Gunicorn init.d script (redhat/centos)

gunicorn

#!/bin/sh

### BEGIN INIT INFO
# Provides:			 gunicorn
# Required-Start:	 $all
# Required-Stop:	 $all
# Default-Start:	 2 3 4 5
# Default-Stop:		 0 1 6
# Short-Description: starts the gunicorn server
# Description:		 starts gunicorn using start-stop-daemon
### END INIT INFO

# Gunicorn init.d script for redhat/centos
# Written originally by Wojtek 'suda' Siudzinski <admin@suda.pl>
# Adapted to redhat/centos by Daniel Lemos <xspager@gmail.com>
# Gist: https://gist.github.com/1511911
# Original: https://gist.github.com/748450
        
#
# Sample config (/etc/gunicorn/gunicorn.conf):
#
# SERVERS=(
#	'server_name	socket_or_url	project_path	number_of_workers'
# )
# RUN_AS='www-data'
#
# WARNING: user $RUN_AS must have +w on /var/run/gunicorn

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/bin/gunicorn_django
NAME=gunicorn
DESC=gunicorn
SERVER="$2"
VE_PATH=/data/env

test -x $DAEMON || exit 0

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0

if [ -f /etc/gunicorn/gunicorn.conf ] ; then
	. /etc/gunicorn/gunicorn.conf
fi

if [ ! -d /var/run/gunicorn ]; then
	mkdir /var/run/gunicorn
fi

start () {
	for i in "${SERVERS[@]}"
	do
		:
		set -- "$i"
		IFS="	"; declare -a data=($*)
		
		if [ "$SERVER" ]; then
			if [ "$SERVER" != ${data[0]} ]; then
				continue
			fi
		fi
		echo "Spawning ${data[0]}"
                cd ${data[2]}
		daemon --user $RUN_AS --pidfile /var/run/gunicorn/${data[0]}.pid $DAEMON -b ${data[1]} -w ${data[3]} -D -p /var/run/gunicorn/${data[0]}.pid
	done
	return
}

stop () {
	for i in "${SERVERS[@]}"
	do
		:
		set -- "$i"
		IFS="	"; declare -a data=($*)
		if [ "$SERVER" ]; then
			if [ "$SERVER" != ${data[0]} ]; then
				continue
			fi
		fi
		if [ -f /var/run/gunicorn/${data[0]}.pid ]; then
			echo "Killing ${data[0]}"
			kill $(cat /var/run/gunicorn/${data[0]}.pid)
		fi
	done	
}

case "$1" in
  start)
		echo "Starting $DESC"
		start
		;;
  stop)
		echo "Stopping $DESC"
		stop
		;;
  restart)
		echo "Restarting $DESC"
		stop
		sleep 1
		start
		;;
  *)
		N=/etc/init.d/$NAME
		echo "Usage: $N {start|stop|restart} [particular_server_to_restart]" >&2
		exit 1
		;;
esac

exit 0