Check manual page of esx_vsphere_vm_mem_usage

Virtual Machine under ESX: Used Memory (RAM)
Distribution official part of Check_MK
License GPL
Supported Agents vSphere
The check reports used memory (RAM) for host, guest, ballooned, private and shared memory.

The check always returns OK state.

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

Discovery

One service is created for each Virtual Machine.