[SOLVED] Starting node app whenever it stops

Issue

I don't have any errors in my node app, but it stops after some requests. Though i have enabled the logs and checked, its showing on different requests.

Is it possible to start the node app whenever it is stopped ?

Currently i am using this to start the node app

To start the app

nohup npm start &

And to find the process id

ps aux | grep node

And to kill certain process

kill -9 PID

I don't want to leave the app stopped. It should be ever running. So, Is it possible to start the app whenever it gets stopped.

Thanks

Solution

You can use PM2 to monitor and restart your app for you. By default if you run your app with PM2 it will auto-restart it if it crashes.

npm install pm2@latest -g
pm2 start index.js

PM2 can also be used to run multiple instances and has commands to stop/restart individual ones.

You can get the process PID using pm2 list as well.

---

More robust use case:

Start up your app by having PM2 run 'npm start' and also give it a name to refer to it later (it will auto restart if it exits/crashes)

pm2 start npm --name="mySuperApp" -- start

Later you make some changes and want to restart it:

pm2 restart mySuperApp

Eventually you want to stop the app:

pm2 stop mySuperApp

Answered By - CodingWithSpike

Answer Checked By - Pedro (WPSolving Volunteer)