Re: Logging the starting and stopping of PostgreSQL

From: "Campbell, Lance" <lance(at)uiuc(dot)edu>
To: "Chander Ganesan" <chander(at)otg-nc(dot)com>
Cc: <pgsql-admin(at)postgresql(dot)org>
Subject: Re: Logging the starting and stopping of PostgreSQL
Date: 2007-08-24 16:27:48
Message-ID: B10E6810AC2A2F4EA7550D072CDE8760197D37@SAB-FENWICK.sab.uiuc.edu
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Ganesan,

Thanks so much. I never read about that directory.

Thanks,

Lance Campbell

Project Manager/Software Architect

Web Services at Public Affairs

University of Illinois

217.333.0382

http://webservices.uiuc.edu

________________________________

From: Chander Ganesan [mailto:chander(at)otg-nc(dot)com]
Sent: Thursday, August 23, 2007 5:00 PM
To: Campbell, Lance
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: [ADMIN] Logging the starting and stopping of PostgreSQL

Campbell, Lance wrote:

I have a script that starts PostgreSQL as a service. It uses the
following command to start the database:

$SU -l postgres -c "$PGENGINE/postmaster -p '$PGPORT' -D '$PGDATA'
${PGOPTS} &" >> "$PGLOG" 2>&1 < /dev/null

You do know that there is a pre-built startup script in the
contrib/start-scripts directory? You might try using that rather than
reinventing the wheel in a variety of ways...

On my production server I use a slightly different command:

exec ${PGENGINE}/pg_ctl start -D ${PGDATA} -l ${PGLOG}

I noticed that the first command sends starting up info about PostgreSQL
to the log file specified by $PGLOG; while the second startup command
does not send anything to the log file. What is the reason for this? I
also have the same issue with shutting down.

It looks like in your first startup script you redirect the output so
the startup script is created by the user "root" (and hence owned by
root). In the second one, you start as postgres (or whomever your
server runs as), and as a result the log file would have to be owned by
that user as well. Is it? I'm assuming that (by your text above) that
the file already exists but no new output appears there - this may be
because the file is owned by the root user. You should probably change
the ownership of the file so that the postgresql user can write to it.

hope that helps.

--
Chander Ganesan
The Open Technology Group
One Copley Parkway, Suite 210
Morrisville, NC 27560
Phone: 877-258-8987/919-463-0999
http://www.otg-nc.com
Expert PostgreSQL Training

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