WebSphere Application Server - Where's my Node Agent ?

Whilst trying to start a newly created WAS Node Agent: -

/opt/ibm/WebSphere/AppServer/profiles/AppSrv01/bin/startNode.sh

I saw this: -

...
ADMU0116I: Tool information is being logged in file
           /opt/ibm/WebSphere/AppServer/profiles/AppSrv01/logs/nodeagent/startServer.log
ADMU0128I: Starting tool with the AppSrv01 profile
ADMU3100I: Reading configuration for server: nodeagent
ADMU0111E: Program exiting with error: java.io.FileNotFoundException:
           /opt/ibm/WebSphere/AppServer/profiles/AppSrv01/config/cells/workflowNode01Cell/nodes/Node1/servers/nodeagent/server.xml
           (No such file or directory)
ADMU1211I: To obtain a full trace of the failure, use the -trace option.
ADMU0211I: Error details may be seen in the file:
           /opt/ibm/WebSphere/AppServer/profiles/AppSrv01/logs/nodeagent/startServer.log
…

and, in the startServer.log file: -

…

[30/10/18 09:54:35:727 GMT] 00000001 WsServerLaunc E   ADMU3002E: Exception attempting to process server nodeagent
[30/10/18 09:54:35:728 GMT] 00000001 WsServerLaunc E   ADMU3007E: Exception java.io.FileNotFoundException: /opt/ibm/WebSphere/AppServer/profiles/AppSrv01/config/cells/workflowNode01Cell/nodes/Node1/servers/nodeagent/server.xml (No such file or directory)
        at java.io.FileInputStream.open(FileInputStream.java:212)
…

[30/10/18 09:54:35:739 GMT] 00000001 AdminTool     E   ADMU0111E: Program exiting with error: java.io.FileNotFoundException: /opt/ibm/WebSphere/AppServer/profiles/AppSrv01/config/cells/workflowNode01Cell/nodes/Node1/servers/nodeagent/server.xml (No such file or directory)
…

[30/10/18 09:54:35:741 GMT] 00000001 AdminTool     A   ADMU0111E: Program exiting with error: java.io.FileNotFoundException: /opt/ibm/WebSphere/AppServer/profiles/AppSrv01/config/cells/workflowNode01Cell/nodes/Node1/servers/nodeagent/server.xml (No such file or directory)
…

And then it struck me ….

I'd just created the Deployment Manager and Node profiles ….

And had NOT yet federated the Node into the managed Cell …

So how the heck is it ever going to work ?

Until I federate the Node ….

/opt/ibm/WebSphere/AppServer/profiles/AppSrv01/bin/addNode.sh `hostname` 8879 -profileName AppSrv01 -username wasadmin -password passw0rd

…

ADMU0003I: Node Node1 has been successfully federated.

...

Can you say "Doofus" ? Or something much much worse !