Werk #19461: Fix Proxmox VE node allocation crash on missing CPU or memory capacity data

Component

Checks & agents

Title

Fix Proxmox VE node allocation crash on missing CPU or memory capacity data

Date

May 6, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p6	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Previously, the Proxmox VE CPU Allocation and Proxmox VE Memory Allocation services could crash with a KeyError when the Proxmox VE API did not include maxcpu or maxmem in the node status response — for example on offline nodes or nodes with incomplete API responses.

Both services now handle missing capacity data gracefully: if maxcpu or maxmem are absent from the node data, the allocation sections are not emitted and no service is discovered for that node.

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