Werk #22458: Apache log rotation no longer reloads Apache

Component

Site management

Title

Apache log rotation no longer reloads Apache

Date

Oct 2, 2026

Level

Trivial Change

Class

New Feature

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p16 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

The daily log rotation at midnight site time reloaded the Apache of the site after rotating its logs. The reload starts all GUI worker processes again. On hosts with many sites, all sites did this at the same time, which caused a CPU peak every night.

The Apache logs are now rotated with copytruncate. Apache keeps running and continues writing to the same log files.

As a result, memory that the Apache worker processes use for the GUI is no longer released every night. It is released when Apache is restarted or reloaded, for example by omd reload apache.

To the list of all Werks