Werk #18560: apc_symmetra: Fix vanished temperature sensor services
| Component | Checks & agents | ||||
| Title | apc_symmetra: Fix vanished temperature sensor services | ||||
| Date | Jun 12, 2026 | ||||
| Level | Trivial Change | ||||
| Class | Bug Fix | ||||
| Compatibility | Compatible - no manual interaction needed | ||||
| Checkmk versions & editions |
|
Previously, on devices that report external temperature sensors but no UPS battery data — such as the APC NetBotz 250 — all Temperature services of the check plugin apc_symmetra_temp vanished after an update to Checkmk 2.5, and existing services went to UNKNOWN.
This was caused by an internal rework of the plugin: the external sensor data was only parsed if the device also reported UPS battery data, which environmental monitoring appliances do not.
The external sensor temperatures are now parsed independently of the battery data again, as in Checkmk 2.4. The affected services are found again by the next service discovery; if you have not removed the vanished services, they recover automatically.