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Werk #19355: Metric backend: fix stale configuration after site rename or copy

Component Metrics system
Title Metric backend: fix stale configuration after site rename or copy
Date Jun 10, 2026
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
3.0.0b1
Not yet released
Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p7
Not yet released
Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

The metric backend configuration file etc/check_mk/metric_backend.json contained the site name (in the TLS server hostname and the mTLS certificate paths). Since omd mv and omd cp do not update this file, connections to the metric backend failed after renaming or copying a site.

These values are now derived from the site instead of being stored. Existing configuration files are read transparently; no manual action is required.

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