When you start a Node.js server simply using node app.js, the server stops as soon as the shell session is killed. But if you want to keep you server running, as a server would naturally should, you need some way to keep the server proc alive.
Forever is seemingly a popular choice for running a server, as the name suggests, forever; or technically as long as you want.
While trying to install Forever, globally, via npm, it was complaining about the version number of inherits. So I did:
sudo npm install inherits -g
and then did:
sudo npm install -g forever
You are ready to run a nodejs server forever. Hence, do this:
forever start --minUptime 1000 --spinSleepTime 1000 app.js
To make sure your new service is up
forever list
And if you want to stop, use
forever stop <PID/PID>
inside the insight 
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