If you need to pass multiple variables, you could also use a process.json/yml file, see here:

Then start like: pm2 start process.[json|yml]

@Hooman

Correct - You would use something such as:

USER_ID=123456 USER_KEY=foo node app.js

...to pass environment variables and then access them using

process.env.USER_ID

and

process.env.USER_KEY

This makes me wonder, in most other cases I'm storing things like third party api keys in my .env file. When I run my app on ubuntu I do env $(cat .env) pm2 start .... Is the process.json file expected to be checked into the repo? If so, I wouldn't want to embed my api keys and what not. Would be nice if pm2 could source the .env file on start up (or specify a file that has the environment vars) so they don't have to be embeded into a checked in file...