After spinning up CloudStack and playing with it for a bit, I decided it was time to add some monitors. We’re currently using Nagios, although I may start looking at Zenoss. Anyhow, I built a couple of plugins to mimic some of the functionality of the Zenoss ZenPack for CloudStack. For example, I can graph how many instances are in my cloud in addition to memory/cpu/storage/IP allocations:
You can find all of the code at in my nagios-cloudstack project at GitHub.