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#!/bin/bash
# PostgreSQL startup script for Slackware Linux
#
# $Revision$
# $Date$
#
# Copyright 2007-2018 Adis Nezirovic <adis_at_linux.org.ba>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# Do not source this script (since it contains exit() calls)
#
# Since version 9.3 this startup script can run multiple PostgreSQL
# versions on different ports and with different data dirs.
#
# e.g. PG_VERSION=14 PG_PORT=6432 /etc/rc.d/rc.@PRGNAM@ start
PG_VERSION=${PG_VERSION:-@PG_VERSION@}
PG_PORT=${PG_PORT:-@PG_PORT@}
LIBDIRSUFFIX="@LIBDIRSUFFIX@"
LOGFILE=/var/log/@PRGNAM@-$PG_VERSION
DATADIR=/var/lib/pgsql/$PG_VERSION/data
POSTGRES=/usr/lib${LIBDIRSUFFIX}/@PRGNAM@/$PG_VERSION/bin/postgres
PG_CTL=/usr/lib${LIBDIRSUFFIX}/@PRGNAM@/$PG_VERSION/bin/pg_ctl
PIDFILE=$DATADIR/postmaster.pid
# oom-killer score
#
# https://www.postgresql.org/docs/14/kernel-resources.html#LINUX-MEMORY-OVERCOMMIT
PG_OOM_ADJUST_FILE=/proc/self/oom_score_adj
PG_MASTER_OOM_SCORE_ADJ=-1000
PG_CHILD_OOM_SCORE_ADJ=0
PG_ENV="PG_OOM_ADJUST_FILE=$PG_OOM_ADJUST_FILE PG_OOM_ADJUST_VALUE=$PG_CHILD_OOM_SCORE_ADJ"
# Return values (according to LSB):
# 0 - success
# 1 - generic or unspecified error
# 2 - invalid or excess argument(s)
# 3 - unimplemented feature (e.g. "reload")
# 4 - insufficient privilege
# 5 - program is not installed
# 6 - program is not configured
# 7 - program is not running
pg_ctl()
{
CMD="$PG_CTL -o '-p $PG_PORT' $@"
su - postgres -c "$PG_ENV $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"
echo "e.g. su postgres -c \"initdb -D $DATADIR --locale=en_US.UTF-8 -A md5 -W\""
exit 6
fi
if [ $(pgrep -f $POSTGRES) ]; then
echo "PostgreSQL daemon already running"
if [ ! -f $PIDFILE ]; then
echo "Warning: Missing pid file $PIDFILE"
fi
exit 1
else
test -e "$PG_OOM_ADJUST_FILE" && echo "$PG_MASTER_OOM_SCORE_ADJ" > "$PG_OOM_ADJUST_FILE"
pg_ctl start -w -l $LOGFILE -D $DATADIR
exit 0
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 $DATADIR -m immediate
;;
"restart")
echo "Restarting PostgreSQL..."
test -e "$PG_OOM_ADJUST_FILE" && echo "$PG_MASTER_OOM_SCORE_ADJ" > "$PG_OOM_ADJUST_FILE"
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 $PIDFILE ]; then
echo "Warning: Missing pid file $PIDFILE"
fi
exit 0
else
echo "PostgreSQL is stopped"
if [ -e $PIDFILE ]; then
echo "Detected stale pid file $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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