Check manual page of esx_vsphere_vm.guest_tools
Virtual Machine under ESX: Guest Tools version status
For a virtual machine running on ESX this check reports the guest tools
version status (queried from vsphere agent)
This check returns:
OK if the guest tools version is up-to-date
WARN if the guest tools need an upgrade or are not managed by VMware
CRIT if there is no heartbeat. Guest operating system may have stopped responding.
The actual state of this check can be modified by parameters
On each VM one check is generated.