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standby follow: check node has connect to new primary

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After restarting the standby, poll pg_stat_replication on the upstream
until the standby connects, and exit with an error if it doesn't by the
timeout defined in "standby_follow_timeout".

Implments GitHub #444.
This commit is contained in:
Ian Barwick
2018-06-07 14:38:15 +09:00
parent 20ce53e2d2
commit 68a9745e7e
6 changed files with 109 additions and 24 deletions
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16
doc/repmgr-standby-follow.sgml
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@@ -26,10 +26,18 @@
running. It can only be used to attach an active standby to the current primary node
(and not to another standby).
</para>
<para>
To re-add an inactive node to the replication cluster, see
<xref linkend="repmgr-node-rejoin">
</para>
<tip>
<para>
To re-add an inactive node to the replication cluster, use
<xref linkend="repmgr-node-rejoin">.
</para>
</tip>
<para>
<command>repmgr standby follow</command> will wait up to
<varname>standby_follow_timeout</varname> seconds (default: <literal>30</literal>)
to verify the standby has actually connected to the new primary.
</para>
</refsect1>