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Author SHA1 Message Date
Israel Barth Rubio
7a84e34630 Bump version number
5.4.1

Signed-off-by: Israel Barth Rubio <israel.barth@enterprisedb.com>
2023-07-04 08:41:22 -03:00
Ian Barwick
9ab4acea78 repmgrd: ensure witness node metadata is updated
If the primary changed while the witness repmgrd was not running,
ensure the witness's upstream node ID is updated when the witness
repmgrd is restarted.
2023-06-08 16:39:52 +09:00
Martín Marqués
ef962436f7 Add release notes for repmgr release 5.4.0
This release added support for pg-backup-api. Here we add the
release notes which expose the new feature.

Signed-off-by: Martín Marqués <martin.marques@enterprisedb.com>
2023-03-24 18:34:53 +00:00
Martín Marqués
9a68206b4a Various improvements and fixes to the pg-backup-api restore section on the docs
I added a paragraph at the beginning of the section on where to look for
instructions on how to install the pg-backup-api rest API.

Fixed typos and some gramatical changes. Also reworded the first paragraph
(which is now the second one).

Signed-off-by: Martín Marqués <martin.marques@enterprisedb.com>
2023-03-24 18:25:27 +00:00
Martín Marqués
31af938354 New sect2 block has to be inside the sect1. The closing tag has to go at the end.
Signed-off-by: Martín Marqués <martin.marques@enterprisedb.com>
2023-03-24 18:25:12 +00:00
Mario Gonzalez
061025b62f Adding new mode to clone standbys.
repmgr v5.4.0 supports this new mode called `pg_backupapi` which is
enabled by defining `pg_backupapi_host` in repmgr.conf.
2023-03-24 18:24:56 +00:00
6 changed files with 162 additions and 6 deletions

View File

@@ -1,3 +1,9 @@
5.4.1 2023-??-??
repmgrd: ensure witness node metadata is updated (Ian)
5.4.0 2023-03-16
Support cloning replicas using pg-backup-api
5.3.3 2022-10-17
Support for PostgreSQL added
repmgrd: ensure event notification script is called for event

View File

@@ -1,8 +1,8 @@
AC_INIT([repmgr], [5.4.0], [repmgr@googlegroups.com], [repmgr], [https://repmgr.org/])
AC_INIT([repmgr],[5.4.1],[repmgr@googlegroups.com],[repmgr],[https://repmgr.org/])
AC_COPYRIGHT([Copyright (c) 2010-2021, EnterpriseDB Corporation])
AC_CONFIG_HEADER(config.h)
AC_CONFIG_HEADERS([config.h])
AC_ARG_VAR([PG_CONFIG], [Location to find pg_config for target PostgreSQL (default PATH)])

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@@ -16,8 +16,44 @@
</para>
<!-- remember to update the release date in ../repmgr_version.h.in -->
<sect1 id="release-5.4.1">
<title id="release-current">Release 5.4.1</title>
<para><emphasis>??? ?? ??????, 202?</emphasis></para>
<para>
&repmgr; 5.4.1 is a minor release providing ...
</para>
<sect2>
<title>Bug fixes</title>
<para>
<itemizedlist>
<listitem>
<para>
&repmgrd;: ensure witness node metadata is updated if the primary
node changed while the witness &repmgrd; was not running.
</para>
</listitem>
</itemizedlist>
</para>
</sect2>
</sect1>
<sect1 id="release-5.4.0">
<title>Release 5.4.0</title>
<para><emphasis>Thu 15 March, 2023</emphasis></para>
<para>
&repmgr; 5.4.0 is a major release.
</para>
<para>
This release provides support for cloning standbys using backups taken with <ulink url="http://www.pgbarman.org">barman</ulink>
with the use of <ulink url="https://github.com/EnterpriseDB/pg-backup-api">pg-backup-api</ulink>.
</para>
<para>
Minor fixes to the documentation.
</para>
</sect1>
<sect1 id="release-5.3.3">
<title id="release-current">Release 5.3.3</title>
<title>Release 5.3.3</title>
<para><emphasis>Mon 17 October, 2022</emphasis></para>
<para>
&repmgr; 5.3.3 is a minor release providing support for

