Removing an Identity Server from a configuration disassociates Identity Server from the cluster configuration. The configuration, however, remains intact and can be reassigned later or assigned to another server.
Click Devices > Identity Servers.
Select the server, then click Stop. Wait for the Health indicator to turn red.
Select the server and then choose Actions > Remove from Cluster.
For information about deleting an Identity Server, see Managing a Cluster of Identity Servers.
IMPORTANT:When a cluster contains only two Identity Servers, introduce a new Identity Server to the cluster before removing the other Identity Server.