Comment 5 for bug 1887589

Hi Yvonne,
From the log, openstack fail to schedule the VM due to cannot communicate with mariadb. There is patch https://review.opendev.org/739046 to fix mariadb run issue. The code is merged at 7/10, which is after your test build which is at 7/9。
Please help confirm whether the issue still exist with latest build.

Here is error message in nova conductor:
2020-07-10T12:23:58.541000978Z stdout F 2020-07-10 12:23:58.538 1 WARNING oslo_db.sqlalchemy.exc_filters [-] DBAPIError exception wrapped.: pymysql.err.InternalError: (1047, 'WSREP has not yet prepared node for application use')
2020-07-10T12:23:58.546514318Z stdout F 2020-07-10 12:23:58.542 1 ERROR nova.servicegroup.drivers.db [-] Unexpected error while reporting service status: oslo_db.exception.DBError: (pymysql.err.InternalError) (1047, 'WSREP has not yet prepared node for application use')