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@@ -225,6 +225,109 @@ description = "Main cluster"
</note>
</sect2>
<sect2 id="cloning-from-barman-pg_backupapi-mode" xreflabel="Using Barman through its API (pg-backup-api)">
<title>Using Barman through its API (pg-backup-api)</title>
<indexterm>
<primary>cloning</primary>
<secondary>pg-backup-api</secondary>
</indexterm>
<para>
You can find information on how to install and setup pg-backup-api in
<ulink url="https://www.enterprisedb.com/docs/supported-open-source/barman/pg-backup-api/">the pg-backup-api
documentation</ulink>.
</para>
<para>
This mode (`pg-backupapi`) was introduced in v5.4.0 as a way to further integrate with Barman letting Barman
handle the restore. This also reduces the ssh keys that need to share between the backup and postgres nodes.
As long as you have access to the API service by HTTP calls, you could perform recoveries right away.
You just need to instruct Barman through the API which backup you need and on which node the backup needs to
to be restored on.
</para>
<para>
In order to enable <literal>pg_backupapi mode</literal> support for <command>repmgr standby clone</command>,
you need the following lines in repmgr.conf:
<itemizedlist spacing="compact" mark="bullet">
<listitem><para>pg_backupapi_host: Where pg-backup-api is hosted</para></listitem>
<listitem><para>pg_backupapi_node_name: Name of the server as understood by Barman</para></listitem>
<listitem><para>pg_backupapi_remote_ssh_command: How Barman will be connecting as to the node</para></listitem>
<listitem><para>pg_backupapi_backup_id: ID of the existing backup you need to restore</para></listitem>
</itemizedlist>
This is an example of how repmgr.conf would look like:
<programlisting>
pg_backupapi_host = '192.168.122.154'
pg_backupapi_node_name = 'burrito'
pg_backupapi_remote_ssh_command = 'ssh john_doe@192.168.122.1'
pg_backupapi_backup_id = '20230223T093201'
</programlisting>
</para>
<para>
<literal>pg_backupapi_host</literal> is the variable name that enables this mode, and when you set it,
all the rest of the above variables are required. Also, remember that this service is just an interface
between Barman and repmgr, hence if something fails during a recovery, you should check Barman's logs upon
why the process couldn't finish properly.
</para>
<note>
<simpara>
Despite in Barman you can define shortcuts like "lastest" or "oldest", they are not supported for the
time being in pg-backup-api. These shortcuts will be supported in a future release.
</simpara>
</note>
<para>
This is a real example of repmgr's output cloning with the API. Note that during this operation, we stopped
the service for a little while and repmgr had to retry but that doesn't affect the final outcome. The primary
is listening on localhost's port 6001:
<programlisting>
$ repmgr -f ~/nodes/node_3/repmgr.conf standby clone -U repmgr -p 6001 -h localhost
NOTICE: destination directory "/home/mario/nodes/node_3/data" provided
INFO: Attempting to use `pg_backupapi` new restore mode
INFO: connecting to source node
DETAIL: connection string is: user=repmgr port=6001 host=localhost
DETAIL: current installation size is 8541 MB
DEBUG: 1 node records returned by source node
DEBUG: connecting to: "user=repmgr dbname=repmgr host=localhost port=6001 connect_timeout=2 fallback_application_name=repmgr options=-csearch_path="
DEBUG: upstream_node_id determined as 1
INFO: Attempting to use `pg_backupapi` new restore mode
INFO: replication slot usage not requested; no replication slot will be set up for this standby
NOTICE: starting backup (using pg_backupapi)...
INFO: Success creating the task: operation id '20230309T150647'
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
Incorrect reply received for that operation ID.
INFO: Retrying...
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status IN_PROGRESS
INFO: status DONE
NOTICE: standby clone (from pg_backupapi) complete
NOTICE: you can now start your PostgreSQL server
HINT: for example: pg_ctl -D /home/mario/nodes/node_3/data start
HINT: after starting the server, you need to register this standby with "repmgr standby register"
</programlisting>
</para>
</sect2> <!--END cloning-from-barman-pg_backupapi-mode !-->
</sect1>
<sect1 id="cloning-replication-slots" xreflabel="Cloning and replication slots">

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@@ -1,7 +1,7 @@
#define REPMGR_VERSION_DATE ""
#define REPMGR_VERSION "5.4dev"
#define REPMGR_VERSION_NUM 50400
#define REPMGR_VERSION "5.4.1"
#define REPMGR_VERSION_NUM 50401
#define REPMGR_EXTENSION_VERSION "5.4"
#define REPMGR_EXTENSION_NUM 50400
#define REPMGR_RELEASE_DATE "2022-XX-XX"
#define REPMGR_RELEASE_DATE "2023-07-04"
#define PG_ACTUAL_VERSION_NUM

View File

@@ -2394,6 +2394,17 @@ monitor_streaming_witness(void)
terminate(ERR_BAD_CONFIG);
}
/*
* It's possible that the primary changed while the witness repmgrd was not
* running. This does not affect the functionality of the witness repmgrd, but
* does mean outdated node metadata will be displayed, so update that.
*/
if (local_node_info.upstream_node_id != primary_node_id)
{
update_node_record_set_upstream(primary_conn, local_node_info.node_id, primary_node_id);
local_node_info.upstream_node_id = primary_node_id;
}
initPQExpBuffer(&event_details);
appendPQExpBuffer(&event_details,