Issue Description
1. when you are installing the singlecloud system, it is failed to configure the witness server because of login the database in SQL server fail
2. when you login to the user's VM, it failed.
3. we can't open the database studio in the SQL server.
Handling Process
please check the specific steps in the attachment.
Root Cause
the serial number of the database is expired, we need to update it.
Suggestions
we should do the inspection for the system periodically.