Node.js : template pour script de démarrage init.d

#! /bin/sh
### BEGIN INIT INFO
# Provides:          tracky
# Required-Start:    $remote_fs $syslog $network
# Required-Stop:     $remote_fs $syslog $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: app
# Description:       app startup script
### END INIT INFO

# Author: Boris HUISGEN <bhuisgen@hbis.fr>

PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/bin
DESC="app"
NAME=app
DAEMON=/usr/local/bin/node
USER=app
GROUP=app
LOGFILE=/var/log/app/app.log
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

NODEAPP_DIR=/home/app/
NODEAPP_SCRIPT="app.js"

[ -x "$DAEMON" ] || exit 0

[ -r /etc/default/$NAME ] && . /etc/default/$NAME

. /lib/init/vars.sh
. /lib/lsb/init-functions

do_start()
{
    start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test \
        > /dev/null || return 1
    start-stop-daemon --start --quiet --make-pidfile --pidfile $PIDFILE \
        --exec $DAEMON --chdir $NODEAPP_DIR --chuid $USER:$GROUP \
        --background -- $NODEAPP_SCRIPT >> $LOGFILE 2>&1 || return 2
}

do_stop()
{
        start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE
        RETVAL="$?"
        [ "$RETVAL" = 2 ] && return 2

        start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --pidfile $PIDFILE
        [ "$?" = 2 ] && return 2

    rm -f $PIDFILE
    return "$RETVAL"
}

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
    ;;
  status)
    status_of_proc -p $PIDFILE "$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 ;;
            *) log_end_msg 1 ;;
        esac
        ;;
      *)
        log_end_msg 1
        ;;
    esac
    ;;
  *)
    echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
    exit 3
    ;;
esac

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