Startup script for Graphite on Gunicorn

gunicorn-graphite.sh

#! /bin/sh
### BEGIN INIT INFO
# Provides:          gunicorn-graphite
# Required-Start:    $remote_fs $syslog mysql
# Required-Stop:     $remote_fs $syslog mysql
# Should-Start:      $nginx
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: gunicorn + nginx debian init script
# Description:       gunicorn + nginx debian init script
### END INIT INFO

PROJECT=/opt/graphite/webapp/graphite/
PORT=8000
LOGDIR=/var/log/gunicorn
PATH=/bin:/usr/bin:/usr/local/bin
USER=www-data
GROUP=www-data
IP=localhost
WORKERS=1
NAME=graphite
DESC="graphite with gunicorn"
LOGFILE="$LOGDIR/$NAME.log"
PIDFILE="/var/run/gunicorn_$NAME.pid"
CMD="gunicorn_django --user=$USER --group=$GROUP --daemon --workers=$WORKERS --bind=$IP:$PORT --pid=$PIDFILE --name=$NAME --log-file=$LOGFILE --log-level=info"

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
# and status_of_proc is working.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
do_start() {
  # Return
  #   0 if daemon has been started
  #   1 if daemon was already running
  #   2 if daemon could not be started
  if [ -e $PIDFILE ]; then
    return 1
  fi
  cd $PROJECT
  $CMD
  if [ $? = 0 ]; then
    return 0
  else
    return 2
  fi
}

#
# Function that stops the daemon/service
#
do_stop() {
  # Return
  #   0 if daemon has been stopped
  #   1 if daemon was already stopped
  #   2 if daemon could not be stopped
  #   other if a failure occurred
  if [ -f $PIDFILE ]; then
    PID=`cat $PIDFILE`
    rm $PIDFILE
    kill -15 $PID
    if [ $? = 0 ]; then
      return 0
    else
      return 2
    fi
  else
    return 1
  fi
}

do_reload() {
  if [ -f $PIDFILE ]; then
    PID=`cat $PIDFILE`
    kill -HUP $PID
    return $?
  fi
  return 2
}

case "$1" in
  start)
  [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
  do_start
  case "$?" in
    0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
    2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
  esac
  ;;
  stop)
  [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
  do_stop
  case "$?" in
    0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
    2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
  esac
  ;;
  restart)
  log_daemon_msg "Restarting $DESC" "$NAME"
 do_stop
  case "$?" in
    0|1)
    do_start
    case "$?" in
      0) log_end_msg 0 ;;
      1) log_end_msg 1 ;; # Old process is still running
      *) log_end_msg 1 ;; # Failed to start
    esac
    ;;
    *)
      # Failed to stop
    log_end_msg 1
    ;;
  esac
  ;;
  reload)
  log_daemon_msg "Reloading $DESC" "$NAME"
  do_reload
  case "$?" in
    0) log_end_msg 0 ;;
    *) log_end_msg 1 ;;
  esac
  ;;
  *)
  echo "Usage: $SCRIPTNAME {start|stop|restart|reload}" >&2
  exit 3
  ;;
esac

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