Werk #18968: Cleanup discovered host labels upon host removal

Component

Checks & agents

Title

Cleanup discovered host labels upon host removal

Date

Dec 3, 2025

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.3.0p42	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

When a host is removed from the monitoring configuration, the corresponding file in var/check_mk/discovered_host_labels is now automatically cleaned up as well. Previously, these files would remain on disk even after the host was removed, leading to unnecessary disk usage.

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