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Werk #20188: Fix Proxmox VE Memory Usage rejecting levels above 100%

Component Setup
Title Fix Proxmox VE Memory Usage rejecting levels above 100%
Date Aug 28, 2026
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.4.0p37
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Previously, the warning and critical levels for the ruleset Proxmox VE memory percentage used (service Proxmox VE Memory Usage) could not be set above 101%, because the input fields enforced a hardcoded maximum value. Since Proxmox VE 9, memory usage can legitimately be reported above 100%, so this limit made it impossible to configure meaningful levels for the affected VMs. Saving such a rule failed with an error like: 115.0 is too high. The maximum allowed value is 101.0.

This has been fixed. The warning and critical levels now accept any value above 0%.

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