Werk #22608: Kubernetes: no crash on future conditions

Component

Checks & agents

Title

Kubernetes: no crash on future conditions

Date

Oct 6, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p16 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p38 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

If the clock of a Kubernetes cluster ran ahead of the clock of the Checkmk server, the Condition service of a pod could crash with ValueError: Cannot render negative timespan while a condition was in an unexpected state, because the condition appeared to have changed in the future.

The affected condition now goes to UNKNOWN, states how far its last transition lies in the future and asks you to check the system time. The other conditions are reported as before.

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