Last Modified: Dec 12, 2025
Affected Product(s):
F5OS F5OS-C, Install/Upgrade
Known Affected Versions:
F5OS-C 1.8.1, F5OS-C 1.8.2
Opened: Aug 05, 2025 Severity: 3-Major
During or shortly after a controller firmware update, system health can display an error indicating the controller’s hardware alert handler failed to initialize. The health view may suggest a fan or power controller monitoring failure even though all components later report Healthy/Ok. The error may persist in health/status after the firmware update completes, creating the impression of a controller health problem.
Misleading controller health alarms may remain visible after updates complete, causing confusion and unnecessary investigation. Firmware updates themselves complete successfully.
Occurs when controller firmware updates, controller failover, or a restart of the diagnostics service temporarily interrupts hardware health monitoring at startup.
- After the firmware update, confirm that fans/power controllers report Healthy/Ok in system health. - If an initialization error persists, restart the diagnostics service or perform a controller failover to clear the stale alert.
None