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Werk #22142: omd update: Abort on a damaged skeleton hierarchy

Component Site management
Title omd update: Abort on a damaged skeleton hierarchy
Date Aug 12, 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

Before touching the site, omd update now verifies that the skeleton hierarchies of both the source and the target version contain their etc and var directories, and that the hierarchies can be read in full. It aborts if that is not the case:

ERROR: The skeleton hierarchy '/omd/versions/2.4.0p1.cee/skel' is incomplete
(missing: etc, var). It looks damaged, updating with it could corrupt the site.
The update was aborted.
ERROR: Cannot read the skeleton hierarchy '/omd/versions/2.4.0p1.cee/skel':
[Errno 13] Permission denied: '/omd/versions/2.4.0p1.cee/skel/etc'
Updating with it could corrupt the site. The update was aborted.

The update diffs the two hierarchies to decide which files of your site have to be created, updated or removed. If one of them is empty, truncated or only partly readable, the update concludes that the new version no longer ships the missing files and deletes them from the site. Aborting early leaves the site untouched instead.

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