对纲要升级失败的问题进行查错

If the schema upgrade fails, the database version check and all the other spacewalk services do not start. Run mgradm start on the container host for more information and hints how to proceed.

To access a shell inside the Server container run mgrctl term on the container host.

也可以直接在容器中运行版本检查：

systemctl status uyuni-check-database.service

或

journalctl -u uyuni-check-database.service

These commands print debug information if you do not want to run the more general mgradm command.