Upgrade Failover Cluster - Mailing list pgsql-general
Hi All,
I’m fairly new to postgresql and I have a question concerning upgrading a 2 node failover physical replication cluster. I’m automating the cluster installation and maintenance by using Puppet. All runs good so far.
When it comes to an upgrade scenario, let’s say upgrading from rel. 16.x to 17.x, I’m unsure if it is required to upgrade primary first and then replica or if order doesn’t matter. I’ve read different statements in some articles on internet about it. One said it’s possible to upgrade replica first by using pg_upgrade or rebuilding replica from primary by pg_basebackup and others are telling me primary first.
What is the recommended/most stable path to upgrade a cluster? I would appreciate if you could shed some light on this? Thanks beforehand.
Regards,
Martin BUBACZ
Database Administrator (Oracle)
Global Intermediate Products Oracle
Global Service Operations
AXA Group Operations
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