[Rdo-list] Overcloud nodes host-name persistence

[AliReza Taleghani]

It seem that If you restart bare metal servers! there will be a problem
after boot that the node will be register it self with a different name
rather than the one used on deployment!


as the attachment shown the failed compute node is registered with new name:
=> overcloud-novacompute-2.localdomain
as it was
=> overcloud-novacompute-2
during deployment!

I check:
```
[heat-admin at overcloud-novacompute-2 ~]$ sudo hostnamectl set-hostname
--transient overcloud-novacompute-2
[heat-admin at overcloud-novacompute-2 ~]$ sudo hostnamectl set-hostname
overcloud-novacompute-2
````
but after reboot the server again append localdomain to iit's hostname

Sincerely,
Ali R. Taleghani
@linkedIn <http://ir.linkedin.com/in/taleghani>
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