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[Rodolfo Alonso <2036607@xxxxxxxxxxxxxxxxxx>]

** Changed in: neutron
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2036607

Title:
  [OVN] The API worker fails during "post_fork_initialize" call

Status in neutron:
  Fix Released

Bug description:
  Bugzilla reference:
  https://bugzilla.redhat.com/show_bug.cgi?id=2233797

  This issue has been reproduced using the Tobiko framework. The test,
  that is executed several times, is rebooting the controllers and thus
  the Neutron API. Randomly, one Neutron API worker fails during the
  event method execution "post_fork_initialize", during the
  "_setup_hash_ring" call [1].

  Regardless of the result of the method "post_fork_initialize", the API
  worker starts. But in this case there are some methods (mainly related
  to the OVN agents) that are not patched and thus the result of the API
  calls ("agent show", "agent list", etc) is wrong.

  This bug proposes:
  * To properly handle any possible error in the "_setup_hash_ring" call.
  * To log a message at the end of the "post_fork_initialize" method to check that this event method has finished properly.
  * To catch any possible error during the "post_fork_initialize" execution and if this error is not retried, fail and exit.

  [1]https://paste.opendev.org/show/bqzDPR5TukLq9d1GIcnz/

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