Unicorn Init on boot with config

config.rb

# Minimal sample configuration file for Unicorn (not Rack) when used
# with daemonization (unicorn -D) started in your working directory.
#
# See http://unicorn.bogomips.org/Unicorn/Configurator.html for complete
# documentation.
# See also http://unicorn.bogomips.org/examples/unicorn.conf.rb for
# a more verbose configuration using more features.

listen 2007 # by default Unicorn listens on port 8080
worker_processes 1 # this should be >= nr_cpus
pid "/var/www/app/tmp/pids/unicorn.pid"
stderr_path "/var/www/app/log/unicorn.log"
stdout_path "/var/www/app/log/unicorn.log"

unicorn-init.sh

#!/bin/sh
### BEGIN INIT INFO
# Provides:          APPLICATION
# Required-Start:    $all
# Required-Stop:     $network $local_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start the APPLICATION unicorns at boot
# Description:       Enable APPLICATION at boot time.
### END INIT INFO

set -e
# Example init script, this can be used with nginx, too,
# since nginx and unicorn accept the same signals

# Feel free to change any of the following variables for your app:
TIMEOUT=${TIMEOUT-60}
ENVIRONMENT=development
APP_ROOT=/var/www/app
PID=$APP_ROOT/tmp/pids/unicorn.pid
CMD="unicorn -D -E $ENVIRONMENT -c $APP_ROOT/config/unicorn.rb"
#INIT_CONF=$APP_ROOT/config/unicorn.rb
action="$1"
set -u

# test -f "$INIT_CONF" && . $INIT_CONF

old_pid="$PID.oldbin"

cd $APP_ROOT || exit 1

sig () {
	test -s "$PID" && kill -$1 `cat $PID`
}

oldsig () {
	test -s $old_pid && kill -$1 `cat $old_pid`
}

case $action in
start)
	sig 0 && echo >&2 "Already running" && exit 0
	$CMD
	;;
stop)
	sig QUIT && exit 0
	echo >&2 "Not running"
	;;
force-stop)
	sig TERM && exit 0
	echo >&2 "Not running"
	;;
restart|reload)
	sig HUP && echo reloaded OK && exit 0
	echo >&2 "Couldn't reload, starting '$CMD' instead"
	$CMD
	;;
upgrade)
	if sig USR2 && sleep 2 && sig 0 && oldsig QUIT
	then
		n=$TIMEOUT
		while test -s $old_pid && test $n -ge 0
		do
			printf '.' && sleep 1 && n=$(( $n - 1 ))
		done
		echo

		if test $n -lt 0 && test -s $old_pid
		then
			echo >&2 "$old_pid still exists after $TIMEOUT seconds"
			exit 1
		fi
		exit 0
	fi
	echo >&2 "Couldn't upgrade, starting '$CMD' instead"
	$CMD
	;;
reopen-logs)
	sig USR1
	;;
*)
	echo >&2 "Usage: $0 <start|stop|restart|upgrade|force-stop|reopen-logs>"
	exit 1
	;;
esac