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Werk #18708: agent_kube: relax annotation value character restriction

Component Checks & agents
Title agent_kube: relax annotation value character restriction
Date Oct 1, 2025
Level Trivial Change
Class New Feature
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.5.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p14 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

All characters are now allowed in annotation values except ':' (colon). Annotations containing this character or exceeding 256 characters in length will be ignored. Prior to this werk, annotation values were subject to overly strict validation rules, which limited their usability.

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