The postgresql-?.?.?/contrib/linux/postgres.init is meant to start your
postmaster at boot time and stop it at halt/reboot. Excelent.
But it is made for postgres account running tcsh. I know nothing about tchs
and my postgres account defaults to bash. So (thanks to Steve "Stevers!"
Coile) I changed it to bash:
-----------------------------------------------------
if [ ${USE_SYSLOG} = "yes" ]; then
su - ${PGACCOUNT} -c "(${POSTMASTER} ${PGOPTS} 2>&1 | logger -p
${FACILITY}.notice) &" > /dev/null 2>&1 &
else
su - ${PGACCOUNT} -c "${POSTMASTER} ${PGOPTS} 2>>&1 ${PGLOGFILE} &" >
/dev/null 2>&1 &
fi
-----------------------------------------------------
cool, but there was another problem. The script wouldn't stop the postmaster
at halt/reboot while it worked just fine if manually invoked. (RedHat 5.0
sysV init)
Meanwhile I leafed some shell programming book and things cleared up a bit.
In the /etc/rc.d/rc file (the one to start/stop services), the 'stop'
branch, there is a section meant to check if subsystems are up.
-----------------------------------------------------
# Check if the subsystem is already up.
subsys=${i#/etc/rc.d/rc$runlevel.d/K??}
[ ! -f /var/lock/subsys/$subsys ] && \
[ ! -f /var/lock/subsys/${subsys}.init ] && continue
-----------------------------------------------------
That's it, if there's no file named exactly after the symlink (without K??)
in /var/lock/subsys, then it decides the subsystem is not up and gracefully
exits.
If you look in /etc/rc.d/init.d/postgres.init (copy of
postgresql-?.?.?/contrib/linux/postgres.init), you'll find:
-----------------------------------------------------
# touch /var/lock/subsys/${POSTMASTER}
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which is equally commented and wrong for that kind of init. It should be:
-----------------------------------------------------
# use the name of the symlink without [KS]??
touch /var/lock/subsys/postgres
-----------------------------------------------------
I use:
K05postgres -> /etc/rc.d/init.d/postgres.init on runlevel 1
K05postgres -> /etc/rc.d/init.d/postgres.init on runlevel 6
S98postgres -> /etc/rc.d/init.d/postgres.init on runlevel 3
Claudiu
