Administering Managed Server With Node Manager

Node Manager:

Is a separate utility/process which run on the machine which is hosting the node manager its used for:

Remotely starting the weblogic server(Managed server)
Not exactly associated with any domain
it can start the server and server instances on which it resides
Node Manager should be configured on each machine

Type of Node Manager:

Java Based
Script Based

Creating Node Manager for each machine:

click on the respective Machine for which node manager needs to be created and further click on lock and edit option and further on the node manager option as shown in below screenshot.

After this we need to give the appropriated configuration parameter for this node manager like listening port after doing all changes we need to save the setting similar way we can create node manager for other machines remember to click on activate the changes option.

Configuring node manager using WLST weblogic server tool

first we need to connect to WLST for this we need to execute the script: ./wlst.sh as shown in below screenshot:
./Oracle/Middleware/wlserver_10.3/common/bin/wlst.sh

once the wlst server is started we need to connect to weblogic admin server as shown in below screenshot.

once connected to welbogic admin console we need to configure the node manager as per the command shown below
command syntax : nmEnroll ('doman path','path of nodemanager dir') below is the reference screenshot.

After command execution it should show successfully enrolled machine with the domain we need to copy the classpath and paste it into the managed server (start server option). see below 2 screenshots.

After this we need to start the managed server: for this go to the terminal and domain home directory we need to execute the command with proper syntax as shown in below screenshot:

The aboe command should start the specified managed server similarly we can restart the remaining managed webserver if all managed server starts this means managed server configuration is good next we need to to start the node manager for this first we need to close the existing managed servers.