If you are planning on upgrading your WebSphere Servers to a later fixpack level, be sure to start with the Deployment Manager. If you do not, your Deployment Manager will not be able to contact your ‘future level’ node agent.
“Server cannot be started because the node agent for server Node1 on node x is not active”
Attempting to call syncNode to the deployment manager will result in:
ADMU0127E: The version of the Deployment Manager is earlier than that of this node. Deployment Manager version earlier than that of a node is an unsupported configuration.Upgrade the Deployment Manager to the same or later version as that of the node.