You can enable students to use a series of open-source Linux GUI-based applications including MySQL Workbench using the following steps.

First under the Resources section for part configuration, turn on both MySQL and Linux Applications options:

Please see the section on Database on how to configure MySQL database.

When the student goes to their workspace, they should see the Database credential under Details as well in the file .my.cnf. Learners can launch their MySQL Workbench session by going to Actions>Applications>MySQL WB:

At this point MySQL Workbench be launched in a separate tab. If the preset connection tab says Vocareum MySQL - click to access the database:

Otherwise, exit, close tab and the app using Actions=>Applications=>Stop App:

Then End Lab and Start Lab and try again: