Template for startup script to launch unicorn instance for a given rails app. To be used with our Capistrano deployment recipe

unicorn_startup_script_template

#!/bin/bash
#
# <%= "#{application}" %>  <%= "#{application}" %> Rails application served through an Unicorn instance
#
# Author                Romain Champourlier @ softr.li
#
# chkconfig: - <%= "#{unicorn_startorder} #{unicorn_killorder}" %>
#
# description:          This a web application developed in Ruby On Rails
#                       which is served through an Unicorn instance.

# processname: unicorn_rails
# config: <%= "#{deploy_to}/shared/configs/unicorn.rb" %>
# pidfile: <%= "#{deploy_to}/shared/pids/unicorn.pid" %>
#

### BEGIN INIT INFO
# Provides:           <%= "#{application}" %>
# Required-Start:     $local_fs $remote_fs $network $syslog
# Required-Stop:      $local_fs $remote_fs $network $syslog
# Default-Start:      <%= "#{unicorn_runlevels}" %>
# Default-Stop:       <%= "#{unicorn_stoplevels}" %>
# Short-Description:  starts unicorn for <%= "#{application}" %>
# Description:        starts unicorn web server for <%= "#{application}" %> Rails app
### END INIT INFO

CMD='cd <%= "#{current_path}" %> && bundle exec <%= "#{unicorn_binary}" %> -c <%= "#{unicorn_config}" %> -E <%= "#{rails_env}" %> -D'
NAME=unicorn_rails
DESC=unicorn_rails
PID=<%= "#{deploy_to}/shared/pids/unicorn.pid" %>

case "$1" in
  start)
  echo -n "Starting $DESC: "
  su - <%= "#{user}" %> -c "$CMD"
  echo "$NAME."
  ;;
  stop)
  echo -n "Stopping $DESC: "
        kill -QUIT `cat $PID`
  echo "$NAME."
  ;;
  restart)
  echo -n "Restarting $DESC: "
        kill -QUIT `cat $PID`
  sleep 1
  su - <%= "#{user}" %> -c $CMD
  echo "$NAME."
  ;;
  reload)
        echo -n "Reloading $DESC configuration: "
        kill -HUP `cat $PID`
        echo "$NAME."
        ;;
  *)
  echo "Usage: $NAME {start|stop|restart|reload}" >&2
  exit 1
  ;;
esac

exit 0