Customer contacted us with some issue with mariadb server, which starts from version (10.4.13), previous (10.4.12) version is running without any issue.
The problem is that bifrost tool uses ironic-dbsync create_schema which fails to oslo_db.exception.DBConnectionError.
We are tracking the issue with more details in this bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1854637
The bug must have something with the version rebase from 10.4.12 to 10.4.13.
Fedora steps to reproduce this:
1) dnf install git
2) dnf install @virtualization
3) systemctl start libvirtd
4) git clone https://opendev.org/openstack/bifrost.git
5) cd bifrost/
6) ./bifrost-cli install
If I can help you with anything else, let me know.