We upgraded the UCCX server and the VM tools are current but Not Running. The Guest OS didn't change from Red Hat Linux 6 (64-bit) to Cent OS 4/5 64bit. Our Hypervisor is VMware ESXi, 6.7.0, 16316930.
We are scheduling a downtime to correct the VMtools but didn't see in the Install/Upgrade guide how to update the OS.