Werk #18760: Deleted OpenTelemetry collector configurations no longer affect the update
| Component | Telemetry | ||
| Title | Deleted OpenTelemetry collector configurations no longer affect the update | ||
| Date | Aug 12, 2026 | ||
| Level | Trivial Change | ||
| Class | Bug Fix | ||
| Compatibility | Compatible - no manual interaction needed | ||
| Checkmk versions & editions |
|
Sites that had set up the experimental OpenTelemetry integration in Checkmk 2.4 and then deleted that configuration again could still run into the incompatible-configuration handling described in #19133 when updating.
The update reported an invalid OpenTelemetry collector configuration and, depending on the selected conflict mode, either asked whether to continue or aborted the update altogether.
The reason was that deleting the last entry in the user interface empties the configuration file but keeps the file itself in place. The update only checked whether that file existed, so a leftover empty file was mistaken for a remaining configuration.
The check now looks at the actual contents of the configuration file. A configuration that was deleted before the update no longer has any effect on it.