Werk #19857: kube_pod_status: don't crash when an older status is still cached

Component

Checks & agents

Title

kube_pod_status: don't crash when an older status is still cached

Date

Apr 23, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.6.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

After upgrading a Kubernetes-monitored site, the pod Status service could become UNKNOWN with a traceback ending in KeyError: 'OOMKilled' (or another status name). This happened when the persistent check state still remembered a pod status whose name is no longer in the set the check currently tracks.

The check now tolerates an unknown cached status instead of crashing; the affected pod simply continues with the currently observed status.

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