synchronous replication is in
* use (provided this is not a replication connection)
*/
for (i = 0; keywords[i]; i++)
{
if (strcmp(keywords[i], "replication") == 0)
replication_connection = true;
}
if (replication_connection == false && set_config(conn, "synchronous_commit", "local") == false)
{
if (exit_on_error)
{
PQfinish(conn);
exit(ERR_DB_CON);
}
}
}
return conn;
}
@@ -327,6 +279,7 @@ is_pgup(PGconn *conn, int timeout)
/* Check the connection status twice in case it changes after reset */
bool twice = false;
/* Check the connection status twice in case it changes after reset */
for (;;)
{
if (PQstatus(conn) != CONNECTION_OK)
@@ -1132,25 +1085,15 @@ drop_replication_slot(PGconn *conn, char *slot_name)
bool
start_backup(PGconn *conn, char *first_wal_segment, bool fast_checkpoint, int server_version_num)
start_backup(PGconn *conn, char *first_wal_segment, bool fast_checkpoint)
{
char sqlquery[QUERY_STR_LEN];
PGresult *res;
if (server_version_num >= 100000)
{
sqlquery_snprintf(sqlquery,
"SELECT pg_catalog.pg_walfile_name(pg_catalog.pg_start_backup('repmgr_standby_clone_%ld', %s))",
time(NULL),
fast_checkpoint ? "TRUE" : "FALSE");
}
else
{
sqlquery_snprintf(sqlquery,
"SELECT pg_catalog.pg_xlogfile_name(pg_catalog.pg_start_backup('repmgr_standby_clone_%ld', %s))",
time(NULL),
fast_checkpoint ? "TRUE" : "FALSE");
}
sqlquery_snprintf(sqlquery,
"SELECT pg_catalog.pg_xlogfile_name(pg_catalog.pg_start_backup('repmgr_standby_clone_%ld', %s))",
time(NULL),
fast_checkpoint ? "TRUE" : "FALSE");
log_verbose(LOG_DEBUG, "start_backup():\n%s\n", sqlquery);
@@ -1178,19 +1121,12 @@ start_backup(PGconn *conn, char *first_wal_segment, bool fast_checkpoint, int se
bool
stop_backup(PGconn *conn, char *last_wal_segment, int server_version_num)
stop_backup(PGconn *conn, char *last_wal_segment)
{
char sqlquery[QUERY_STR_LEN];
PGresult *res;
if (server_version_num >= 100000)
{
sqlquery_snprintf(sqlquery, "SELECT pg_catalog.pg_walfile_name(pg_catalog.pg_stop_backup())");
}
else
{
sqlquery_snprintf(sqlquery, "SELECT pg_catalog.pg_xlogfile_name(pg_catalog.pg_stop_backup())");
}
sqlquery_snprintf(sqlquery, "SELECT pg_catalog.pg_xlogfile_name(pg_catalog.pg_stop_backup())");
res = PQexec(conn, sqlquery);
if (PQresultStatus(res) != PGRES_TUPLES_OK)
@@ -1215,12 +1151,19 @@ stop_backup(PGconn *conn, char *last_wal_segment, int server_version_num)
}
bool
_set_config(PGconn *conn, const char *config_param, const char *sqlquery)
set_config_bool(PGconn *conn, const char *config_param, bool state)
{
char sqlquery[QUERY_STR_LEN];
PGresult *res;
sqlquery_snprintf(sqlquery,
"SET %s TO %s",
config_param,
state ? "TRUE" : "FALSE");
log_verbose(LOG_DEBUG, "set_config_bool():\n%s\n", sqlquery);
res = PQexec(conn, sqlquery);
if (PQresultStatus(res) != PGRES_COMMAND_OK)
@@ -1235,36 +1178,6 @@ _set_config(PGconn *conn, const char *config_param, const char *sqlquery)
return true;
}
bool
set_config(PGconn *conn, const char *config_param, const char *config_value)
{
char sqlquery[QUERY_STR_LEN];
sqlquery_snprintf(sqlquery,
"SET %s TO '%s'",
config_param,
config_value);
log_verbose(LOG_DEBUG, "set_config():\n%s\n", sqlquery);
return _set_config(conn, config_param, sqlquery);
}
bool
set_config_bool(PGconn *conn, const char *config_param, bool state)
{
char sqlquery[QUERY_STR_LEN];
sqlquery_snprintf(sqlquery,
"SET %s TO %s",
config_param,
state ? "TRUE" : "FALSE");
log_verbose(LOG_DEBUG, "set_config_bool():\n%s\n", sqlquery);
return _set_config(conn, config_param, sqlquery);
}
/*
* witness_copy_node_records()
@@ -1524,11 +1437,10 @@ create_event_record(PGconn *conn, t_configuration_options *options, int node_id,
bool success = true;
struct tm ts;
/*
* Only attempt to write a record if a connection handle was provided.
* Also check that the repmgr schema has been properly initialised - if
* not it means no configuration file was provided, which can happen with
* e.g. `repmgr standby clone`, and we won't know which schema to write to.
/* Only attempt to write a record if a connection handle was provided.
Also check that the repmgr schema has been properly intialised - if
not it means no configuration file was provided, which can happen with
e.g. `repmgr standby clone`, and we won't know which schema to write to.
*/
if (conn != NULL && strcmp(repmgr_schema, DEFAULT_REPMGR_SCHEMA_PREFIX) != 0)
{
@@ -1717,89 +1629,6 @@ create_event_record(PGconn *conn, t_configuration_options *options, int node_id,
}
bool
update_node_record(PGconn *conn, char *action, int node, char *type, int upstream_node, char *cluster_name, char *node_name, char *conninfo, int priority, char *slot_name, bool active)
{
char sqlquery[QUERY_STR_LEN];
char upstream_node_id[MAXLEN];
char slot_name_buf[MAXLEN];
PGresult *res;
/* XXX this segment copied from create_node_record() */
if (upstream_node == NO_UPSTREAM_NODE)
{
/*
* No explicit upstream node id provided for standby - attempt to
* get primary node id
*/
if (strcmp(type, "standby") == 0)
{
int primary_node_id = get_master_node_id(conn, cluster_name);
maxlen_snprintf(upstream_node_id, "%i", primary_node_id);
}
else
{
maxlen_snprintf(upstream_node_id, "%s", "NULL");
}
}
else
{
maxlen_snprintf(upstream_node_id, "%i", upstream_node);
}
if (slot_name != NULL && slot_name[0])
{
maxlen_snprintf(slot_name_buf, "'%s'", slot_name);
}
else
{
maxlen_snprintf(slot_name_buf, "%s", "NULL");
}
/* XXX convert to placeholder query */
sqlquery_snprintf(sqlquery,
"UPDATE %s.repl_nodes SET "
" type = '%s', "
" upstream_node_id = %s, "
" cluster = '%s', "
" name = '%s', "
" conninfo = '%s', "
" slot_name = %s, "
" priority = %i, "
" active = %s "
" WHERE id = %i ",
get_repmgr_schema_quoted(conn),
type,
upstream_node_id,
cluster_name,
node_name,
conninfo,
slot_name_buf,
priority,
active == true ? "TRUE" : "FALSE",
node);
log_verbose(LOG_DEBUG, "update_node_record(): %s\n", sqlquery);
if (action != NULL)
{
log_verbose(LOG_DEBUG, "update_node_record(): action is \"%s\"\n", action);
}
res = PQexec(conn, sqlquery);
if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
{
log_err(_("Unable to update node record\n%s\n"),
PQerrorMessage(conn));
PQclear(res);
return false;
}
PQclear(res);
return true;
}
/*
* Update node record following change of status
* (e.g. inactive primary converted to standby)
@@ -1960,16 +1789,7 @@ _get_node_record(PGconn *conn, char *cluster, char *sqlquery, t_node_info *node_
node_info->node_id = atoi(PQgetvalue(res, 0, 0));
node_info->type = parse_node_type(PQgetvalue(res, 0, 1));
if (PQgetisnull(res, 0, 2))
{
node_info->upstream_node_id = NO_UPSTREAM_NODE;
}
else
{
node_info->upstream_node_id = atoi(PQgetvalue(res, 0, 2));
}
node_info->upstream_node_id = atoi(PQgetvalue(res, 0, 2));
strncpy(node_info->name, PQgetvalue(res, 0, 3), MAXLEN);
strncpy(node_info->conninfo_str, PQgetvalue(res, 0, 4), MAXLEN);
strncpy(node_info->slot_name, PQgetvalue(res, 0, 5), MAXLEN);

