Virtual machines were not available to users as system was not completing the reservations made.
Virtual Computing Lab was unavailable.
The OpenNebula controller failed which controls the actual virtual machines. This was complicated by another system that would normally automate the restart of the OpenNebula controller also failing
Both the OpenNebula controller and the automation server were restarted and all servers returned to operation.
The root cause of the initial problem is unknown. This scenario is highly unlikely to reoccur.