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[Rodolfo Alonso <1953510@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1952550 ***
    https://bugs.launchpad.net/bugs/1952550

Hello Bartosz:

To change the system ID to UUID format is not a solution but the only
way OVS system-id can be configured. If this ID was incorrectly set
initially, that was a configuration issue. OVS does not fail when this
ID has not UUID format but it should. And now the OVS metadata agent
will exit with an exception.

As reported in this BZ, you need to stop the affected ovn-controllers,
delete the Chassis and Chassis_Private registers, delete the OVN agents
in Neutron (if present) and restart the ovn-controller again.

I'll mark this bug as a duplicate of LP#1952550.

Regards.

** This bug has been marked a duplicate of bug 1952550
   [OVN] neutron_ovn_metadata_agent retrying on UUID errors infinitely

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https://bugs.launchpad.net/bugs/1953510

Title:
  neutron_ovn_metadata_agent doesn`t work after reconnect to new OVN
  Southbound leader DB

Status in neutron:
  New

Bug description:
  After restart of current OVN SB_DB leader, neutron_ovn_metadata_agent reconnects to new SB_DB leader, according agent`s logs.
  But then, during spawn of new instances, they don`t obtain metadata from nova.
  Metadata agent doesn`t create any ovn namespaces and related ports, there are no any errors or other info in agent`s log.
  As WA, this issue can be resolved by restarting of neutron_ovn_metadata_agent.

  How to reproduce it:
  Restart OVN SB_DB leader and try to spawn new openstack instance.

  Environment:
  Openstack is deployed by kolla-ansible (v12.2.0)
  Docker - 20.10.8
  Container types - ubuntu/binary

  Version:
  * OS: Ubuntu 20.04.3 LTS
  * Kernel: 5.4.0-89-generic
  * Openstack version: wallaby
  * Neutron: 18.1.1
  * OVS: 2.15.0
  * OVN: 20.12.0

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