View File

@@ -1,7 +1,7 @@
/*
* dbutils.h
*
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (c) 2ndQuadrant, 2010-2016
*
* 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
@@ -122,16 +122,14 @@ char *get_repmgr_schema_quoted(PGconn *conn);
bool create_replication_slot(PGconn *conn, char *slot_name, int server_version_num, PQExpBufferData *error_msg);
int get_slot_record(PGconn *conn, char *slot_name, t_replication_slot *record);
bool drop_replication_slot(PGconn *conn, char *slot_name);
bool start_backup(PGconn *conn, char *first_wal_segment, bool fast_checkpoint, int server_version_num);
bool stop_backup(PGconn *conn, char *last_wal_segment, int server_version_num);
bool set_config(PGconn *conn, const char *config_param, const char *config_value);
bool start_backup(PGconn *conn, char *first_wal_segment, bool fast_checkpoint);
bool stop_backup(PGconn *conn, char *last_wal_segment);
bool set_config_bool(PGconn *conn, const char *config_param, bool state);
bool witness_copy_node_records(PGconn *masterconn, PGconn *witnessconn, char *cluster_name);
bool create_node_record(PGconn *conn, char *action, int node, char *type, int upstream_node, char *cluster_name, char *node_name, char *conninfo, int priority, char *slot_name, bool active);
bool delete_node_record(PGconn *conn, int node, char *action);
int get_node_record(PGconn *conn, char *cluster, int node_id, t_node_info *node_info);
int get_node_record_by_name(PGconn *conn, char *cluster, const char *node_name, t_node_info *node_info);
bool update_node_record(PGconn *conn, char *action, int node, char *type, int upstream_node, char *cluster_name, char *node_name, char *conninfo, int priority, char *slot_name, bool active);
bool update_node_record_status(PGconn *conn, char *cluster_name, int this_node_id, char *type, int upstream_node_id, bool active);
bool update_node_record_set_upstream(PGconn *conn, char *cluster_name, int this_node_id, int new_upstream_node_id);
bool create_event_record(PGconn *conn, t_configuration_options *options, int node_id, char *event, bool successful, char *details);

View File

@@ -3,7 +3,7 @@
* dirmod.c
* directory handling functions
*
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (C) 2ndQuadrant, 2010-2016
*
* Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California

View File

@@ -1,6 +1,6 @@
/*
* dirmod.h
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (c) 2ndQuadrant, 2010-2016
*
* 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

View File

@@ -53,7 +53,7 @@ will be carried out:
e.g. if a replication cluster is spread over multiple data centres, a split-brain
situation does not occur if there is a network failure between datacentres. Note
that if nodes are split evenly between data centres, a witness server can be
used to establish the "majority" data centre.
used to establish the "majority" daat centre.
* `repmgrd` polls all visible servers and waits for each node to return a valid LSN;
it updates the LSN previously stored for this node if it has increased since

