Explore the latest product updates and best practices at our hybrid Checkmk Conference #12 from June 16-18, 2026 – Register here

Werk #18132: Fix timeperiod validation for imported calendars

Component Setup
Title Fix timeperiod validation for imported calendars
Date Aug 27, 2025
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.5.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.4.0p11 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

When updating Checkmk, the config validation would fail with a message similar to the following when validating valid time periods created by importing a calendar:

The following mk files had issues during the validation:

    etc/check_mk/conf.d/wato/timeperiods.mk..................... Failed
    Invalid timeperiods:
    ['<time_period_name>: Missing time periods']

With this Werk, we adapt the validation to no longer complain for these valid time periods

To the list of all Werks