![]() How Node Manager Starts an Administration Server The following sections provide a big picture diagram of Node Manager's role in the WebLogic Server environment, as well as illustrations and descriptions of the processes Node Manager uses to communicate with server instances: In the WebLogic Server Administration Console and FMWC, you can specify the startup arguments that Node Manager uses to start a Managed Server. The nmStart command identifies the server instance and creates the Administration Server process. The nmConnect command provides a Node Manager user name and password that are used to authenticate the user with Node Manager. Node Manager uses the startup properties and remote startup arguments to start an Administration Server and Managed Server respectively. You can also install the Java implementation of Node Manager as a Windows service. The inetd daemon allows Node Manager to be automatically restarted upon receiving a request on the configured port. The Java implementation of Node Manager can be used in conjunction with inetd on supported UNIX systems. The script implementation of Node Manager also requires a smaller footprint than the Java implementation. RSH and SSH are generally easier to configure than SSL, which is the only way to secure Java-based Node Manager. The script-based Node Manager requires a much simpler security configuration than the Java implementation. To use consensus leasing, you may see faster performance when using the Java implementation of Node Manager. Script-based Node Manager is configured after the domain has been created ![]() Java-based Node Manager can be configured at the time you create the domain. The scripted implementation of Node Manager is not supported on Windows. If you are installing WebLogic Server on a Windows system, you must use the Java implementation of Node Manager. The following considerations can help you decide which implementation is ideal for your environment: The implementation of Node Manager you should use depends on the requirements of your WebLogic Server environment.
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