I have upgraded from 9.5 to 14 using the -link option. It works fine.
I equally had streaming replication running on it.
I break(split brain) replication and upgrade the standby, once it done and everything is running smoothly, I then install version 14 to the old primary and just configure streaming on it and all now runs on 14.
On Mon, Feb 12, 2024 at 5:08 AM Dávid Suchan <david.suchan.ds@xxxxxxxxx> wrote:
Hi, I was wondering what is the safest pg_upgrade version upgrade distance going from 9.6 version. Do I need to go version by version or I can go from 9.6 to 15? We have a very huge database(TBs) with one replication server, so we will first run the pgupgrade on the main server and then rsync to a standby replica. I'm not sure whether it's safe to do it from 9.6 to 15 at once, I have tested the process on 9,6 to 10 yet. Would that be a wise approach to such an upgrade of the db?Also, when upgrading a very big database with replication where none of the data can be allowed to be lost, is the pgupgrade into rsync approach the best one? Thanks.