View File

@@ -22,14 +22,15 @@ of this document).
* * *
In a failover situation, `repmgrd` promotes a standby to master by executing
the command defined in `promote_command`. Normally this would be something like:
In a failover situation, `repmgrd` promotes a standby to master by
executing the command defined in `promote_command`. Normally this
would be something like:
repmgr standby promote -f /etc/repmgr.conf
By wrapping this in a custom script which adjusts the `pgbouncer` configuration
on all nodes, it's possible to fence the failed master and redirect write
connections to the new master.
By wrapping this in a custom script which adjusts the `pgbouncer`
configuration on all nodes, it's possible to fence the failed master
and redirect write connections to the new master.
The script consists of three sections:
@@ -37,19 +38,20 @@ The script consists of three sections:
* the promotion command itself
* commands to reconfigure and restart `pgbouncer` on all nodes
Note that it requires password-less SSH access between all nodes to be able to
update the `pgbouncer` configuration files.
Note that it requires password-less SSH access between all nodes to be
able to update the `pgbouncer` configuration files.
For the purposes of this demonstration, we'll assume there are 3 nodes (master
and two standbys), with `pgbouncer` listening on port 6432 handling connections
to a database called `appdb`. The `postgres` system user must have write
access to the `pgbouncer` configuration files on all nodes. We'll assume
there's a main `pgbouncer` configuration file, `/etc/pgbouncer.ini`, which uses
the `%include` directive (available from PgBouncer 1.6) to include a separate
configuration file, `/etc/pgbouncer.database.ini`, which will be modified by
`repmgr`.
For the purposes of this demonstration, we'll assume there are 3 nodes
(master and two standbys), with `pgbouncer` listening on port 6432
handling connections to a database called `appdb`. The `postgres`
system user must have write access to the `pgbouncer` configuration
file on all nodes, assumed to be at `/etc/pgbouncer.ini`.
`/etc/pgbouncer.ini` should look something like this:
The script also requires a template file containing global `pgbouncer`
configuration, which should looks something like this (adjust
settings appropriately for your environment):
`/var/lib/postgres/repmgr/pgbouncer.ini.template`
[pgbouncer]
@@ -78,8 +80,6 @@ configuration file, `/etc/pgbouncer.database.ini`, which will be modified by
log_disconnections = 1
log_pooler_errors = 1
%include /etc/pgbouncer.database.ini
The actual script is as follows; adjust the configurable items as appropriate:
`/var/lib/postgres/repmgr/promote.sh`
@@ -91,52 +91,50 @@ The actual script is as follows; adjust the configurable items as appropriate:
# Configurable items
PGBOUNCER_HOSTS="node1 node2 node3"
PGBOUNCER_DATABASE_INI="/etc/pgbouncer.database.ini"
PGBOUNCER_DATABASE="appdb"
PGBOUNCER_PORT=6432
REPMGR_DB="repmgr"
REPMGR_USER="repmgr"
REPMGR_SCHEMA="repmgr_test"
PGBOUNCER_CONFIG="/etc/pgbouncer.ini"
PGBOUNCER_INI_TEMPLATE="/var/lib/postgres/repmgr/pgbouncer.ini.template"
PGBOUNCER_DATABASE="appdb"
# 1. Pause running pgbouncer instances
for HOST in $PGBOUNCER_HOSTS
do
psql -t -c "pause" -h $HOST -p $PGBOUNCER_PORT -U postgres pgbouncer
psql -t -c "pause" -h $HOST -p $PORT -U postgres pgbouncer
done
# 2. Promote this node from standby to master
repmgr standby promote -f /etc/repmgr.conf
# 3. Reconfigure pgbouncer instances
PGBOUNCER_DATABASE_INI_NEW="/tmp/pgbouncer.database.ini"
PGBOUNCER_INI_NEW="/tmp/pgbouncer.ini.new"
for HOST in $PGBOUNCER_HOSTS
do
# Recreate the pgbouncer config file
echo -e "[databases]\n" > $PGBOUNCER_DATABASE_INI_NEW
echo -e "[databases]\n" > $PGBOUNCER_INI_NEW
psql -d $REPMGR_DB -U $REPMGR_USER -t -A \
-c "SELECT '${PGBOUNCER_DATABASE}-rw= ' || conninfo || ' application_name=pgbouncer_${HOST}' \
FROM ${REPMGR_SCHEMA}.repl_nodes \
WHERE active = TRUE AND type='master'" >> $PGBOUNCER_DATABASE_INI_NEW
psql -d $REPMGR_DB -U $REPMGR_USER -t -A \
-c "SELECT '${PGBOUNCER_DATABASE}-ro= ' || conninfo || ' application_name=pgbouncer_${HOST}' \
-c "SELECT '$PGBOUNCER_DATABASE= ' || conninfo || ' application_name=pgbouncer_$HOST' \
FROM $REPMGR_SCHEMA.repl_nodes \
WHERE node_name='${HOST}'" >> $PGBOUNCER_DATABASE_INI_NEW
WHERE active = TRUE AND type='master'" >> $PGBOUNCER_INI_NEW
rsync $PGBOUNCER_DATABASE_INI_NEW $HOST:$PGBOUNCER_DATABASE_INI
cat $PGBOUNCER_INI_TEMPLATE >> $PGBOUNCER_INI_NEW
psql -tc "reload" -h $HOST -p $PGBOUNCER_PORT -U postgres pgbouncer
psql -tc "resume" -h $HOST -p $PGBOUNCER_PORT -U postgres pgbouncer
rsync $PGBOUNCER_INI_NEW $HOST:$PGBOUNCER_CONFIG
psql -tc "reload" -h $HOST -U postgres pgbouncer
psql -tc "resume" -h $HOST -U postgres pgbouncer
done
# Clean up generated file
rm $PGBOUNCER_DATABASE_INI_NEW
rm $PGBOUNCER_INI_NEW
echo "Reconfiguration of pgbouncer complete"

View File

@@ -1,6 +1,6 @@
/*
* errcode.h
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (C) 2ndQuadrant, 2010-2016
*
* 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

