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[Alan Pevec <1197041@xxxxxxxxxxxxxxxxxx>]

** Also affects: nova/havana
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1197041

Title:
  nova compute crashes if you do not have any hosts in your cluster

Status in OpenStack Compute (Nova):
  Fix Released
Status in OpenStack Compute (nova) havana series:
  Fix Committed

Bug description:
  I forgot to add a host to my cluster and brought up nova-compute.  I
  get the following crash on startup.   A controlled  exit with a proper
  warning message would have saved me some time

  
  \\File "/opt/stack/nova/nova/virt/vmwareapi/host.py", line 156, in __init__
     self.update_status()
   File "/opt/stack/nova/nova/virt/vmwareapi/host.py", line 169, in update_status
     host_mor = vm_util.get_host_ref(self._session, self._cluster)
   File "/opt/stack/nova/nova/virt/vmwareapi/vm_util.py", line 663, in get_host_ref
     if not host_ret.ManagedObjectReference:
  AttributeError: 'Text' object has no attribute 'ManagedObjectReference'
  Removing descriptor: 6

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