Problem while starting managed server using nodemanager

Question

Hi everyone,
I am using WLST of Weblogic server 10.3, to automate the creation of domain, managed servers,JDBC,JMS resources etc.. and trying to start the managed servers using node manager. I have an environment which contains few domains. All the domains are using machine named "X".
Now, i am creating the same machine in my domain WLSTDomain. I have the following doubts.
Is there a way to check whether the nodemanager(of X) is already running.
If there is a way to check that, how can we start the managed servers in WLSTDomain using that existing nodemanager.

Answer 1

1. yes you can check if the nodemanage is running using the following ways.
For linux env:-
a. Check if the JAVA process for nodemanager is running ps -ef | grep java and see the nodemanager process else /usr/sbin/lsof -i:$port (port of nodemanager).
b. Login to Admin Console --> Environment --> Machines --> Click on Machines --> Nodemanager --> Monitoring will give you nodemanager status from Admin console.
c. use nm() command with WLST
Example:
wls:/mydomain/serverConfig> nm()
Currently connected to Node Manager that is monitoring the domain "mydomain"
wls:/mydomain/serverConfig> nm()
Not connected to any Node Manager
wls:/mydomain/serverConfig>
To see if WLST connects to nodemanager or not?
help('nmLog') --> to check the nm logs
2. To start the nodemanager using WLST here are the commands
Example:
For single managed Server
wls:/mydomain/serverConfig> start('myserver', 'Server', block='false')
Starting server 'myserver' ...
The server 'myserver' started successfully.
wls:/mydomain/serverConfig>
For Cluster
wls:/mydomain/serverConfig> start('mycluster', 'Cluster')
Starting the following servers in Cluster, mycluster: MS1, MS2, MS3...
All servers in the cluster mycluster are started successfully.
wls:/mydomain/serverConfig>