Running as a service with an init script

Debian / Ubuntu

Put as init script /etc/init.d/etherdraw. Then do chmod +x /etc/init.d/etherdraw. Activate it with update-rc.d etherdraw defaults.

#!/bin/sh

### BEGIN INIT INFO
# Provides:          etherdraw
# Required-Start:    $local_fs $remote_fs $network $syslog
# Required-Stop:     $local_fs $remote_fs $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts etherdraw
# Description:       starts etherdraw using start-stop-daemon
### END INIT INFO

PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/opt/node/bin"
LOGFILE="/var/log/etherdraw/etherdraw.log"
DRAW_DIR="/home/draw/draw"
DRAW_BIN="bin/safeRun.sh"
USER="draw"
GROUP="draw"
DESC="etherdraw"
NAME="etherdraw"

set -e

. /lib/lsb/init-functions

start() {
  echo "Starting $DESC... "
        start-stop-daemon --start --chuid "$USER:$GROUP" --background --make-pidfile --pidfile /var/run/$NAME.pid --exec $DRAW_DIR/$DRAW_BIN -- $LOGFILE || true
  echo "done"
}
#We need this function to ensure the whole process tree will be killed
killtree() {
    local _pid=$1
    local _sig=${2-TERM}
    for _child in $(ps -o pid --no-headers --ppid ${_pid}); do
        killtree ${_child} ${_sig}
    done
    kill -${_sig} ${_pid}
}

stop() {
  echo "Stopping $DESC... "
   while test -d /proc/$(cat /var/run/$NAME.pid); do
    killtree $(cat /var/run/$NAME.pid) 15
    sleep 0.5
  done
  rm /var/run/$NAME.pid
  echo "done"
}
status() {
  status_of_proc -p /var/run/$NAME.pid "" "etherdraw" && exit 0 || exit $?
}
case "$1" in
  start)
          start
          ;;
  stop)
    stop
          ;;
  restart)
          stop
          start
          ;;
  status)
          status
          ;;
  *)
          echo "Usage: $NAME {start|stop|restart|status}" >&2
          exit 1
          ;;
esac

exit 0

#CentOS / RHEL

Copy to /etc/init/etherdraw.conf then run with initctl start etherdraw

# Etherdraw System Service
description "Etherdraw System Service"

start on runlevel [2345]
stop on shutdown
respawn
console output

script
  # PATH="/home/draw/:/usr/local/bin:${PATH}"
  cd /home/draw/
  exec /usr/local/bin/node /home/draw/server.js
end script