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Werk #6603: CRE: Fixed Check_MK service crash if a check plugin is unknown to the check context

ComponentChecks & Agents
TitleCRE: Fixed Check_MK service crash if a check plugin is unknown to the check context
Date2018-09-20 13:09:26
Checkmk EditionCheckmk Raw Edition (CRE)
Checkmk Version1.6.0b1,1.5.0p5
LevelTrivial Change
ClassBug Fix
CompatibilityCompatible - no manual interaction needed

A host has discovered a set of check plugin names which are triggered by the Check_MK service. If the agent type of this host changes without performing a rediscovery afterwards and the configuration changes are activated then there may be new or vanished check plugins which are unknown to the current check context. This leads to a KeyError of the Check_MK service.

Now if a check plugin is unknown to the current check context Check_MK ignores this check plugin. Aside from that the Check_MK Discovery service reports about vanished or unmonitored serices.