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Werk #20057: Install Checkmk agent slideout registered agent on wrong site

Component Setup
Title Install Checkmk agent slideout registered agent on wrong site
Date Jul 7, 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
2.5.0p9 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

When adding a host whose "Monitored on site" attribute was inherited from its folder instead of being set explicitly on the host, the "Install Checkmk agent" slideout offered a registration command pointing at the central site. As a result the agent was registered on the wrong site.

The slideout, as well as the agent and SNMP connection tests on the host properties page, now use the effective monitoring site of the host, including values inherited from the folder.

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