You can remove an Expressway node from a resource in Control Hub, but this works best for nodes that no longer exist on the premises (due to a hardware failure, for example). Even if you remove the node from the clustering setup on the Expressway, the node still contains its hybrid services setup, continues to connect, and appears as part of the same resource in Control Hub. Use this procedure to fully remove the node.
Put the node in to maintenance mode:
Remove the node from the cluster:
Clear the clustering and hybrid services configuration from the isolated node:
Remove the node in Control Hub:
For nodes that still exist, they return to the Control Hub list when the next heartbeat connection is established.