Re: Guidance Needed for PostgreSQL Upgrade from 12 to 15 - Mailing list pgsql-admin

Thanks Ron for your suggestion.

So for pg upgrade in streaming replication setup, rsync will be a better option for standby upgrade if we are using --link option or recreating the standby, once upgrade completes on primary? Any suggestions on this please.

Best Regards,

Raman

On Mon, Nov 18, 2024, 22:41 Ron Johnson <ronljohnsonjr@gmail.com> wrote:

On Mon, Nov 18, 2024 at 11:08 AM Motog Plus <mplus7535@gmail.com> wrote:

Dear Team,

We are in the process of upgrading our PostgreSQL database from version 12 to version 15. I would greatly appreciate your advice on the following:

1. Would it be recommended to use the --link option with the pg_upgrade command, from disk space point of view?

Yes.

 

Are there any potential downsides to consider?

Very much: it's a one-way journey.  No rolling back if something goes wrong!

 

2. Do you have any suggestions or best practices for performing an efficient upgrade in a replication setup (streaming replication) for both the primary and standby servers?

Streaming replication is not an upgrade method.  Logical replication is absolutely a valid method of upgrading PG on one server to PG on a different server.

 

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