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doc: update witness server notes

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- clarify that a separate PostgreSQL instance is needed for each
  witness server
- remove historical 3.x reference
This commit is contained in:
Ian Barwick
2022-03-16 10:26:47 +09:00
parent 197c87d13b
commit f7b9e11d6f
1 changed files with 9 additions and 5 deletions
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14
doc/repmgrd-automatic-failover.xml
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@@ -79,13 +79,17 @@
as otherwise if the primary server fails due to hardware issues, the witness as otherwise if the primary server fails due to hardware issues, the witness
server will be lost too. server will be lost too.
</para> </para>
<note> <important>
<simpara> <simpara>
&repmgr; 3.3 and earlier provided a <command>repmgr create witness</command> A PostgreSQL instance can only accommodate a single witness server.
command, which would automatically create a PostgreSQL instance. However
this often resulted in an unsatisfactory, hard-to-customise instance.
</simpara> </simpara>
</note> <simpara>
If you are planning to use a single server to support more than one
witness server, a separate PostgreSQL instance is required for each
witness server in use.
</simpara>
</important>
<para> <para>
The witness server should be configured in the same way as a normal The witness server should be configured in the same way as a normal
&repmgr; node; see section <xref linkend="configuration"/>. &repmgr; node; see section <xref linkend="configuration"/>.