Re: Questions on Upgrading PostgreSQL from 15.0 to 15.9 and Setting Up Streaming Replication

On Sun, Nov 24, 2024 at 11:52 AM Subhash Udata <subhashudata(at)gmail(dot)com>
wrote:

> I understand your point and appreciate the clarification.
>
> I have reviewed the references and now have a better understanding of the
> minor upgrade process.
>
> However, my concern lies in the fact that we are working with production
> servers, where downtime is not acceptable.
>
> Additionally, if a failover occurs due to a network issue or any other
> disaster, setting up replication again requires running the pg_basebackup
> command. For large databases, this process becomes a significant challenge,
> as running pg_basebackup for the entire cluster can be time-consuming and
> resource-intensive.
>

A comment and a question:
1) pg_basebackup runs just fine from cron. Thus, "time-consuming" (which
you described as 2-3 hours) isn't that critical.
2) What do you mean by resource-intensive? If it means network bandwidth,
then read the pg_basebackup man page.

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