502 error when running Node app with PM2

I have followed the instructions laid out in this tutorial

I can successfully run my application using

$ sudo node app.js

and access it in my browser.

However, when I run the app using

$ pm2 start app.js

it says the app is running but when I access it in the browser I get a 502 Bad Gateway error. Any ideas?

Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Accepted Answer

Hi there @digitaloceanjd,

It sounds like that the application might not be starting, what happens if you try to get information for your application with:

  1. pm2 info app_name

And also try to use the pm2 monit command to check the status of the application.

I would also recommend checking your Nginx error logs:

tail -100 /var/log/nginx/error.log

Another thing that I could suggest is making sure that your application is listening on the correct port:

sudo netstat -plant

Also, as a side note here is also a quick video on how to deploy Node.js with PM2, Nginx as a reverse proxy, and Cloudflare for SSL termination:

Let me know how it goes! Regards, Bobby

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.

$pm2 kill

$pm2 start app.js

working fine and issue solved