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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Well there are obviously problems on the controllers because there are
DB connection errors in the logs.

You could try using --os-compute-api-version 2.34 to avoid the RPC
timeout but that kind of error is generally symptomatic of bigger
problems, like failures connecting to the conductor or scheduler
service, or the scheduler taking too long, or the DB being down, etc.

This isn't a bug, it's a support request so I'm going to invalidate it.

** Changed in: nova
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1852846

Title:
  Unexpected API Error

Status in OpenStack Compute (nova):
  Invalid

Bug description:
  Hello,

  I cannot live migrate to another new compute because of the following error: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
  <class 'oslo_messaging.exceptions.MessagingTimeout'> (HTTP 500) (Request-ID: req-2f4a47c3-e46f-405b-bb5c-56796732a04d)

  Please help me to fix it, many thanks.

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