Load balancing and cluster

[Former Member]

Please help on this,

Steps I have created

1. Install Portal on node A

2. Create j2ee cluster instance on node B pointing to node A

3. Software load balance both the nodes

Even after load balancing the two portal nodes,if I shutdown Portal node A dispatcher,then the portal node B dispatcher will automatically shutdown, since the portal node B is a j2ee cluster for Portal node A.In this case how the URL will work from node B ? Please explain

[Former Member · Accepted solution]

From your description and the documents I understood, that state controller is running only on server A, and that no backup state controller is installed on server B, so the cluster nodes on server B will shut down, when we shutdown state-controller on server A.

Since I have installed on J2ee cluster node on server B is it possible to configure the server as backup state controller, if so, please let me know the steps or refer some documents to remove additional node of J2ee cluster from server B.

I will provide you star as soon as possible.

[MarcelRabe · Accepted solution]

You're right. Once the state controller fails, the cluster information is gone. The backup state controller is optional but recommended, so yes you can configure your server B as the backup state controller.

If you do not see the state controller in the configtool, then to be honest I don't know if you can manually add it. I would run a cleanapp.bat or just delete the entire usr directory and sapinst directory on node B and start again. If you keep hostnames and ip's the same, my experience is that it works fine (even the clusterid's remain the same).

but there's a part in the pdf about removing a cluster node. I don;t have it by hand here.

[Former Member · Accepted solution]

Marcel,

Thank you very much for the information.I uninstalled the cluster node and installed again with the option

of "backup state controller". Now it is working fine. When i shutdown the dispatcher of Server A, now the Server B is not going down. And I am able to see iViews and users on Server B.

I have one more question,that do I need to copy any files physically from Server A(main server)to Server B(Additional node with backup state controller) manually.

Note : I have given you star.

[MarcelRabe · Accepted solution]

Hi,

thanx for the star. Good to hear it works now.

You do not need to copy any files manually. In principal all components are replicated when needed. But the truth is that this doesn't work properly sometimes.

In the case when a iview works on node a but not on node b, find out which par file the iview uses and use the Console Administrator to install the missing component on the other node.

rdgs Marcel