Bug ID 709544: VCMP guests in HA configuration become Active/Active during upgrade

Last Modified: May 07, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP Install/Upgrade, TMOS, vCMP(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5

Fixed In:
14.1.0, 14.0.0, 12.1.4.1

Opened: Mar 09, 2018
Severity: 3-Major

Symptoms

When devices in a Device Service Cluster (DSC) are upgraded, multiple devices might become Active simultaneously. During upgrade, the process erroneously clears the management-ip during reboot, and then synchronizes to other members of the DSC. If the system is not performing an upgrade, the error is repaired as the device starts up, and has no visible effect. If an upgrade is being performed, the management-ip cannot be repaired, and the DSC members lose contact with each other, so they all become Active.

Impact

When multiple devices become Active simultaneously, traffic is disrupted.

Conditions

-- Running on VIPRION chassis systems, either natively, or as a vCMP guest. -- Upgrading from any affected versions (TMOS v12.1.3, TMOS v13.0.0, TMOS v13.0.1, TMOS v13.1.0), to any other version.

Workaround

There is no workaround other than to remain in Active/Active state until upgrade is complete on all chassis in the DSC are finished. See K43990943: VIPRION systems configured for high availability may become active-active during the upgrade process :: https://support.f5.com/csp/article/K43990943 for more information on how to mitigate this issue.

Fix Information

The erroneous management-ip change is not made, and the HA failover mechanism operates correctly across upgrade.

Behavior Change