Maintenance Mode Configuration — ownCloud Server ...
cloudash64.net › enable_maintenancemaintenance:mode locks the sessions of logged-in users and prevents new logins. This is the mode to use for upgrades. You must run occ as the HTTP user, like this example on Ubuntu Linux: $ sudo -u www-data php occ maintenance:mode --on. You may also put your server into this mode by editing config/config.php. Change "maintenance" => false to ...