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[OpenStack Infra <1952550@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/c/openstack/neutron/+/819634
Committed: https://opendev.org/openstack/neutron/commit/68f3e21034461ffa1525d2680b20ba2ecbb53dd4
Submitter: "Zuul (22348)"
Branch:    master

commit 68f3e21034461ffa1525d2680b20ba2ecbb53dd4
Author: Rodolfo Alonso Hernandez <ralonsoh@xxxxxxxxxx>
Date:   Mon Nov 29 12:05:42 2021 +0000

    [OVN] Chassis name (OVS system-id) must be a UUID formatted string
    
    The OVS system-id must be a UUID formated string. If not, the OVN
    metadata agent will log the error and exit.
    
    Closes-Bug: #1952550
    Change-Id: Iad2b07f6e40dcbf690889d3b69bc00bb2ed0c05c


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

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https://bugs.launchpad.net/bugs/1952550

Title:
  [OVN] neutron_ovn_metadata_agent retrying on UUID errors infinitely

Status in neutron:
  Fix Released

Bug description:
  *Descrption:
    ** We observed neutron_ovn_metadata_agent was stuck when connection ovn_sb_db is reset
    ** After investigation, we found that MetadataAgent.register_metadata_agent keeps retrying infinitely due to an unrecoverable error in this line: chassis_id = uuid.UUID(self._get_own_chassis_name()). This block the thread for RowEventHandler.notify_loop.
    ** The neutron is deployed by kolla ansible, where chassis name returned here is the hostname of the compute nodes, and it is not recognized as a valid UUID.

  * Version:
    ** OpenStack Xena
    ** Ubuntu focal 20.04
    ** Kolla Ansible

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