Pm2: process.env.NODE_ENV not set passing value from terminal?

[eldyvoon]

What's going wrong?

I have an express.js app, my console.log(process.env.NODE_ENV) got undefined when I start my node server using pm2
I tried both commands below

NODE_ENV=production pm2 start server
pm2 start server --env production

I tried normal startup with node like NODE_ENV=production node server.js I can see the console.log(process.env.NODE_ENV) is correct.

[eldyvoon]

Ok, my bad, I have to kill my app first: pm2 kill