How to make it auto start on server restart?

Question

Node.js

Now I'm running a project using pm2, the question arose of what to do if, for example, the server itself reboots? Well, for example, power surges.
Now I googled what pm2 startup is, but I don’t quite understand whether it works for these purposes and how it works?
It turns out that I need to first write pm2 save to save the processes, then pm2 startup and I will receive a command to start? Or pm2 save can be left out? And if he gives a command to start, then it means that when the server is rebooted, it still needs to be entered manually, if so, how then to be?

Answer 1

Yes, it is for these purposes, you just need to execute the command once, which will appear when you enter pm2 startup. After that, when you rebuy pm2, everything will restart itself