Werk #13306: mk_docker.py: Improve error reporting when executed asynchronously

Komponente Checks und Agenten
Titel mk_docker.py: Improve error reporting when executed asynchronously
Datum 21.09.2021
Checkmk-Editon Checkmk Raw (CRE)
Checkmk-Version 2.0.0p12 2.1.0i1
Level Kleine Änderung
Klasse Bugfix
Kompatibilität Kompatibel - benötigt kein manuelles Eingreifen

The agent plugin is expected to transport some errors to the Checkmk server to make them visible on the service discovery page. E.g. when the docker python is missing on the target system, this should be displayed to the user.

However, when the plugin is executed in asynchronous mode, the error reporting of the plugin told the agent to drop the error messages in previous versions.

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