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[Hang Yang <1812110@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Environment:
Queens: Nova, Neutron, Designate(External DNS)
Network has dns_domain set

Steps to reproduce:
1. Create a port from the network
2. Create an instance with the port attached, dns_name in the port will be updated and a record will be created in user's recordset.
3. Delete the instance.
4. Check the port, the dns_name is reset to empty but the dns record under user's zone is not removed.

This also affects the usage of orchestration components like Senlin/Heat
since they usually create a port separately and then create an instance
with the port.

This bug was filed in Neutron before and has more debug information:
https://bugs.launchpad.net/neutron/+bug/1741079

** Affects: nova
     Importance: Undecided
     Assignee: Hang Yang (hangyang)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => Hang Yang (hangyang)

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https://bugs.launchpad.net/bugs/1812110

Title:
  Detaching pre-existing port  fails to remove user's dns record

Status in OpenStack Compute (nova):
  New

Bug description:
  Environment:
  Queens: Nova, Neutron, Designate(External DNS)
  Network has dns_domain set

  Steps to reproduce:
  1. Create a port from the network
  2. Create an instance with the port attached, dns_name in the port will be updated and a record will be created in user's recordset.
  3. Delete the instance.
  4. Check the port, the dns_name is reset to empty but the dns record under user's zone is not removed.

  This also affects the usage of orchestration components like
  Senlin/Heat since they usually create a port separately and then
  create an instance with the port.

  This bug was filed in Neutron before and has more debug information:
  https://bugs.launchpad.net/neutron/+bug/1741079

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