Werk #19444: Kubernetes: handle missing creationTimestamp gracefully

Component	Checks & agents
Title	Kubernetes: handle missing creationTimestamp gracefully
Date	Mar 20, 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 Ultimate MT 2.5.0b2 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.4.0p26 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Kubernetes 1.34 introduced the possibility for creationTimestamp to be absent on objects. Previously, Checkmk's Kubernetes checks would crash or produce incorrect output in this case.

The Info checks for Nodes, Deployments, DaemonSets, StatefulSets, Namespaces, and CronJobs now display "Age: unknown" when the creation timestamp is not present, instead of failing.

No user action is required to make use of this fix.

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