Check manual page of esx_vsphere_vm_datastores

Virtual Machine under ESX: Name and Disk Free of Datastores
Distribution official part of Check_MK
License GPL
Supported Agents vSphere
This check provices information about any datastores the virtualmachine is running on. Reported fields are the name, the total capacity and the percentage of free space.

The check returns OK, unless the datastore information is missing. In this case it returns UNKNOWN.

See "Monitoring VMWare ESX with Checkmk" in the online documentation as well.

Discovery

One service is created for each Virtual Machine.