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#!/bin/bash
# PostgreSQL startup script for Slackware Linux
# Copyright 2007 Adis Nezirovic <adis _at_ linux.org.ba>
# Licensed under GNU GPL v2
# Do not source this script (since it contains exit() calls)
# Before you can run postgresql you'll need to create the
# database files in /var/lib/pgsql. The following should do
# the trick.
#
# $ su postgres -c "initdb -D /var/lib/pgsql/data"
#
LOGFILE=/var/log/postgresql
DATADIR=/var/lib/pgsql/data
POSTGRES=/usr/bin/postgres
PIDFILE=postmaster.pid
# oom-killer score
# if defined and set to -1000, main postmaster wont be killed
# by Linux OOM killer, but individual backends still could be
# (since OOM_SCORE_ADJ in SlackBuild is set to 0)
#
# http://www.kernel.org/doc/Documentation/filesystems/proc.txt
OOM_SCORE_ADJ=-1000
# Return values (according to LSB):
# 0 - success
# 1 - generic or unspecified error
# 2 - invalid or excess argument(s)
# 3 - unimplemented feature (e.g. "reload")
# 4 - insufficient privilege
# 5 - program is not installed
# 6 - program is not configured
# 7 - program is not running
pg_ctl()
{
CMD="/usr/bin/pg_ctl $@"
su - postgres -c "$CMD"
}
if [ ! -f $POSTGRES ]; then
echo "Could not find 'postgres' binary. Maybe PostgreSQL is not installed properly?"
exit 5
fi
case "$1" in
"start")
echo "Starting PostgreSQL"
touch $LOGFILE
chown postgres:wheel $LOGFILE
chmod 0640 $LOGFILE
if [ ! -e $DATADIR/PG_VERSION ]; then
echo "You should initialize the PostgreSQL database at location $DATADIR"
exit 6
fi
if [ $(pgrep -f $POSTGRES) ]; then
echo "PostgreSQL daemon already running"
if [ ! -f $DATADIR/$PIDFILE ]; then
echo "Warning: Missing pid file $DATADIR/$PIDFILE"
fi
exit 1
else # remove old socket, if it exists and no daemon is running.
if [ ! -f $DATADIR/$PIDFILE ]; then
rm -f /tmp/.s.PGSQL.5432
rm -f /tmp/.s.PGSQL.5432.lock
test x"$OOM_SCORE_ADJ" != x && echo "$OOM_SCORE_ADJ" > /proc/self/oom_score_adj
pg_ctl start -w -l $LOGFILE -D $DATADIR
exit 0
else
echo "PostgreSQL daemon was not properly shut down"
echo "Please remove stale pid file $DATADIR/$PIDFILE"
exit 7
fi
fi
;;
"stop")
echo "Shutting down PostgreSQL..."
pg_ctl stop -l $LOGFILE -D $DATADIR -m smart
;;
"force-stop")
# Take care! This will kill _all_ client connections
# and rollback current transactions.
echo "Shutting down PostgreSQL (fast)..."
pg_ctl stop -l $LOGFILE -D $DATADIR -m fast
;;
"unclean-stop")
# Take care! This will abort server process itself
# resulting with database recovery on next start.
echo "Shutting down PostgreSQL (immediate)..."
pg_ctl stop -l $LOGFILE -D $DATADIR -m immediate
;;
"restart")
echo "Restarting PostgreSQL..."
test x"$OOM_SCORE_ADJ" != x && echo "$OOM_SCORE_ADJ" > /proc/self/oom_score_adj
pg_ctl restart -l $LOGFILE -D $DATADIR -m smart
;;
"force-restart")
# Take care! This will kill _all_ client connections
# and rollback current transactions.
echo "Restarting PostgreSQL (fast)..."
pg_ctl restart -l $LOGFILE -D $DATADIR -m fast
;;
"unclean-restart")
# Take care: This will abort server process itself
# resulting with database recovery on start.
echo "Restarting PostgreSQL (immediate)..."
pg_ctl restart -l $LOGFILE -D $DATADIR -m immediate
;;
"reload")
echo "Reloading configuration for PostgreSQL..."
pg_ctl reload -l $LOGFILE -D $DATADIR -m smart
;;
"status")
if [ $(pgrep -f $POSTGRES) ]; then
echo "PostgreSQL is running"
if [ ! -e $DATADIR/$PIDFILE ]; then
echo "Warning: Missing pid file $DATADIR/$PIDFILE"
fi
exit 0
else
echo "PostgreSQL is stopped"
if [ -e $DATADIR/$PIDFILE ]; then
echo "Detected stale pid file $DATADIR/$PIDFILE"
fi
exit 0
fi
;;
*)
# unclean-stop and unclean-restart are not documented on purpose.
echo "Usage: $0 {start|stop|force-stop|status|restart|force-restart|reload}"
exit 1
;;
esac
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