Bug ID 2219897: PSU alarms getting cleared during controller failover

Last Modified: Aug 19, 2026

Affected Product(s):
F5OS F5OS-C(all modules)

Fixed In:
F5OS-C 1.8.2-HR1, F5OS v2.0.0

Opened: Feb 04, 2026

Severity: 3-Major

Symptoms

PSU fault alarms were not triggered during controller failover.

Impact

When PSU health status is displayed as faulty, the corresponding alarm notification does not appear.

Conditions

When PSU alarms are present in the system and are followed by a controller failover.

Workaround

None.

Fix Information

Updated diag-agent service so that any psu alarms won't be cleared by standby controller boot up.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips