Original Publication Date: 08/08/2013
Updated Date: 11/15/2013
The HA groups feature is designed to assign the active host without user intervention. Therefore, the operator of a BIG-IP host should not attempt to manually control HA operation by using the Force to Standby feature. As a result, the HA group feature may override the active/standby state and may reassign the active host automatically.
If a manual change of the active state is required, F5 recommends that you disable the HA group feature, or that you take the active host offline temporarily.
To take a host offline, perform one of the following procedures:
Taking a host offline using the BIG-IP Configuration utility
Taking a host offline using the Traffic Management Shell (tmsh) utility