Hi Sean, I am frustrated that ESXi-Support in Zenoss Open Source is somewhat flaky. I am monitorig 14 ESXi-Servers ranging from V.4.1, 5.0 to 5.1. All of them can be monitored with Zenoss, the only real problem (besides cosmetic issues of non-functioning buttons) is that on most of these machines Zenoss is not able to find any Guests. This is independent of ESXi version or patch level and I gave up finding out why from a bunch of virtually identical ESXi hosts some (few) show the VMs and (most) others don't. Error message during modelling is:
WARNING:zen.ZenModeler:The plugin community.cmd.VMwareESXiHostMap returned no results.
WARNING:zen.ZenModeler:The plugin community.cmd.VMwareESXiGuestMap returned no results.
The only thing that works for me consistently on all ESXi versions are the host Graphs: CPU Usage, Disk Usage, Host Memory and Host Swap.
Another side effect is that monitoring 14 ESXi-Hosts causes a constant stream of 2 Mbit/s bandwith even with enlarged monitoring intervals. This is unacceptable for us so we consider turning off ESXi monitoring altogether, Too bad that no one seems to have time in actively support VMware monitoring in the Open Source version of Zenoss. Don't know how well the commercial VMware Zenpack works, but if they would decide to put it in the open source version, it would be a great step forward in making Zenoss the premier NMS