I am looking for a way to determine which device in a device group (cluster) of F5 load balancers (LTMs) is "active" via the F5 iControl REST API. I have perused the entirety of the /sys endpoint where I would expect such information to be contained to no avail.
Thanks!
Found the answer, documenting it here in case anyone else is curious.
In the 11.5.3 version of the REST API the state of a given F5 in a device group can be found in the /cm/device endpoint in the 'failoverState' property which will be either "active" or "standby" in typical operation.