Hello ! Server rebooted occasionally after power failure. And I have stale postmaster.pid file, so postmaster didn't start with error bill postgres[600]: [1-1] FATAL: file "postmaster.pid" already exists
I think startup script and/or pg_ctl have to be written to check if that process really exists
and it is postmaster, so DBMS server starts after any hard reboot.
I changed the startup script block
postgresql_command()
{
su -l ${postgresql_user} -c "exec ${command} ${command_args}
${rc_arg}"
}
to
postgresql_cmd()
{
su -l ${postgresql_user} -c "exec ${command} ${command_args}
${rc_arg}"
}
postgresql_command()
{
if [ ".$1" = ".start" ]; then
pidfile="${postgresql_data}/postmaster.pid"
if [ -e ${pidfile} ]; then
#check if postmaster process really exists
pid_fromfile=`head -1 ${pidfile}`
real_pid=`ps ax | grep -v grep | grep postmaster
| grep ${postgresql_data} | awk '{print $1}'`
if [ "x${pid_fromfile}" = "x${real_pid}" ]; then
echo "Postmater for datadir
${postgresql_data} already run with pid $real_pid"
else
#we have stale pidfile, remove it
unlink $pidfile
#and run postmater safely
postgresql_cmd
fi
else
#.pid file not exists, clean startup
postgresql_cmd
fi
else
postgresql_cmd
fi
}
That I hope satisfy all cases with stale .pid file...
--
Ruslan A Dautkhanov
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