Installing Metron on Ambari Sandbox - HDF 3.1

[#1]

Hello, I'm trying to install Metron on the HDF 3.1 Sandbox and I would like to know if there is any easy and fast way to install it.

I found this guide and require maven to be installed and also "A Node.js repository installed on the host running the Management and Alarm UI."and not sure what is about I can install node.js and NVM but not sure how to properly configure it. 

Also where I can fin the rightRPMs?

Any help is appreciated, thank you!