Node Manager
The Node Manager, as mentioned earlier in this chapter, is a purely optional process (or daemon) that lets you remotely manage both the Admin Server and all Managed Servers within that domain. If you're in a production environment with high availability requirements, Oracle recommends that you use the Node Manager to manage the servers running on different machines. In Chapter 2, you'll find a detailed explanation of how to configure the Node Manager and how to manage servers using WLST and Node Manager together.
Unlike the Admin Server, of which there's only a single instance running per domain, you must run the Node Manager on each of the servers (machines) on which you plan to run the Admin Server or one of the Managed Servers. ...
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