Werk #22926: Kubernetes CronJob: no crash on future times

Component

Checks & agents

Title

Kubernetes CronJob: no crash on future times

Date

Nov 2, 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
2.5.0p19 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

If the Kubernetes cluster reported the start time of a pending or running job, the last successful completion or the last schedule of a CronJob a few seconds after the current time of the Checkmk server, the CronJob Status service crashed with ValueError: Cannot render negative timespan.

The service now reports such a timestamp as being in the future and asks you to check the system time, like the other Kubernetes checks.

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