View File

@@ -1,18 +0,0 @@
/*
* repmgr_function.sql
* Copyright (c) 2ndQuadrant, 2010-2017
*
*/
-- SET SEARCH_PATH TO 'repmgr';
CREATE FUNCTION repmgr_update_standby_location(text) RETURNS boolean
AS '$libdir/repmgr_funcs', 'repmgr_update_standby_location'
LANGUAGE C STRICT;
CREATE FUNCTION repmgr_get_last_standby_location() RETURNS text
AS '$libdir/repmgr_funcs', 'repmgr_get_last_standby_location'
LANGUAGE C STRICT;
CREATE FUNCTION repmgr_update_last_updated() RETURNS TIMESTAMP WITH TIME ZONE
AS '$libdir/repmgr_funcs', 'repmgr_update_last_updated'
LANGUAGE C STRICT;
CREATE FUNCTION repmgr_get_last_updated() RETURNS TIMESTAMP WITH TIME ZONE
AS '$libdir/repmgr_funcs', 'repmgr_get_last_updated'
LANGUAGE C STRICT;

View File

@@ -1,24 +0,0 @@
select * from repmgr_update_standby_location('');
repmgr_update_standby_location
--------------------------------
f
(1 row)
select * from repmgr_get_last_standby_location();
repmgr_get_last_standby_location
----------------------------------
(1 row)
select * from repmgr_update_last_updated();
repmgr_update_last_updated
----------------------------
(1 row)
select * from repmgr_get_last_updated();
repmgr_get_last_updated
-------------------------
(1 row)

60
log.c
View File

@@ -1,6 +1,6 @@
/*
* log.c - Logging methods
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (C) 2ndQuadrant, 2010-2016
*
* This module is a set of methods for logging (currently only syslog)
*
@@ -48,11 +48,6 @@ int log_level = LOG_NOTICE;
int last_log_level = LOG_NOTICE;
int verbose_logging = false;
int terse_logging = false;
/*
* Global variable to be set by the main application to ensure any log output
* emitted before logger_init is called, is output in the correct format
*/
int logger_output_mode = OM_DAEMON;
extern void
stderr_log_with_level(const char *level_name, int level, const char *fmt, ...)
@@ -67,31 +62,22 @@ stderr_log_with_level(const char *level_name, int level, const char *fmt, ...)
static void
_stderr_log_with_level(const char *level_name, int level, const char *fmt, va_list ap)
{
char buf[100];
time_t t;
struct tm *tm;
char buff[100];
/*
* Store the requested level so that if there's a subsequent
* log_hint() or log_detail(), we can suppress that if appropriate.
* log_hint(), we can suppress that if appropriate.
*/
last_log_level = level;
if (log_level >= level)
{
/* Format log line prefix with timestamp if in daemon mode */
if (logger_output_mode == OM_DAEMON)
{
time_t t;
struct tm *tm;
time(&t);
tm = localtime(&t);
strftime(buf, 100, "[%Y-%m-%d %H:%M:%S]", tm);
fprintf(stderr, "%s [%s] ", buf, level_name);
}
else
{
fprintf(stderr, "%s: ", level_name);
}
time(&t);
tm = localtime(&t);
strftime(buff, 100, "[%Y-%m-%d %H:%M:%S]", tm);
fprintf(stderr, "%s [%s] ", buff, level_name);
vfprintf(stderr, fmt, ap);
@@ -113,20 +99,6 @@ log_hint(const char *fmt, ...)
}
void
log_detail(const char *fmt, ...)
{
va_list ap;
if (terse_logging == false)
{
va_start(ap, fmt);
_stderr_log_with_level("DETAIL", last_log_level, fmt, ap);
va_end(ap);
}
}
void
log_verbose(int level, const char *fmt, ...)
{
@@ -204,13 +176,6 @@ logger_init(t_configuration_options *opts, const char *ident)
stderr_log_warning(_("Invalid log level \"%s\" (available values: DEBUG, INFO, NOTICE, WARNING, ERR, ALERT, CRIT or EMERG)\n"), level);
}
/*
* STDERR only logging requested - finish here without setting up any further
* logging facility.
*/
if (logger_output_mode == OM_COMMAND_LINE)
return true;
if (facility && *facility)
{
@@ -271,10 +236,9 @@ logger_init(t_configuration_options *opts, const char *ident)
stderr_log_notice(_("Redirecting logging output to '%s'\n"), opts->logfile);
fd = freopen(opts->logfile, "a", stderr);
/*
* It's possible freopen() may still fail due to e.g. a race condition;
* as it's not feasible to restore stderr after a failed freopen(),
* we'll write to stdout as a last resort.
/* It's possible freopen() may still fail due to e.g. a race condition;
as it's not feasible to restore stderr after a failed freopen(),
we'll write to stdout as a last resort.
*/
if (fd == NULL)
{

8
log.h
View File

@@ -1,6 +1,6 @@
/*
* log.h
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (c) 2ndQuadrant, 2010-2016
*
* 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
@@ -25,9 +25,6 @@
#define REPMGR_SYSLOG 1
#define REPMGR_STDERR 2
#define OM_COMMAND_LINE 1
#define OM_DAEMON 2
extern void
stderr_log_with_level(const char *level_name, int level, const char *fmt,...)
__attribute__((format(PG_PRINTF_ATTRIBUTE, 3, 4)));
@@ -126,8 +123,6 @@ bool logger_shutdown(void);
void logger_set_verbose(void);
void logger_set_terse(void);
void log_detail(const char *fmt, ...)
__attribute__((format(PG_PRINTF_ATTRIBUTE, 1, 2)));
void log_hint(const char *fmt, ...)
__attribute__((format(PG_PRINTF_ATTRIBUTE, 1, 2)));
void log_verbose(int level, const char *fmt, ...)
@@ -137,6 +132,5 @@ extern int log_type;
extern int log_level;
extern int verbose_logging;
extern int terse_logging;
extern int logger_output_mode;
#endif /* _REPMGR_LOG_H_ */

