Gunicorn init.d script (debian/ubuntu/centos/redhat)

gunicorn.sh

#!/bin/sh
# chkconfig: 2345 55 45
# description: start or stop gunicorn

# chkconfig –add gunicorn in centos and redhat
# update-rc.d gunicorn defaults in debian and ubuntu

### 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 debian/ubuntu
# Written by Wojtek 'suda' Siudzinski <[email protected]>
# Gist: https://gist.github.com/748450
#
# Sample config (/etc/default/gunicorn):
#
# SERVERS=(
#	'server_name	port	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/local/bin/gunicorn
NAME=gunicorn
DESC=gunicorn
SERVER="$2"

test -x $DAEMON || exit 0

if [ -f /etc/default/gunicorn ] ; then
	. /etc/default/gunicorn
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 ${data[0]}:app -b 127.0.0.1:${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