Werk #18568: Jolokia: handle missing metrics in agent output

Component

Checks & agents

Title

Jolokia: handle missing metrics in agent output

Date

Sep 10, 2025

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.5.0b1 Not yet released	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.4.0p12 Not yet released	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.3.0p37 Not yet released	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

There is no guarantee that Jolokia metrics will be found in the agent output. With the prior implementation, this would lead to a crash report if any of the metrics are missing.

With this fix, we are now handling the different cases. If at least one metric is present, the service will be considered OK. If no metrics are present in the data, the service will be considered UNKNOWN.

No user intervention is needed to get the benefit of this fix.

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