Re: Documentation/Cleanup Command for Hot Standby

On 3/11/10 5:19 AM, Chander Ganesan wrote:
> Hi,
>
> I've been reviewing HS/SR and have a couple of thoughts/notes:
>
> - The recovery_done_command is not documented (that I can find, at
> least) in the documentation.
> - There is (presently) no way to have PostgreSQL's standby node "clean
> up" unneeded WAL files (the %r parameter for archive_command).  I saw
> some talk about adding a 'archive_cleanup_command' to recovery.conf, but
> that doesn't seem to work (yet).  I think this should be listed as a
> to-do item on the wiki for this application (or if it was added after
> the alpha4 release, noted as a completed item.)  Without a way to
> cleanup archives, the wal archive could end up getting very large, and
> even fill up the file system it is on...

Yes, a lot of this is going to be very manual for 9.0.  I'm working on
documentation on how you can decide what to delete via cron job.

--Josh Berkus