Failure to add Host to cluster in RHEV 3.5, getting error as: Failed to execute stage 'Setup validation': Cannot resolve kdump destination address

Issue

• Attempt to add host to the cluster fails with error:

$ less var/log/ovirt-engine/host-deploy/ovirt-<time_stamp>.log
<time_stamp> WARNING otopi.plugins.otopi.network.hostname hostname._validation:116 Cannot validate host name settings, reason: resolved host does not match any of the local addresses
<time_stamp> DEBUG otopi.plugins.ovirt_host_deploy.kdump.packages packages._resolve_destination_address:126 Cannot resolve kdump destination address '<host_name>'
Traceback (most recent call last):
  File "/tmp/ovirt-oSYw6H9TDt/otopi-plugins/ovirt-host-deploy/kdump/packages.py", line 115, in _resolve_destination_address
    None,
gaierror: [Errno -3] Temporary failure in name resolution
<time_stamp> DEBUG otopi.context context._executeMethod:152 method exception
Traceback (most recent call last):
  File "/tmp/ovirt-oSYw6H9TDt/pythonlib/otopi/context.py", line 142, in _executeMethod
    method['method']()
  File "/tmp/ovirt-oSYw6H9TDt/otopi-plugins/ovirt-host-deploy/kdump/packages.py", line 244, in _validate
    self.environment[odeploycons.KdumpEnv.DESTINATION_ADDRESS],
  File "/tmp/ovirt-oSYw6H9TDt/otopi-plugins/ovirt-host-deploy/kdump/packages.py", line 130, in _resolve_destination_address
    host=host,
RuntimeError: Cannot resolve kdump destination address '<host_name>'
<time_stamp> ERROR otopi.context context._executeMethod:161 Failed to execute stage 'Setup validation': Cannot resolve kdump destination address '<host_name>'