[Bug 1998781] Re: yoga: neutron-ovn-metadata-agent unable to communicate via ovn-relay

[Frode Nordahl]

Using DNS name for a passive connection works before this commit:
https://github.com/openvswitch/ovs/commit/08e9e5337383afd16a225334cb2549a027280537

Which was backported to the 2.16 branch as
https://github.com/openvswitch/ovs/commit/1570924c3f83851f39f56e3363050b70ba1aafb0
and has been there since v2.16.3

The commit also appears to have been backported as far back as v2.13.7

** Changed in: openvswitch (Ubuntu)
       Status: Confirmed => Triaged

** Summary changed:

- yoga: neutron-ovn-metadata-agent unable to communicate via ovn-relay
+ regression: ovsdb-server drops connection when using DNS name to configure passive listener

** Also affects: cloud-archive
   Importance: Undecided
       Status: New

** Also affects: openvswitch (Ubuntu Kinetic)
   Importance: Undecided
       Status: New

** Also affects: openvswitch (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Also affects: openvswitch (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Also affects: openvswitch (Ubuntu Lunar)
   Importance: High
       Status: Triaged

** Also affects: cloud-archive/zed
   Importance: Undecided
       Status: New

** Also affects: cloud-archive/yoga
   Importance: Undecided
       Status: New

** Also affects: cloud-archive/xena
   Importance: Undecided
       Status: New

** Also affects: cloud-archive/ussuri
   Importance: Undecided
       Status: New

** Also affects: cloud-archive/wallaby
   Importance: Undecided
       Status: New

** Summary changed:

- regression: ovsdb-server drops connection when using DNS name to configure passive listener
+ regression: ovsdb-server drops connections when using DNS name to configure passive listener

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https://bugs.launchpad.net/bugs/1998781

Title:
  regression: ovsdb-server drops connections when using DNS name to
  configure passive listener

Status in Ubuntu Cloud Archive:
  New
Status in Ubuntu Cloud Archive ussuri series:
  New
Status in Ubuntu Cloud Archive wallaby series:
  New
Status in Ubuntu Cloud Archive xena series:
  New
Status in Ubuntu Cloud Archive yoga series:
  New
Status in Ubuntu Cloud Archive zed series:
  New
Status in Sunbeam Snap:
  Fix Released
Status in openvswitch package in Ubuntu:
  Triaged
Status in openvswitch source package in Focal:
  New
Status in openvswitch source package in Jammy:
  New
Status in openvswitch source package in Kinetic:
  New
Status in openvswitch source package in Lunar:
  Triaged

Bug description:
  For a Yoga base deployment (OVN: 22.03, OVS: 2.17.2) the neutron-ovn-
  metadata-agent continually reconnects to the ovn-central services via
  ovn-relay - the inactivity probe timeout is set to 60 seconds in OVN
  central and on the client side so I think the issue is that the ovn-
  relay is probing with a 5 second timeout and then resetting
  connections.

  ovn-relay log:

  2022-12-05T11:19:54.403Z|21688|reconnect|DBG|ssl:ovn-central-0.ovn-central-endpoints.openstack.svc.cluster.local:6642: idle 5003 ms, sending inactivity probe
  2022-12-05T11:19:54.403Z|21689|reconnect|DBG|ssl:ovn-central-0.ovn-central-endpoints.openstack.svc.cluster.local:6642: entering IDLE
  2022-12-05T11:19:54.403Z|21690|jsonrpc|DBG|ssl:ovn-central-0.ovn-central-endpoints.openstack.svc.cluster.local:6642: send request, method="echo", params=[], id="echo"

  by passing the ovn-relay and communicating directly with the SB db
  server worked around this issue.

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