A critical Linux kernel security hole needs fixing and this requires restarting all Linux hosts.

Please, also restart your personal Linux workstations when it is convenient, but better sooner than later. 

Melkki will be restarted at 12:05.

Melkinpaasi will be restarted at 12:15.

Melkinkari will be restarted at 12:25.

Users web server will be restarted at 12:35.

Staff will be restarted at 12:45.

All Ukko cluster nodes will be restarted between 14:15 and 16:00.