1238
repmgr.c

File diff suppressed because it is too large Load Diff

View File

@@ -66,12 +66,6 @@
# (default: NOTICE)
#loglevel=NOTICE
# Note that logging facility settings will only apply to `repmgrd` by default;
# `repmgr` will always write to STDERR unless the switch `--log-to-file` is
# supplied, in which case it will log to the same destination as `repmgrd`.
# This is mainly intended for those cases when `repmgr` is executed directly
# by `repmgrd`.
# Logging facility: possible values are STDERR or - for Syslog integration - one of LOCAL0, LOCAL1, ..., LOCAL7, USER
# (default: STDERR)
#logfacility=STDERR
@@ -143,15 +137,8 @@
# external command arguments. Values shown are examples.
#pg_ctl_options='-s'
#pg_basebackup_options='--label=repmgr_backup'
#pg_basebackup_options='--xlog-method=s'
# This is the host name of the barman server, which is used for connecting over
# to the barman server (passwordless ssh keys should be in place)
#barman_server='backup_server'
# If you are placing the barman.conf file in a non-standard path, or using
# a name other than barman.conf, use this parameter to specify the path and
# name of the barman configuration file.
#barman_config='/path/to/barman.conf'
# Standby clone settings
# ----------------------
@@ -176,8 +163,9 @@
# monitoring interval in seconds; default is 2
#monitor_interval_secs=2
# Maximum number of seconds to wait for a response from the primary server
# before deciding it has failed.
# Number of seconds to wait for a response from the primary server before
# deciding it has failed.
#master_response_timeout=60
# Number of attempts at what interval (in seconds) to try and

View File

@@ -1,6 +1,6 @@
/*
* repmgr.h
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (c) 2ndQuadrant, 2010-2016
*
* 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
@@ -55,16 +55,13 @@
#define OPT_COPY_EXTERNAL_CONFIG_FILES 4
#define OPT_CONFIG_ARCHIVE_DIR 5
#define OPT_PG_REWIND 6
#define OPT_PWPROMPT 7
#define OPT_CSV 8
#define OPT_NODE 9
#define OPT_WITHOUT_BARMAN 10
#define OPT_NO_UPSTREAM_CONNECTION 11
#define OPT_REGISTER_WAIT 12
#define OPT_CLUSTER 13
#define OPT_LOG_TO_FILE 14
#define OPT_UPSTREAM_CONNINFO 15
#define OPT_NO_CONNINFO_PASSWORD 16
#define OPT_REPLICATION_USER 17
/* deprecated command line options */
#define OPT_INITDB_NO_PWPROMPT 998
@@ -83,11 +80,10 @@ typedef struct
bool verbose;
bool terse;
bool force;
char pg_bindir[MAXLEN]; /* overrides setting in repmgr.conf */
/* logging parameters */
char loglevel[MAXLEN]; /* overrides setting in repmgr.conf */
bool log_to_file;
/* options which override setting in repmgr.conf */
char loglevel[MAXLEN];
char pg_bindir[MAXLEN];
/* connection parameters */
char dbname[MAXLEN];
@@ -109,18 +105,13 @@ typedef struct
bool fast_checkpoint;
bool without_barman;
bool no_upstream_connection;
bool no_conninfo_password;
bool copy_external_config_files;
int copy_external_config_files_destination;
char upstream_conninfo[MAXLEN];
char replication_user[MAXLEN];
char recovery_min_apply_delay[MAXLEN];
/* standby register parameters */
bool wait_register_sync;
int wait_register_sync_seconds;
char recovery_min_apply_delay[MAXLEN];
/* witness create parameters */
bool witness_pwprompt;
@@ -149,17 +140,15 @@ typedef struct
#define T_RUNTIME_OPTIONS_INITIALIZER { \
/* general repmgr options */ \
"", false, false, false, "", \
/* logging parameters */ \
"", false, \
"", false, false, false, \
/* options which override setting in repmgr.conf */ \
"", "", \
/* connection parameters */ \
"", "", "", "", "", "", "", \
false, false, false, \
/* standby clone parameters */ \
false, DEFAULT_WAL_KEEP_SEGMENTS, false, false, false, false, false, false, \
false, CONFIG_FILE_SAMEPATH, "", "", "", \
/* standby register paarameters */ \
false, 0, \
CONFIG_FILE_SAMEPATH, false, 0, "", \
/* witness create parameters */ \
false, \
/* standby follow parameters */ \
@@ -192,10 +181,9 @@ typedef struct
{
char slot[MAXLEN];
char xlog_method[MAXLEN];
bool no_slot; /* from PostgreSQL 10 */
} t_basebackup_options;
#define T_BASEBACKUP_OPTIONS_INITIALIZER { "", "", false }
#define T_BASEBACKUP_OPTIONS_INITIALIZER { "", "" }
typedef struct
{

View File

@@ -1,7 +1,7 @@
/*
* repmgr.sql
*
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (C) 2ndQuadrant, 2010-2016
*
*/

