Scheduled restarts
Give a server a daily restart time and Cube cycles it for you, warning players first.
Setting a daily restart
On the Schedule plane of a server, set a local HH:MM time and save. Cube restarts that server every day at that time. Clear the field and save to turn it off. The schedule is stored with the server, so it survives restarts of Cube itself.
Player warnings
Before a scheduled restart, online players get an in-game countdown in chat at 60, 30, and 10 seconds so no one is caught mid-build.