Comment 6 for bug 1895822

The reason why I think I had the same issuse is the fact that when you check the mysqld.log in the job [1] you can see that all cloud services have issues using DB. After upgrade on my env the cloud more or less worked, but apparently there was a network issue, which in my case made redeploy after FFU fail 100% time on the Keystone check step.

[1] https://e453f1d8808c5b6bd184-223d8b88d73ea59070ac36b627fdc3bc.ssl.cf2.rackcdn.com/739457/27/check/tripleo-ci-centos-8-standalone-upgrade-ussuri/ad8724d/logs/undercloud/var/log/containers/mysql/mysqld.log