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Werk #19260: Show correct "installed size" during debian installation

Component Site management
Title Show correct "installed size" during debian installation
Date Oct 13, 2026
Level Trivial 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
2.5.0p16
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Debian packages built for Checkmk now declare the Installed-Size field in their control file. Previously the field was missing, so apt reported "After this operation, 0 B of additional disk space will be used" when installing Checkmk, which is not true.

apt now shows the actual disk space a package needs before you install it. This applies to the Checkmk packages and to the Linux agent .deb packages shipped with Checkmk. Agent packages built by the Agent Bakery already included this field.

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