Re: question about replication slots

Michael Paquier <michael(dot)paquier(at)gmail(dot)com> wrote:

> On Sat, Dec 5, 2015 at 2:35 AM, Andreas Kretschmer
> <andreas(at)a-kretschmer(dot)de> wrote:
> > imagine a streaming replication using physical replication slots. And sometime a
> > fail over. All okay. I take a basebackup and rebuild the old master as slave.
> >
> > Is there a risk that the new slave contains active replication slots but no
> > listener on it?
>
> Yes. This would retain WAL on the standby indefinitely if you are not careful.
>
> > What have i to consider?
>
> You had better remove the contents of pg_replslot/ in the backup
> taken. Even if you include them, there are high chances that those
> will be useless at the end.
>
> So, quoting the docs
> (http://www.postgresql.org/docs/devel/static/continuous-archiving.html)

Thx for the answer!

Andreas
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