February 2020
Intermediate to advanced
734 pages
38h 13m
English
Content preview from PostgreSQL 12 High Availability Cookbook - Third Edition
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Performing online maintenance and upgrades
Once repmgr is in charge of a fully online PostgreSQL cluster consisting of multiple nodes, we need to account for server maintenance. Whether we need to apply a security patch to PostgreSQL or replace server hardware, it is inevitable that we will perform at least one switchover over the lifetime of the cluster.
What else must we consider when performing maintenance on a PostgreSQL cluster managed by repmgr? What about upgrading repmgr itself? This recipe will answer those questions to round off the chapter.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.