Unregister a Data Node
If you need to permanently remove a cluster node (for example, if you remove a module on the Firepower 9300, or remove a chassis), then you should unregister it from the Cloud-Delivered Firewall Management Center.
Do not unregister the node if it is still a healthy part of the cluster, or if you only want to disable the node temporarily. To remove it permanently from the cluster in FXOS, see FXOS: Remove a Cluster Node. If you unregister it from the Cloud-Delivered Firewall Management Center, and it is still part of the cluster, it will continue to pass traffic, and could even become the control node—a control node that the Cloud-Delivered Firewall Management Center can no longer manage.
Before you begin
To manually deactivate the node, see Deactivate a Member. Before you unregister a node, the node must be inactive, either manually or because of a health failure.
Procedure
Step 1 | Make sure the node is ready to be unregistered from the Cloud-Delivered Firewall Management Center. On , make sure the node shows (Disabled).
You can also view each node's status on the Cluster Status dialog box available from More ( |
Step 2 | In the Cloud-Delivered
Firewall Management Center for the data node you want to delete, choose and then click More ( |
Step 3 | Confirm that you want to unregister the node. The node is removed from the cluster and from the Cloud-Delivered Firewall Management Center devices list. |
