pm2 starts two duplicate processes with a different version

Question

I am using pm2 version 4.2.3

When I run this command: pm2 start node launchers/engine_launcher.js --name "engine", it starts the following:

id  │ name                           │ namespace   │ version │ mode    │ pid
------------------------------------------------------------------------------
12  │ engine                         │ default     │ 0.34.0  │ fork    │ 893
13  │ engine                         │ default     │ 1.0.0   │ fork    │ 8946

I want only one process to be started. If I pm2 delete engine, both go away.

launchers/engine_launcher.js is a regular javascript script.

What causes this problem? How can I start only one version of my script?

This doesn't happen for other scripts, only this one.

Cariole

Answer 1

Instead of start node app.js use just start app.js.

Wapiti

This works for me. Can you explain what really happens when we use start? – Affenpinscher

Will this still work if app.js doesn't have a shebang line? – Florrie

I think it means pm2 start app.js starts app.js inside node directly instead of running a second node process, think it works without a shebang line – Wapiti

Answer 2

pm2 delete 12 is one way to do it.

Cariole