In Step 6 of the Project Config Environment Setup, it is suggested to disable allowAdminChanges so that changes aren't lost unexpectedly on production environments. I maintain a Craft CMS site which occasionally needs to temporarily enter maintenance mode during upgrades to the CraftCMS and/or other integrated systems with the CraftCMS. Our team uses Craft's isSystemLive configuration to enable/disable our maintenance mode pages.
isSystemLive is a setting hidden in the Control Panel when
allowAdminChanges is set to
true, how may I temporarily change
isSystemLive during system upgrades?