Start app as root with pm2

Question

I have a daemon that must be run as root on startup.

I use pm2 to start other apps but can not figure out if it can start an app as root. Can it be done?

If not,

Answer 1

If you only need your daemon to be run as root in order to access a port number (such as 80 or 443), the pm2 documentation recommends using authbind. So, if you want the user yourusername to have access to port 80, run:

$ sudo apt-get install authbind
$ sudo touch /etc/authbind/byport/80
$ sudo chown yourusername /etc/authbind/byport/80
$ sudo chmod 755 /etc/authbind/byport/80
$ authbind --deep pm2 update

And then use authbind --deep pm2 instead of pm2. The documentation suggests setting up an alias.