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Reviewed:  https://review.opendev.org/c/openstack/neutron/+/929604
Committed: https://opendev.org/openstack/neutron/commit/7b7f8d986a4f818d289149c6960c9eb8b62b432d
Submitter: "Zuul (22348)"
Branch:    master

commit 7b7f8d986a4f818d289149c6960c9eb8b62b432d
Author: Rodolfo Alonso Hernandez <ralonsoh@xxxxxxxxxx>
Date:   Sat Sep 14 16:17:18 2024 +0000

    [OVN] Check metadata HA proxy configuration before restart
    
    Since [1], the OVN Metadata agent has support for IPv6. If the agent
    is updated, the HA proxy instances need to be reconfigured and
    restarted. However, that needs to be done only once; the next time
    the OVN agent is restarted, if the HA proxy instances are updated
    (have IPv6 support), they won't be restarted.
    
    [1]https://review.opendev.org/c/openstack/neutron/+/894026
    
    Closes-Bug: #2079996
    Change-Id: Id0f678c7ffe162df42e18dfebb97dce677fc79fc


** Changed in: neutron
       Status: In Progress => Fix Released

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Title:
  [OVN] OVN metadata agent check to restart the HAProxy container

Status in neutron:
  Fix Released

Bug description:
  Since [1], we restart the HAProxy process of each network (datapath)
  in order to "honor any potential changes in their configuration." [2].

  This process could slow down the OVN Metadata agent restart and could
  potentially interfere with a VM boot-up if the HAProxy process is
  restarted in the middle.

  This bug proposes an optimization that checks the IPv6 support of the
  HAProxy running process to decide to restart it or not.

  [1]https://github.com/openstack/neutron/commit/d9c8731af36d4eb53d9266733fec24659f2dc5a8
  [2]https://github.com/openstack/neutron/commit/d9c8731af36d4eb53d9266733fec24659f2dc5a8#diff-95903c989a1d043a90abe006cedd7ec20bd7a36855c3219cd74580cfa125c82fR349-R351

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