223
repmgrd.c
View File

@@ -1,7 +1,7 @@
/*
* repmgrd.c - Replication manager daemon
*
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (C) 2ndQuadrant, 2010-2016
*
* This module connects to the nodes of a replication cluster and monitors
* how far are they from master
@@ -30,10 +30,18 @@
#include <stdlib.h>
#include <unistd.h>
#include "repmgr.h"
#include "config.h"
#include "log.h"
#include "strutil.h"
#include "version.h"
/* Required PostgreSQL headers */
#include "access/xlogdefs.h"
#include "pqexpbuffer.h"
/* Message strings passed in repmgrSharedState->location */
#define PASSIVE_NODE "PASSIVE_NODE"
@@ -63,7 +71,6 @@ bool failover_done = false;
bool manual_mode_upstream_disconnected = false;
char *pid_file = NULL;
int server_version_num = 0;
static void help(void);
static void usage(void);
@@ -138,6 +145,8 @@ main(int argc, char **argv)
FILE *fd;
int server_version_num = 0;
set_progname(argv[0]);
/* Disallow running as root to prevent directory ownership problems */
@@ -198,13 +207,6 @@ main(int argc, char **argv)
}
}
/*
* Tell the logger we're a daemon - this will ensure any output logged
* before the logger is initialized will be formatted correctly
*/
logger_output_mode = OM_DAEMON;
/*
* Parse the configuration file, if provided. If no configuration file
* was provided, or one was but was incomplete, parse_config() will
@@ -245,7 +247,6 @@ main(int argc, char **argv)
}
logger_init(&local_options, progname());
if (verbose)
logger_set_verbose();
@@ -653,8 +654,8 @@ witness_monitor(void)
* Update the repl_nodes table from the new master to reflect the changed
* node configuration
*
* It would be neat to be able to handle this with e.g. table-based
* logical replication if available in core
* XXX it would be neat to be able to handle this with e.g. table-based
* logical replication
*/
witness_copy_node_records(master_conn, my_local_conn, local_options.cluster_name);
@@ -709,46 +710,26 @@ witness_monitor(void)
return;
}
strncpy(monitor_witness_timestamp, PQgetvalue(res, 0, 0), MAXLEN);
strcpy(monitor_witness_timestamp, PQgetvalue(res, 0, 0));
PQclear(res);
/*
* Build the SQL to execute on master
*/
if (server_version_num >= 100000)
{
sqlquery_snprintf(sqlquery,
"INSERT INTO %s.repl_monitor "
" (primary_node, standby_node, "
" last_monitor_time, last_apply_time, "
" last_wal_primary_location, last_wal_standby_location, "
" replication_lag, apply_lag )"
" VALUES(%d, %d, "
" '%s'::TIMESTAMP WITH TIME ZONE, NULL, "
" pg_catalog.pg_current_wal_lsn(), NULL, "
" 0, 0) ",
get_repmgr_schema_quoted(my_local_conn),
master_options.node,
local_options.node,
monitor_witness_timestamp);
}
else
{
sqlquery_snprintf(sqlquery,
"INSERT INTO %s.repl_monitor "
" (primary_node, standby_node, "
" last_monitor_time, last_apply_time, "
" last_wal_primary_location, last_wal_standby_location, "
" replication_lag, apply_lag )"
" VALUES(%d, %d, "
" '%s'::TIMESTAMP WITH TIME ZONE, NULL, "
" pg_catalog.pg_current_xlog_location(), NULL, "
" 0, 0) ",
get_repmgr_schema_quoted(my_local_conn),
master_options.node,
local_options.node,
monitor_witness_timestamp);
}
sqlquery_snprintf(sqlquery,
"INSERT INTO %s.repl_monitor "
" (primary_node, standby_node, "
" last_monitor_time, last_apply_time, "
" last_wal_primary_location, last_wal_standby_location, "
" replication_lag, apply_lag )"
" VALUES(%d, %d, "
" '%s'::TIMESTAMP WITH TIME ZONE, NULL, "
" pg_catalog.pg_current_xlog_location(), NULL, "
" 0, 0) ",
get_repmgr_schema_quoted(my_local_conn),
master_options.node,
local_options.node,
monitor_witness_timestamp);
/*
* Execute the query asynchronously, but don't check for a result. We will
@@ -793,6 +774,7 @@ standby_monitor(void)
PGconn *upstream_conn;
char upstream_conninfo[MAXCONNINFO];
int upstream_node_id;
t_node_info upstream_node;
int active_master_id;
const char *upstream_node_type = NULL;
@@ -974,8 +956,6 @@ standby_monitor(void)
* Failover handling is handled differently depending on whether
* the failed node is the master or a cascading standby
*/
t_node_info upstream_node;
upstream_node = get_node_info(my_local_conn, local_options.cluster_name, upstream_node_id);
if (upstream_node.type == MASTER)
@@ -1033,8 +1013,8 @@ standby_monitor(void)
*
* We should log a message so the user knows of the situation at hand.
*
* XXX check if the original master is still active and display a warning
* XXX add event notification
* XXX check if the original master is still active and display a
* warning
*/
log_err(_("It seems this server was promoted manually (not by repmgr) so you might by in the presence of a split-brain.\n"));
log_err(_("Check your cluster and manually fix any anomaly.\n"));
@@ -1079,6 +1059,9 @@ standby_monitor(void)
* from the upstream node to write monitoring information
*/
/* XXX not used? */
upstream_node = get_node_info(my_local_conn, local_options.cluster_name, upstream_node_id);
sprintf(sqlquery,
"SELECT id "
" FROM %s.repl_nodes "
@@ -1136,42 +1119,21 @@ standby_monitor(void)
* If receive_location is less than replay location, we were streaming WAL but are
* somehow disconnected and evidently in archive recovery
*/
sqlquery_snprintf(sqlquery,
" SELECT ts, "
" CASE WHEN (receive_location IS NULL OR receive_location < replay_location) "
" THEN replay_location "
" ELSE receive_location"
" END AS receive_location,"
" replay_location, "
" replay_timestamp, "
" COALESCE(receive_location, '0/0') >= replay_location AS receiving_streamed_wal "
" FROM (SELECT CURRENT_TIMESTAMP AS ts, "
" pg_catalog.pg_last_xlog_receive_location() AS receive_location, "
" pg_catalog.pg_last_xlog_replay_location() AS replay_location, "
" pg_catalog.pg_last_xact_replay_timestamp() AS replay_timestamp "
" ) q ");
if (server_version_num >= 100000)
{
sqlquery_snprintf(sqlquery,
" SELECT ts, "
" CASE WHEN (receive_location IS NULL OR receive_location < replay_location) "
" THEN replay_location "
" ELSE receive_location"
" END AS receive_location,"
" replay_location, "
" replay_timestamp, "
" COALESCE(receive_location, '0/0') >= replay_location AS receiving_streamed_wal "
" FROM (SELECT CURRENT_TIMESTAMP AS ts, "
" pg_catalog.pg_last_wal_receive_lsn() AS receive_location, "
" pg_catalog.pg_last_wal_replay_lsn() AS replay_location, "
" pg_catalog.pg_last_xact_replay_timestamp() AS replay_timestamp "
" ) q ");
}
else
{
sqlquery_snprintf(sqlquery,
" SELECT ts, "
" CASE WHEN (receive_location IS NULL OR receive_location < replay_location) "
" THEN replay_location "
" ELSE receive_location"
" END AS receive_location,"
" replay_location, "
" replay_timestamp, "
" COALESCE(receive_location, '0/0') >= replay_location AS receiving_streamed_wal "
" FROM (SELECT CURRENT_TIMESTAMP AS ts, "
