Ok                     => no problem.

Warning             => the element is running but in a degraded mode.

Critical               => not running.

Unknown            => no information is available.

FLAPPING              => its state changed often (by default, checks are made every five minutes, so its means that the X last checks results were different)

DOWNTIME           => the element has been flagged by a Shinken user as “under maintenance”

ACKNOWLEDGED   => the problem has been taken into consideration by a Shinken user

PARTIAL ACKNOWLEDGED       => the problem has been taken into consideration by a Shinken user