Ceph admin API init script

#!/bin/sh
### BEGIN INIT INFO
# Provides:          ceph-rest-api
# Required-Start:    $network
# Required-Stop:     $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Ceph Rest API server
# Description:       Frontend Ceph Rest API server
### END INIT INFO

# Author: Sébastien Han <sebastien.han@enovance.com>>

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="Ceph Rest API"
NAME=ceph-rest-api
DAEMON=/usr/bin/ceph-rest-api
DAEMON_ARGS="--conf /etc/ceph/ceph.conf"
PID_DIR=/var/run/ceph
PIDFILE=/var/run/ceph/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
CEPH_USER=root
CEPH_GROUP=root
LOCK_DIR=/var/lock/ceph

# Exit if the package is not installed
[ -x $DAEMON ] || exit 0

. /lib/lsb/init-functions

mkdir -p ${PID_DIR}
mkdir -p ${LOCK_DIR}
chown ${CEPH_USER} ${LOCK_DIR}

do_start()
{
        start-stop-daemon --start --background --quiet --chuid ${CEPH_USER}:${CEPH_GROUP} --make-pidfile --pidfile $PIDFILE --startas $DAEMON --test > /dev/null \
                || return 1
        start-stop-daemon --start --background --quiet --chuid ${CEPH_USER}:${CEPH_GROUP} --make-pidfile --pidfile $PIDFILE --startas $DAEMON -- \
                $DAEMON_ARGS \
                || return 2
}

do_stop()
{
        start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE
        RETVAL="$?"
        rm -f $PIDFILE
        return "$RETVAL"
}

case "$1" in
    start)
        log_daemon_msg "Starting $DESC" "$NAME"
        do_start
        case "$?" in
            0|1) log_end_msg 0 ;;
            2) log_end_msg 1 ;;
        esac
        ;;
  stop)
        log_daemon_msg "Stopping $DESC" "$NAME"
        do_stop
        case "$?" in
                0|1) log_end_msg 0 ;;
                2) log_end_msg 1 ;;
        esac
        ;;
  status)
       status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
       ;;
  restart|force-reload)
        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
        ;;
  *)
        echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
        exit 3
        ;;
esac