Werk #19046: Fixed Nagios monitoring history

Component

Livestatus

Title

Fixed Nagios monitoring history

Date

Jan 20, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.6.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.5.0b1	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.4.0p20	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Due to some regressions in Checkmk 1.4.0 and 2.4.0, the monitoring history written by the Nagios core was slightly incorrect: Some lines were missing and some had an invalid format. This could affect the availability/SLA calculations in some edge cases.

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