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note that "standby follow" requires a primary to be available

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While it's technically possible to have a standby follow another
standby while the primary is not available, repmgr will not be able
to update its metadata, which will cause Confusion and Chaos.

Update the documentation to make this clear, and provide a more helpful
error message if this situation occurs. The operation previously
failed anyway, but with an unhelpful message about not being able to
find a node record.
This commit is contained in:
Ian Barwick
2019-06-11 15:14:17 +09:00
parent ae141b9d32
commit 915fb7d617
4 changed files with 66 additions and 41 deletions
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9
doc/appendix-release-notes.xml
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@@ -43,6 +43,14 @@
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-follow"><command>repmgr standby follow</command></link>:
note that an active, reachable cluster primary is required for this command;
and provide a more helpful error message if no reachable primary could be found.
</para>
</listitem>
<listitem>
<para>
&repmgr;: when executing <link linkend="repmgr-standby-switchover"><command>repmgr standby switchover</command></link>,
@@ -75,7 +83,6 @@
</para>
</listitem>
<listitem>
<para>
<link linkend="repmgr-standby-promote"><command>repmgr standby promote</command></link>: