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doc: clarify use-cases for pausing repmgrd

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Ian Barwick
2019-01-23 12:33:05 +09:00
parent c3d284e097
commit 07b79286b5
1 changed files with 12 additions and 3 deletions
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15
doc/repmgrd-pausing.sgml
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@@ -21,13 +21,14 @@
<para> <para>
However, <application>repmgrd</application> is unable to distinguish between However, <application>repmgrd</application> is unable to distinguish between
planned outages (such as performing a <link linkend="performing-switchover">switchover</link> planned outages (such as performing a <link linkend="performing-switchover">switchover</link>
or upgrading a server), and an actual server outage. In versions prior to &repmgr; 4.2 or installing PostgreSQL maintenance released), and an actual server outage. In versions prior to
it was necessary to stop <application>repmgrd</application> on all nodes (or at least &repmgr; 4.2 it was necessary to stop <application>repmgrd</application> on all nodes (or at least
on all nodes where <application>repmgrd</application> is on all nodes where <application>repmgrd</application> is
<link linkend="repmgrd-automatic-failover">configured for automatic failover</link>) <link linkend="repmgrd-automatic-failover">configured for automatic failover</link>)
to prevent <application>repmgrd</application> from making changes to the to prevent <application>repmgrd</application> from making unintentional changes to the
replication cluster. replication cluster.
</para> </para>
<para> <para>
From <link linkend="release-4.2">&repmgr; 4.2</link>, <application>repmgrd</application> From <link linkend="release-4.2">&repmgr; 4.2</link>, <application>repmgrd</application>
can now be &quot;paused&quot;, i.e. instructed not to take any action such as performing a failover. can now be &quot;paused&quot;, i.e. instructed not to take any action such as performing a failover.
@@ -35,6 +36,14 @@
each <application>repmgrd</application> individually. each <application>repmgrd</application> individually.
</para> </para>
<note>
<para>
For major PostgreSQL upgrades, e.g. from PostgreSQL 10 to PostgreSQL 11,
<application>repmgrd</application> should be shut down completely and only started up
once the &repmgr; packages for the new PostgreSQL major version have been installed.
</para>
</note>
<sect1 id="repmgrd-pausing-prerequisites"> <sect1 id="repmgrd-pausing-prerequisites">
<title>Prerequisites for pausing <application>repmgrd</application></title> <title>Prerequisites for pausing <application>repmgrd</application></title>
<para> <para>