Troubleshooting Compute host name change detection

Updated

If you start the Compute service (nova) and your Compute host detects a name change, you receive the following error message:

Found 7 instances on hypervisor but no ComputeNode record exists with host compute01.example.com node compute01.example.com; potential rename detected - aborting startup

To recover from this error, you must know the reason for the change of the host names. Here are the three possible reasons for the change of the host names:

  • You have changed the name of the Compute host.
  • The DNS is not working correctly and has assigned a different name to the Compute host.
  • You have a deployment problem.

When you resolve the issue, you must restart the Compute service.

Note
The nova-libvirt container contains information about the host name. If you resolve an issue with a Compute host name, restart this container and the Compute host to ensure that all components contain the correct name.

For further assistance, contact the Red Hat Technical Support Team.

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