Re: HOT Standby - slave does not appear to be removing wal files

From: olimaz <oliver(dot)mazariegos(at)gmail(dot)com>
To: pgsql-admin(at)postgresql(dot)org
Subject: Re: HOT Standby - slave does not appear to be removing wal files
Date: 2013-12-23 17:35:03
Message-ID: 1387820103987-5784441.post@n5.nabble.com
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I had the very same problem, and after checking postgres log file, found the
following warning every 5 minutes:

archive_cleanup_command "pg_archivecleanup /srv/postgresql/wals/ %r":
return code 32512

wich means the pg_archivecleanup script was not found.

The solution: edit the file /var/lib/postgresql/9.1/main/recovery.conf and
make sure it is set like this:

archive_cleanup_command = '/usr/lib/postgresql/9.1/bin/pg_archivecleanup
/srv/postgresql/wals/ %r'

(be careful: I keep my wal files in a special dir "/srv/postgresql/wals/"
yours will be a different location)

in my case, after 5 minutes, my 140 GB wal dir changed to just 2 files,
being one of them a .backup file. Before that, I did not had a .backup file
at all, so I could not make use of wal cleanup procedures.

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