Werk #18703: Prevent aws_lambda_performance crash on missing metrics

Component

Checks & agents

Title

Prevent aws_lambda_performance crash on missing metrics

Date

Dec 10, 2025

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.5.0b1 Not yet released	Checkmk Cloud (CCE), Checkmk MSP (CME)
2.4.0p18 Not yet released	Checkmk Cloud (CCE), Checkmk MSP (CME)

The AWS Lambda Performance check crashed when expected CloudWatch metrics (Duration, Errors, and Throttles) were missing. This issue has been fixed, and the check now displays a message indicating which of these metrics are unavailable.

For missing metrics now “Item not found in monitoring data” is shown.

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