Installing munin for monitoring

While looking for help installing Munin (https://en.wikipedia.org/wiki/Munin_(software)) on CWP I made a few notes. I thought of sharing them here in case they're useful (plus I'll be able to find them in the future).

This applies to CWP on CentOS6; it uses YUM so it may work on CentOS7 but I can't test it.

Install munin and munin-node:
siamsport

Munin is so useful that it should be a standard option to install on all servers, IMHO.
Much better than sending potentially sensitive information to a third party, such as netdata! Plus it allows you to analyse many aspects of your environment and is extensible with addon modules.

[At this point on time, NO server should be used in production with CentOS 6.]

I'd be interested in seeing your installation steps, to see how it compares to my method.