Last Modified: Dec 29, 2025
Affected Product(s):
F5OS F5OS-C, Install/Upgrade
Known Affected Versions:
F5OS-C 1.8.2
Opened: Dec 14, 2025 Severity: 1-Blocking
When performing a rolling System controller upgrade from 1.7.1 to 1.8.x it is possible on of the upgrading System Controllers does not complete its upgrade and show system image displays "in-progress" for that system controllers upgrade status indefinitely.
Dataplane should continue to function at a reduced rate. However, the System Controllers will not form a ConfD HA pair until both System Controllers are running the same System Controller version and management communication may be lost with the upgrading controller.
Problem is known to occur on a fully loaded CX1610 chassis.
Perform a manual switch of both service and os versions to match the peer System Controller. Example: echo "switch cc_os <iso-version> " | nc -U /var/sw-mgmt.unix echo "switch cc_serv <iso-version> no_restart" | nc -U /var/sw-mgmt.unix where <iso-version> is the version the peer System Controller is currently running. Then reboot the system reboot the system controller
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