Werk #13523: Validate configured rules when updating configuration

Component Setup
Title Validate configured rules when updating configuration
Date Jan 10, 2022
Level Trivial Change
Class New Feature
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.1.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

The Checkmk update procedure (cmk-update-config) now validates most of the configured rules and logs "WARNING: Invalid rule configuration detected" in case of an error. If you encounter such errors, your configuration contains rules that need to be corrected. We recommend to open the affected rules in the GUI. Upon attempting to save them, any problematic field will be highlighted.

Invalid rule values can for example originate from invalid regular expressions, which were unfortunately still allowed in Python 2 but are forbidden in Python 3, see also https://checkmk.com/de/werk/11974.

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