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doc: note importance of installing same repmgr versions

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Ian Barwick
2019-01-07 12:18:17 +09:00
parent 5886772cdb
commit 1a82eecdb6
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14
doc/install-requirements.sgml
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@@ -36,6 +36,20 @@
major version.
</para>
<note>
<simpara>
The same &quot;major&quot; &repmgr; version (e.g. <literal>4.2.x</literal>) <emphasis>must</emphasis>
be installed on all node in the replication cluster. We strongly recommend keeping all
nodes on the same (preferably latest) &quot;minor&quot; &repmgr; version to minimize the risk
of incompatibilities.
</simpara>
<simpara>
If different &quot;major&quot; &repmgr; versions (e.g. 3.3.x and 4.1.x)
are installed on different nodes, in the best case &repmgr; (in particular <application>repmgrd</application>)
will not run. In the worst case, you will end up with a broken cluster.
</simpara>
</note>
<para>
A dedicated system user for &repmgr; is <emphasis>not</emphasis> required; as many &repmgr; and
<application>repmgrd</application> actions require direct access to the PostgreSQL data directory,