Turns out that internally our external DB driver is MariaDB for a while now, but now latest MySQL needs a compatibility setting.

What I need to do: everywhere where we configure external DB, add MariaDB and add that:
Note that, if you already have a MySQL 8.0 instance running please configure it to use the mysql_native_password plugin for authentication. Avout how to configure it please refer to the MySQL doumentation, if the MySQL instance is running on OpenShift Plataform and the image is provided by Red Hat, this can be done by setting the following environment variabe:
 
MYSQL_DEFAULT_AUTHENTICATION_PLUGIN=mysql_native_password
After this change, the `mysql-user` table needs to be updated as well to reflect the plugin change.