Test Gnmond

You can easily test Gnmond for your clusters. Just download the latest (source) version form sourceforge and unzip it. Then add some (reachable) nodes of your cluster into the file, edit the file Plugins/Health/localhost.py (as descriped in the documentation under Get Started / Configure Gnmond for a Cluster) and check the states over telnet.
You do not even have to install Gnmond, nor it will use administrator rights.
If you want to know more check out the documentation.