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Last Modified: 2013-12-10
I have two linux machines. Lets suppose A and B. I have installed Deployment manager and a custom node on machine A and a custom node on machine B. I have made 2 application servers(AppServer1 and AppServer2) each on both nodes.I have installed IBM HTTP server and plugins on machine A and did configuration for the same. its working fine.
                              Now i have to install IBM http server on machine B. IBM HTTP server on machine A serves request for Appserver1 on machine A as well as on machine B and  IBM HTTP server on machine B serves request for Appserver2 on machine B as well as on machine A. attached diagram will give clear picture for the same.  
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Are you looking for any recommendation/suggestion?

I think you are planning for a Active/Passive mode for the webserver.You can follow the same method you have performed on Machine A.

1. Is the same application running on both Nodes/Application server? If so you can create a application Cluster and can configure for high availability application, the plugin will forward the request to availabe cluster member.

2. If the webserver is going to expose to internet then I would recommend to put the webserver in a separate machine and secure the application server.
3. You can configure active-active webserver using the loadbalancer instead of the active-passive.

Going forward please give a clear picture on what you are expecting and methods you have followed.


I want to go with option no 1. I will be running same application on both nodes/app servers. Please suggest how to cofigure the same.
1.  You can create a cluster from the DMGR
2. You can add one of  existing Application Server to the new Cluster as Cluster Member from Node1
3. Mention a new cluster member/Application Server name on Node2(See note for more details.)
4. All the information will be stored in the plugin. You can use this plugin from the dmgr to configure with HTTP Server.

Note: You can add only one existing Application Server to new Cluster. Second Member should be a new one. Even if you have applications installed on First Application Server/Member the data(ear) will be Sync to the other. Once this is created you can safely delete the other application Server.

You can skip/Configuration Replication.

Please refer the Link: http://publib.boulder.ibm.com/infocenter/wasinfo/v6r1/topic/com.ibm.websphere.nd.doc/info/ae/ae/trun_wlm_cluster_v61.html

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I had already made a cluster with 2 members appserver1 and appserver2 which I have specified in my question.

Now you can configure the plugin with the HTTP Server to talk to the AppServer.Plugin will decide to forward request to which appserver.
You can configure the WebServer in a managed mode or Unmanaged mode, this call should be taken by you depends on environment.


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