When a Jenkins admin creates a new custom system log in the Web UI, he gets a Web form with "Level.ALL" logging level and empty Logger specification. If the admin occasionally saves the configuration, it leads to logging of ALL log entries in the system.

Such behavior easily kills large Jenkins instances. In order to avoid it, we need:

• Form validation and warning in the case of such setting
• Ideally: Additional confirmation page to ensure the admin knows what he is doing
• Nice2Have: Administrative monitor for such custom logger settings