To get the most from PM2 and Keymetrics, make sure your PM2 version is up-to-date.
Here is the Changelog: https://github.com/Unitech/pm2/releases
Updating PM2 is very fast (less than some seconds) and seamless.
First make sure that you save all your processes:
$ pm2 save
Then install the latest PM2 version from NPM:
$ npm install pm2 -g
And finally update the in-memory PM2 process:
$ pm2 update
That’s all, you now have a fresh PM2 system!