We have 3 vmhost in the cluster. One of the host went grey in vcenter and the vms were greyed out but it said they were still powered on, but no one could access any vm that was on this affected host.
The keyboard would not respond on the host so we had to do a hard power off. Once it came back up I was able to get HA back on it and all of the vms powered back up.
What can I check to see what may have caused this outage or does anyone know what may have caused this issue?