It's possible to set maintenance mode on a non-premium instance using the console
Our handbook page mentions that Maintenance mode should only be available to premium users. However, for non-premium users, it's still possible to enable maintenance mode
by using the third method described in the handbook - the rails console. This is because a direct ApplicationSettings update forgoes the validations (currently happening in controllers).
Proposal
Remove the Rails console Application Settings update commands from the docs.
Edited by Michael Kozono