Run PM2 on a Synology , file need to be create in `/usr/local/etc/rc.d`

pm2.sh

#!/bin/sh


: ${pm2_user="root"}

command="/usr/local/lib/node_modules/pm2/bin/pm2"
pidfile="/home/${pm2_user}/.pm2/${name}.pid"


super() {
        su - "${pm2_user}" -c "$*"
}

pm2_start() {
        unset "${rc_flags}_cmd"
        if pm2_running; then
                echo "Pm2 is already running, 'pm2 list' to see running processes"
        else
                echo "Starting pm2."
                super $command resurrect
        fi
}

pm2_stop() {
        echo "Stopping ${name}..."
        #super $command dump
        super $command delete all
        super $command kill
}

pm2_reload() {
        echo "Reloading ${name}"
        super $command reload all
}

pm2_status() {
        super $command list
}

pm2_running() {
        process_id=$(pgrep -F ${pidfile})
        if [ "${process_id}" -gt 0 ]; then
                return 0
        else
                return 1
        fi
}


case "$1" in
  start)
    pm2_start
    ;;
  stop)
    pm2_stop
    ;;
  restart)
    pm2_reload
    ;;
  status)
    pm2_status
    ;;
  *)
esac