Because the node agent must be created locally on the machine hosting the node agent, through the Admin Console you can only create a placeholder for a node agent. This placeholder is a node agent configuration for which a node agent does not yet exist.
After creating a placeholder, use the asadmin command create-node-agent on the machine hosting the node agent to complete the creation. For more information, see Creating a Node Agent.
For a list of the steps involved in creating and using node agents, see Deploying Node Agents
In the tree component, select the Node Agents node.
On the Node Agents page, click New.
On the Current Node Agent Placeholder page, enter a name for the new node agent.
The name must be unique across all node agent names, server instance names, cluster names, and configuration names in the domain.
The placeholder for your new node agent is listed on the Node Agents page.