This plugin allows to maintenance your server for solve problems, construct new building without being disturbed by the players, ... When you enabled all players no-op are kick and can not return until you have disabled the maintenance.
For more details, check the wiki : https://bitbucket.org/Dean79000/plugin-basicmaintenance
Feedback / bug report is also appreciated : https://bitbucket.org/Dean79000/plugin-basicmaintenance/issues
Changelog : Moved here : https:bitbucket.org/Dean79000/plugin-basicmaintenance/wiki/Changelog