" pg_catalog.pg_last_xlog_receive_location() AS receive_location, "
" pg_catalog.pg_last_xlog_replay_location() AS replay_location, "
" pg_catalog.pg_last_xact_replay_timestamp() AS replay_timestamp "
" ) q ");
}
res = PQexec(my_local_conn, sqlquery);
@@ -1183,9 +1145,9 @@ standby_monitor(void)
return;
}
strncpy(monitor_standby_timestamp, PQgetvalue(res, 0, 0), MAXLEN);
strncpy(monitor_standby_timestamp, PQgetvalue(res, 0, 0), MAXLEN);
strncpy(last_xlog_receive_location, PQgetvalue(res, 0, 1), MAXLEN);
strncpy(last_xlog_replay_location, PQgetvalue(res, 0, 2), MAXLEN);
strncpy(last_xlog_replay_location, PQgetvalue(res, 0, 2), MAXLEN);
strncpy(last_xact_replay_timestamp, PQgetvalue(res, 0, 3), MAXLEN);
receiving_streamed_wal = (strcmp(PQgetvalue(res, 0, 4), "t") == 0)
@@ -1205,11 +1167,7 @@ standby_monitor(void)
* TODO: investigate whether pg_current_xlog_insert_location() would be a better
* choice; see: https://github.com/2ndQuadrant/repmgr/issues/189
*/
if (server_version_num >= 100000)
sqlquery_snprintf(sqlquery, "SELECT pg_catalog.pg_current_wal_lsn()");
else
sqlquery_snprintf(sqlquery, "SELECT pg_catalog.pg_current_xlog_location()");
sqlquery_snprintf(sqlquery, "SELECT pg_catalog.pg_current_xlog_location()");
res = PQexec(master_conn, sqlquery);
if (PQresultStatus(res) != PGRES_TUPLES_OK)
@@ -1223,22 +1181,10 @@ standby_monitor(void)
PQclear(res);
lsn_master_current_xlog_location = lsn_to_xlogrecptr(last_wal_primary_location, NULL);
lsn_last_xlog_receive_location = lsn_to_xlogrecptr(last_xlog_receive_location, NULL);
lsn_last_xlog_replay_location = lsn_to_xlogrecptr(last_xlog_replay_location, NULL);
lsn_last_xlog_receive_location = lsn_to_xlogrecptr(last_xlog_receive_location, NULL);
if (lsn_last_xlog_receive_location >= lsn_last_xlog_replay_location)
{
apply_lag = (long long unsigned int)lsn_last_xlog_receive_location - lsn_last_xlog_replay_location;
}
else
{
/* This should never happen, but in case it does set apply lag to zero */
log_warning("Standby receive (%s) location appears less than standby replay location (%s)\n",
last_xlog_receive_location,
last_xlog_replay_location);
apply_lag = 0;
}
apply_lag = (long long unsigned int)lsn_last_xlog_receive_location - lsn_last_xlog_replay_location;
/* Calculate replication lag */
if (lsn_master_current_xlog_location >= lsn_last_xlog_receive_location)
@@ -1247,7 +1193,7 @@ standby_monitor(void)
}
else
{
/* This should never happen, but in case it does set replication lag to zero */
/* This should never happen, but in case it does set lag to zero */
log_warning("Master xlog (%s) location appears less than standby receive location (%s)\n",
last_wal_primary_location,
last_xlog_receive_location);
@@ -1292,23 +1238,8 @@ standby_monitor(void)
log_verbose(LOG_DEBUG, "standby_monitor:() %s\n", sqlquery);
if (PQsendQuery(master_conn, sqlquery) == 0)
{
log_warning(_("query could not be sent to master: %s\n"),
log_warning(_("query could not be sent to master. %s\n"),
PQerrorMessage(master_conn));
}
else
{
sqlquery_snprintf(sqlquery,
"SELECT %s.repmgr_update_last_updated();",
get_repmgr_schema_quoted(my_local_conn));
res = PQexec(my_local_conn, sqlquery);
/* not critical if the above query fails*/
if (PQresultStatus(res) != PGRES_TUPLES_OK)
log_warning(_("unable to set last_updated: %s\n"), PQerrorMessage(my_local_conn));
PQclear(res);
}
}
@@ -1500,11 +1431,7 @@ do_master_failover(void)
terminate(ERR_FAILOVER_FAIL);
}
if (server_version_num >= 100000)
sqlquery_snprintf(sqlquery, "SELECT pg_catalog.pg_last_wal_receive_lsn()");
else
sqlquery_snprintf(sqlquery, "SELECT pg_catalog.pg_last_xlog_receive_location()");
sqlquery_snprintf(sqlquery, "SELECT pg_catalog.pg_last_xlog_receive_location()");
res = PQexec(node_conn, sqlquery);
if (PQresultStatus(res) != PGRES_TUPLES_OK)
{
@@ -1536,12 +1463,7 @@ do_master_failover(void)
}
/* last we get info about this node, and update shared memory */
if (server_version_num >= 100000)
sprintf(sqlquery, "SELECT pg_catalog.pg_last_wal_receive_lsn()");
else
sprintf(sqlquery, "SELECT pg_catalog.pg_last_xlog_receive_location()");
sprintf(sqlquery, "SELECT pg_catalog.pg_last_xlog_receive_location()");
res = PQexec(my_local_conn, sqlquery);
if (PQresultStatus(res) != PGRES_TUPLES_OK)
{
@@ -1591,6 +1513,7 @@ do_master_failover(void)
*/
if (PQstatus(node_conn) != CONNECTION_OK)
{
/* XXX */
log_info(_("At this point, it could be some race conditions "
"that are acceptable, assume the node is restarting "
"and starting failover procedure\n"));
@@ -2163,21 +2086,18 @@ check_connection(PGconn **conn, const char *type, const char *conninfo)
/*
* set_local_node_status()
*
* Attempt to connect to the current master server (as stored in the global
* variable `master_conn`) and set the local node's status to the result
* of `is_standby(my_local_conn)`. Normally this will be used to mark
* a node as failed, but in some circumstances we may be marking it
* as recovered.
* If failure of the local node is detected, attempt to connect
* to the current master server (as stored in the global variable
* `master_conn`) and update its record to failed.
*/
static bool
set_local_node_status(void)
{
PGresult *res;
PGresult *res;
char sqlquery[QUERY_STR_LEN];
int active_master_node_id = NODE_NOT_FOUND;
int active_master_node_id = NODE_NOT_FOUND;
char master_conninfo[MAXLEN];
bool local_node_status;
if (!check_connection(&master_conn, "master", NULL))
{
@@ -2236,29 +2156,24 @@ set_local_node_status(void)
/*
* Attempt to set the active record to the correct value.
* First
*/
local_node_status = (is_standby(my_local_conn) == 1);
if (!update_node_record_status(master_conn,
local_options.cluster_name,
node_info.node_id,
"standby",
node_info.upstream_node_id,
local_node_status))
is_standby(my_local_conn)==1))
{
log_err(_("unable to set local node %i as %s on master: %s\n"),
log_err(_("unable to set local node %i as inactive on master: %s\n"),
node_info.node_id,
local_node_status == false ? "inactive" : "active",
PQerrorMessage(master_conn));
return false;
}
log_notice(_("marking this node (%i) as %s on master\n"),
node_info.node_id,
local_node_status == false ? "inactive" : "active");
log_notice(_("marking this node (%i) as inactive on master\n"), node_info.node_id);
return true;
}
@@ -2399,13 +2314,13 @@ lsn_to_xlogrecptr(char *lsn, bool *format_ok)
if (format_ok != NULL)
*format_ok = true;
return (XLogRecPtr) ((uint64) xlogid) << 32 | (uint64) xrecoff;
return (((XLogRecPtr) xlogid * 16 * 1024 * 1024 * 255) + xrecoff);
}
void
usage(void)
{
log_err(_("%s: replication management daemon for PostgreSQL\n"), progname());
log_err(_("%s: Replicator manager daemon \n"), progname());
log_err(_("Try \"%s --help\" for more information.\n"), progname());
}

