Werk #19580: Ensure procps (pgrep) is always installed

Component	Linux distributions
Title	Ensure procps (pgrep) is always installed
Date	Jul 20, 2026
Level	Prominent Change
Class	Bug Fix
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 2.5.0p10 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.4.0p35 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.3.0p49 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Checkmk relies on the pgrep command in several places, for example when managing site processes during omd operations and in the bundled Nagios and NPCD init scripts. pgrep is provided by the procps package.

Until now this package was declared as an explicit dependency only for the RHEL and AlmaLinux based packages. On SLES it happened to be present incidentally, and on Debian and Ubuntu it was only pulled in transitively through Apache. On a minimal system where procps was not installed, these operations could fail.

procps is now declared as an explicit package dependency for all supported distributions, so it is always installed together with Checkmk.

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