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[Rodolfo Alonso <2087942@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

References:
* https://etherpad.opendev.org/p/oct2024-ptg-neutron
* https://etherpad.opendev.org/p/neutron-eventlet-deprecation

Remove the import and usage of the eventlet library in the OVN agent.

============================================================

The only difference with the OVN metadata agent is that is spawned using ``oslo_service.launch`` (see https://bugs.launchpad.net/neutron/+bug/2087941). ``oslo.service`` is a framework library used by Neutron to run the agent processes. This framework is based in ``eventlet`` to, for example, handle the process signals or create a pipe to watch the child processes. The ``oslo_service`` library should be upgraded to remove the ``eventlet`` dependency:
* oslo.service: Propose a plan to Remove Eventlet: https://review.opendev.org/c/openstack/oslo-specs/+/927503

An alternative could be to start the agent in the same way the OVN
metadata agent is started, without using ``oslo_service.launch``.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2087942

Title:
   [eventlet-deprecation] Remove the usage of eventlet in the OVN agent

Status in neutron:
  New

Bug description:
  References:
  * https://etherpad.opendev.org/p/oct2024-ptg-neutron
  * https://etherpad.opendev.org/p/neutron-eventlet-deprecation

  Remove the import and usage of the eventlet library in the OVN agent.

  ============================================================

  The only difference with the OVN metadata agent is that is spawned using ``oslo_service.launch`` (see https://bugs.launchpad.net/neutron/+bug/2087941). ``oslo.service`` is a framework library used by Neutron to run the agent processes. This framework is based in ``eventlet`` to, for example, handle the process signals or create a pipe to watch the child processes. The ``oslo_service`` library should be upgraded to remove the ``eventlet`` dependency:
  * oslo.service: Propose a plan to Remove Eventlet: https://review.opendev.org/c/openstack/oslo-specs/+/927503

  An alternative could be to start the agent in the same way the OVN
  metadata agent is started, without using ``oslo_service.launch``.

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