Werk #13234: Fix validation of label keys in ruleset conditions

Component

User interface

Title

Fix validation of label keys in ruleset conditions

Date

Sep 6, 2021

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.1.0b1	Checkmk Community, Checkmk Pro, Checkmk Ultimate MT
2.0.0p10	Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

If several keys were used for label conditions in rulesets, e.g. "foo:bar" and "foo:baz", the first label was silently overwritten by the last label.

You will now get an error message if keys are used twice.