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Werk #19064: Log rotation for internal services

Component Core & setup
Title Log rotation for internal services
Date Feb 9, 2026
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 Cloud, Checkmk Ultimate MT
2.4.0p22 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

When logrotate rotated log files still used by internal services (e.g. the automation-helper), these services continued to write log messages to the old file. Effectively, this left the new file empty.

With this change, the services reopen the log file and will write to the new log file.

There is no manual action required to benefit from this fix.

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