Configure a Python as a service in AWS EC2

custom-service.sh

#!/bin/bash
#
# custom-service    Start up custom-service 
#
# chkconfig: 2345 55 25
# description: the custom service (Python)
#
# processname: custom-service

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

# set the python script name
SNAME=custom-service.py

# the path directory and name of the python program (warning: do not change $SNAME var)
PROG=/var/www/python/$SNAME

# start function
start() {
    #check the daemon status first
    if [ -f /var/lock/subsys/$SNAME ]
    then
        echo "$SNAME is already started!"
        exit 0;
    else
        echo $"Starting $SNAME ..."
        nohup python $PROG &
        [ $? -eq 0 ] && touch /var/lock/subsys/$SNAME
        echo $"$SNAME started."
        exit 0;
    fi
}

#stop function
stop() {
    echo "Stopping $SNAME ..."
    pid=`ps -ef | grep "$PROG" | grep -v 'grep' | awk '{ print $2 }' | head -1`
    if [ "$pid" != "" ]; then
      echo "Kill proccess " + $pid
      kill $pid
      rm -rf /var/lock/subsys/$SNAME
    else
      echo "$SNAME is stoped."
      rm -rf /var/lock/subsys/$SNAME
    fi
    exit 0;
}

case "$1" in
start)
  start
  ;;
stop)
  stop
  ;;
reload|restart)
  stop
  start
  ;;
status)
  pid=`ps -ef | grep "$PROG" | grep -v 'grep' | awk '{ print $2 }' | head -1`
  if [ "$pid" = "" ]; then
      echo "$SNAME is stoped. "
  else
      echo "$SNAME (pid $pid) is running..."
  fi
  ;;
*)
  echo $"\nUsage: $0 {start|stop|restart|status}"
  exit 1
esac