How to properly run Pm2 from Ubuntu/Linux?

Question

System administration

If you write:
pm2 start app.js - everything starts and works as it should,
but if you do:
pm2 start /home/{projectname}/app.js
then a mountain of errors related to the application paths falls ...
How to make it understand where the application root is ?

Answer 1

It is necessary to build a project relative to the executable file, put all the paths in the config, for example.

var __project       = exports.__project       = path.join(__dirname, '../')
  , __app           = exports.__app           = path.join(__project, app)
  , __configs       = exports.__configs       = path.join(__project, 'config')
  , __helpers       = exports.__helpers       = path.join(__app, 'helpers')

Answer 2

Try sudo pm2 start /home/{projectname}/app.js