View File

@@ -1,7 +1,7 @@
#
# Makefile
#
# Copyright (c) 2ndQuadrant, 2010-2017
# Copyright (c) 2ndQuadrant, 2010-2016
#
MODULE_big = repmgr_funcs

View File

@@ -1,6 +1,6 @@
/*
* repmgr_function.sql
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (c) 2ndQuadrant, 2010-2016
*
*/

View File

@@ -1,4 +0,0 @@
select * from repmgr_update_standby_location('');
select * from repmgr_get_last_standby_location();
select * from repmgr_update_last_updated();
select * from repmgr_get_last_updated();

View File

@@ -1,6 +1,6 @@
/*
* uninstall_repmgr_funcs.sql
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (c) 2ndQuadrant, 2010-2016
*
*/

View File

@@ -1,7 +1,7 @@
/*
* strutil.c
*
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (C) 2ndQuadrant, 2010-2016
*
* 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
@@ -90,18 +90,31 @@ maxlen_snprintf(char *str, const char *format,...)
/*
* Escape a string for use as a parameter in recovery.conf
* Caller must free returned value
* Adapted from: src/fe_utils/string_utils.c
*
* Function not publicly available before PostgreSQL 9.6.
*/
char *
escape_recovery_conf_value(const char *src)
void
appendShellString(PQExpBuffer buf, const char *str)
{
char *result = escape_single_quotes_ascii(src);
const char *p;
if (!result)
appendPQExpBufferChar(buf, '\'');
for (p = str; *p; p++)
{
fprintf(stderr, _("%s: out of memory\n"), progname());
exit(ERR_INTERNAL);
if (*p == '\n' || *p == '\r')
{
fprintf(stderr,
_("shell command argument contains a newline or carriage return: \"%s\"\n"),
str);
exit(ERR_BAD_CONFIG);
}
if (*p == '\'')
appendPQExpBufferStr(buf, "'\"'\"'");
else
appendPQExpBufferChar(buf, *p);
}
return result;
appendPQExpBufferChar(buf, '\'');
}

View File

@@ -1,6 +1,6 @@
/*
* strutil.h
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (C) 2ndQuadrant, 2010-2016
*
*
* This program is free software: you can redistribute it and/or modify
@@ -49,6 +49,6 @@ extern int
maxlen_snprintf(char *str, const char *format,...)
__attribute__((format(PG_PRINTF_ATTRIBUTE, 2, 3)));
extern char *
escape_recovery_conf_value(const char *src);
extern void
appendShellString(PQExpBuffer buf, const char *str);
#endif /* _STRUTIL_H_ */

View File

@@ -1,7 +1,7 @@
/*
* uninstall_repmgr.sql
*
* Copyright (c) 2ndQuadrant, 2010-2017
* Copyright (C) 2ndQuadrant, 2010-2016
*
*/

View File

@@ -1,6 +1,6 @@
#ifndef _VERSION_H_
#define _VERSION_H_
#define REPMGR_VERSION "3.3.2"
#define REPMGR_VERSION "3.2.1"
#endif