[Bug 1947127] Re: [SRU] Some DNS extensions not working with OVN

[OpenStack Infra]

Reviewed:  https://review.opendev.org/c/openstack/neutron/+/857791
Committed: https://opendev.org/openstack/neutron/commit/4c76a5349476110416d39121db9004b46d268a1d
Submitter: "Zuul (22348)"
Branch:    stable/wallaby

commit 4c76a5349476110416d39121db9004b46d268a1d
Author: Dr. Jens Harbott <harbott at osism.tech>
Date:   Thu Oct 14 11:19:41 2021 +0200

    Fix list of DNS extensions supported by OVN
    
    The OVN driver needs to announce all DNS extensions as supported,
    otherwise the neutron server will reject them.
    
    Conflicts:
            doc/source/admin/ovn/features.rst
            neutron/common/ovn/extensions.py
    
    Closes-Bug: 1947127
    Signed-off-by: Dr. Jens Harbott <harbott at osism.tech>
    Change-Id: Ic269902ef7a16893c4ea624b04347d04db4f52d9


** Changed in: cloud-archive/wallaby
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1947127

Title:
  [SRU] Some DNS extensions not working with OVN

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive ussuri series:
  New
Status in Ubuntu Cloud Archive victoria series:
  New
Status in Ubuntu Cloud Archive wallaby series:
  Fix Committed
Status in Ubuntu Cloud Archive xena series:
  Fix Released
Status in Ubuntu Cloud Archive yoga series:
  Fix Released
Status in neutron:
  Fix Released
Status in neutron package in Ubuntu:
  Fix Released
Status in neutron source package in Impish:
  Fix Released
Status in neutron source package in Jammy:
  Fix Released
Status in neutron source package in Kinetic:
  Fix Released

Bug description:
  [Impact]

  On a fresh devstack install with the q-dns service enable from the
  neutron devstack plugin, some features still don't work, e.g.:

  $ openstack subnet set private-subnet --dns-publish-fixed-ip
  BadRequestException: 400: Client Error for url: https://10.250.8.102:9696/v2.0/subnets/9f50c79e-6396-4c5b-be92-f64aa0f25beb, Unrecognized attribute(s) 'dns_publish_fixed_ip'

  $ openstack port create p1 --network private --dns-name p1 --dns-domain a.b.
  BadRequestException: 400: Client Error for url: https://10.250.8.102:9696/v2.0/ports, Unrecognized attribute(s) 'dns_domain'

  The reason seems to be that
  https://review.opendev.org/c/openstack/neutron/+/686343/31/neutron/common/ovn/extensions.py
  only added dns_domain_keywords, but not e.g. dns_domain_ports as
  supported by OVN

  [Test Case]

  Create a normal OpenStack neutron test environment to see if we can
  successfully run the following commands:

  openstack subnet set private_subnet --dns-publish-fixed-ip
  openstack port create p1 --network private --dns-name p1 --dns-domain a.b.

  [Regression Potential]

  The fix has merged into the upstream stable/xena branch [1], here's
  just SRU into the 19.1.0 branch of UCA xena (the fix is already in
  20.0.0 so it's already in jammy and kinetic and focal-yoga), so it is
  a clean backport and might be helpful for deployments migrating to
  OVN.

  [1] https://review.opendev.org/c/openstack/neutron/+/838650

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