Werk #19344: Metric backend: cap maximum memory limit at 90%

Component

Setup

Title

Metric backend: cap maximum memory limit at 90%

Date

May 5, 2026

Level

Trivial Change

Class

New Feature

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.6.0b1 Not yet released	Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p2	Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

The metric backend's Memory limit setting can no longer be configured above 90%. The previous upper bound of 200% allowed configurations that could starve the rest of the monitoring stack of memory on the same host.

If you currently have this value set above 90% please edit the rule and set the value within the supported range.

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