Monday, August 30, 2010

Configuring Plain NodeManger on Solaris

Today morning one of my buddy pinged me from my team, seeking help on an issue he is faceing in his newly  configured WL domain for his learnings.

Understanding the Issue
My buddy novice WLA is trying to start the WebLogic instance on a remote machine. He is working on Solaris 10 operating environment, WebLogic 9.2. I asked for Java version, He executed the following command:

$ java -version

I asked for jps command execution the system is refused and said that ' jps is bad cammand'. I understand that  JAVA_HOME is not set for his environment. asked for echo $PATH. It is showing Java Path. Ohh!! what is missing then??

$which java
this resulted that JAVA_HOME is NOT set to weblogic installation JDK, it was pointed to JAVA_HOME come with the Solaris installation.  I understand that could be one of the reason of not starting the server instance. Update the .profile file with  JAVA_HOME as required to set JDK residing in WebLogic installation path.

What is your NodeManager saying?
My buddy located the logs and found the following line [Security:090482]BAD_CERTIFICATE

To avoiding this Exception you must have certificate generated and installed as requested bye nodemanager. Why we need this SSL certificate? Open the WebLogic Admin console, found that he is working with SSL type of Node Manager. If you don't have secure certificates to configure you should not use SSL type nodemanager. I suggested better to use "Plain" type for the NodeManager configuration on the machine for learning purpose.  Change it in the admin console and save the changes.

Redefining NM properties

You need to update few NodeManager properies on every machine your domain is configured.

Machine wise changes

Common "Plain" setting for all the machines involved in domain

Stop the Admin server and managed servers (if any running) stop the NodeManger in all machines the domain configured.

Now, First start the NodeManager in the which Admin server residing then start the Admin Server. After Admin Server starting all the domain configuration details will be captured by NodeManager on that machine and ready for communicate with remote NodeManagers. Next, Start the NodeManager on the remote Machine(s) . 

Finally, start the remote server using admin console.  to start your remote managed server make sure that your admin server, Node Managers on admin machine and remote machines must be running without any ERROR or WARN messages. Conclude your configuration is successful by checking the Node Manager logs, and on the admin console check the server state

Note that jps command will list all java processes which includes NodeManager process too.
12121 NodeManager
4544 Server

Further References for Secure NodeManager:
1. SSL Node Manager configuration
2. Fisal SSL

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Blurb about this blog

Blurb about this blog

Essential Middleware Administration takes in-depth look at the fundamental relationship between Middleware and Operating Environment such as Solaris or Linux, HP-UX. Scope of this blog is associated with beginner or an experienced Middleware Team members, Middleware developer, Middleware Architects, you will be able to apply any of these automation scripts which are takeaways, because they are generalized it is like ready to use. Most of the experimented scripts are implemented in production environments.
You have any ideas for Contributing to a Middleware Admin? mail to me