Comment 2 for bug 1938987

And again in C8 train, this time in job periodic-tripleo-ci-centos-8-ovb-3ctlr_1comp-featureset001-train [1]:

  2022-09-01 11:05:11.692 23 ERROR keystone.server.flask.request_processing.middleware.auth_context pymysql.err.OperationalError: (1047, 'WSREP has not yet prepared node for application use')

[1] https://logserver.rdoproject.org/62/44662/6/check/periodic-tripleo-ci-centos-8-ovb-3ctlr_1comp-featureset001-train/5753657/logs/overcloud-controller-0/var/log/containers/keystone/keystone.log.txt.gz