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 -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). 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. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1852846/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp