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Provide fix for failing pg_rewind with non-superuser

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Issue #829 was opened indicating, with a reproducible, that repmgr
was not able to run `node rejoin` with minimal privileged user. The
main obstacle is that pg_rewind is not able to execute the rewind
operation if the user has REPLICATION privileges, but the user
repmgr uses requires REPLICATION. This is a typical catch22.

The solution provided here adds a --superuser, similar to what
other commands have, to `node rejoin`

AI-assisted development notes:

    The approach was designed and directed by Martín Marqués, who
    also reviewed and refined the output. Code was written by Claude
    (AI), with some additions from Martín in the documentation.

Fixes #829

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Martín Marqués <martin.marques@enterprisedb.com>
This commit is contained in:
Martín Marqués
2026-03-28 15:29:18 +01:00
parent e696e28f43
commit c9c380a022
5 changed files with 75 additions and 3 deletions
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3
doc/configuration-permissions.xml
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@@ -192,6 +192,9 @@
<listitem>
<simpara><link linkend="repmgr-node-service">repmgr node service</link> (to execute <command>CHECKPOINT</command> via the <option>--checkpoint</option>; note this is also called by <link linkend="repmgr-standby-switchover">repmgr standby switchover</link>)</simpara>
</listitem>
<listitem>
<simpara><link linkend="repmgr-node-rejoin">repmgr node rejoin</link> (to execute <command>repmgr node rejoin --force-rewind</command>)</simpara>
</listitem>
</itemizedlist>
</para>
</sect3>