Werk #22083: REST API: report unknown hosts when creating a comment

Component

REST API

Title

REST API: report unknown hosts when creating a comment

Date

Jul 31, 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
2.5.0p11	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Creating a comment for a host that is not monitored made the REST API return an internal error and write a crash report, instead of telling you what was wrong. Affected are the endpoints "Create a host comment" and "Create a service comment", when the comment is addressed to a host name rather than to a query.

The same situation was already reported properly for the query based variant of these endpoints, which answers with "The query did not match any host".

The endpoints now answer with a 404 and the message "The requested host was not found".

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