A while back, I wrote this:
http://www.sitening.com/auto_pg_autovacuum
While not exactly an init script, it sanely avoids multiply starting
pg_autovacuum.
Then I did this:
http://www.sitening.com/pgautovacuum
which is a proper init script.
Thanks for prompting me to post it! Now there are some options!
But I'm hopeful that autovacuum will be integrated into 8.1, thereby
laying this issue to rest.
-tfo
--
Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
Strategic Open Source: Open Your i™
http://www.sitening.com/
110 30th Avenue North, Suite 6
Nashville, TN 37203-6320
615-260-0005
On Apr 10, 2005, at 10:19 PM, Theo Galanakis wrote:
Since I could not locate anything similar on the net, I have written a
script to automatically start and stop the autovacuum daemon. This
should be added to the existing postgresql script.
Please let me know if you can see any shortcomings. I have taken into
consideration that more than one postmaster may be running on the same
machine, so I have stored the pg_autovacuum pid into a file, which is
referenced when bringing down the postmaster instance. I have not gone
to the effort of including all the pg_autovacuum parameters, you can
add them at will.
One issue I can foresee is maintainability, where you will have to
update the postgresql script file with the snippets below, every
postgres upgrade.
Here are the snippets :
This goes where all the other init scripts are located.
# Initialize pg_autovacuum defaults. Theo Galanakis 11/04/2005
PGAUTO_LOGFILE=/var/lib/pg_autovacuum.log
PGAUTO_SLEEP=60
Added to the end of the Start function.
# Start pg_autovacuum. Theo Galanakis 11/05/2005
PAUTO_START=$"Starting pg_autovacuum service: "
echo -n "$PAUTO_START"
pg_autovacuum -D -s ${PGAUTO_SLEEP} -p ${PGPORT} -U postgres
-L ${PGAUTO_LOGFILE}
pg_autovacuum_pid=`pidof -s $PGENGINE/pg_autovacuum`
if [ $pg_autovacuum_pid ]
then
success "$PAUTO_START"
echo $pg_autovacuum_pid >
/var/run/pg_autovacuum.${PGPORT}.pid
echo
else
failure "$PAUTO_START"
echo
fi
Added to the end of the Stop function.
# Stop pg_autovaccum. Theo Galanakis 11/04/2005
echo -n $"Stopping pg_autovacuum service: "
pg_autovacuum_pid=`head -n 1
/var/run/pg_autovacuum.${PGPORT}.pid`
kill -TERM $pg_autovacuum_pid
ret=`ps --no-heading ${pg_autovacuum_pid}`
if [ -z "$ret" ]
then
echo_success
else
echo_failure
fi
echo
rm -f /var/run/pg_autovacuum.${PGPORT}.pid
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