Accepted Solutions
Please check these Prerequisites:
The fully qualified domain name (FQDN) of the standalone node that you are going to register, for example, ise1.cisco.com must be DNS-resolvable from the primary Administration ISE node. Otherwise, node registration will fail. You must enter the IP addresses and FQDNs of the ISE nodes that are part of your distributed deployment in the DNS server.
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The primary Administration ISE node and the standalone node that you are about to register as a secondary node should be running the same version of Cisco ISE.
•Node registration fails if you provide the default credentials (username: admin, password: cisco) while registering a secondary node. Before you register a standalone node, you must log into its administrative user interface and change the default password (cisco).
•You can alternatively create an administrator account on the node that is to be registered and use those credentials for registering that node. Every ISE administrator account is assigned one or more administrative roles. To register and configure a secondary node, you must have one of the following roles assigned: Super Admin, System Admin, or RBAC Admin. See Cisco ISE Admin Group Roles and Responsibilities for more information on the various administrative roles and the privileges associated with each of them.
•If you plan to register a secondary Administration ISE node for high availability, we recommend that you register the secondary Administration ISE node with the primary first before you register other Cisco ISE nodes. If Cisco ISE nodes are registered in this sequence, you do not have to restart the secondary ISE nodes after you promote the secondary Administration ISE node as your primary.
•If you plan to register multiple Policy Service ISE nodes running Session services and you require mutual failover among those nodes, you must place the Policy Service ISE nodes in a node group. You must create the node group first before you register the nodes because you need to select the node group to be used on the registration page. See "Creating, Editing, and Deleting Node Groups" section for more information.
•Ensure that the Certificate Trust List (CTL) of the primary node is populated with the appropriate Certificate Authority (CA) certificates that can be used to validate the HTTPS certificate of the standalone node (that you are going to register as the secondary node). See the "Creating Certificate Trust Lists in the Primary Cisco ISE Node" section on page 12-24 for more information.
•After registering your secondary node to the primary node, if you change the HTTPS certificate on the registered secondary node, you must obtain appropriate CA certificates that can be used to validate the secondary node's HTTPS certificate and import it to the CTL of the primary node. See "Creating Certificate Trust Lists in the Primary Cisco ISE Node" section on page 12-24 for more information.
