Re: Upgrading hot standbys

On Wed, Apr 29, 2015 at 6:19 AM, Aaron Burnett <
Aaron(dot)Burnett(at)us(dot)dunnhumby(dot)com> wrote:

>
> Greetings,
>
>
> I'm in the process of upgrading PG 9.1.3 to 9.4.1 in the near future.
>
>
> I have several machines which each house unique databases. Each of those
> are replicated to a standby server with matching configurations. A total of
> 10 servers, 5 masters, 5 slaves. Everything runs on Ubuntu.
>
>
> My question, as I can't seem to find any documentation on this part, is
> once I successfully upgrade the master I will need to upgrade the standby
> as well. Will I have to rebuild the standby from scratch, or will the
> standby pick up where it was before the upgrade if I do things correctly?
>
>
>
You upgrade the master, and then you rebuild the standbys from a new
basebackup (using pg_basebackup or manually with start/stop backups etc).
You can't upgrade the standbys and have them re-join the master, they have
to be redone from scratch.

--
Magnus Hagander
Me: http://www.hagander.net/
Work: http://www.redpill-linpro.com/