WebSphere Application Server cloning and WebSphere MQ clustering

This topic provides a summary of information about using WebSphere Application Server horizontal cloning with WebSphere MQ server clustering support. It describes a scenario that shows how the message listener service can be configured to take advantage of WebSphere MQ server clustering and provides some information about how to resolve potential runtime failures in the clustering scenario. The information in this topic is based on the scenario shown in WebSphere Application Server horizontal cloning with WebSphere MQ clustered queues.

Note: WebSphere MQ server clustering is only available with the full WebSphere MQ product installed as the JMS provider.

For a WebSphere application server configured to use the extended messaging service, each JMS listener is used to retrieve messages from destinations defined to the server. In the following information the listener configurations are the same for each WebSphere application server. Each application server host contains a WebSphere application server and an WebSphere MQ server. If a host is only used to distribute messages, it only contains an WebSphere MQ server. There can be many servers defined in the configuration, although for simplicity the information in this topic is based on a scenario containing only three servers as shown in WebSphere Application Server horizontal cloning with WebSphere MQ clustered queues.

Asynchronous messaging scenario showing 2 WAS server hosts, with WAS horizontal cloning, and a messaging host for WebSphere MQ server clustering
WebSphere Application Server horizontal cloning with WebSphere MQ clustered queues. This figure shows two WebSphere Application Server hosts, with horizontal clustering, and a messaging host used to distribute messages for WebSphere MQ server clustering. For more information, see the text that accompanies this figure.

The scenario shown in WebSphere Application Server horizontal cloning with WebSphere MQ clustered queues comprises the following three hosts:

Recovery scenarios

There are several failure scenarios that could occur with the clustering configuration; for example:


Related concepts
Asynchronous messaging with WebSphere - an overview



Searchable topic ID:   cm_clust
Last updated: Jun 21, 2007 9:56:50 PM CDT    WebSphere Application Server for z/OS, Version 5.0.2
http://publib.boulder.ibm.com/infocenter/wasinfo/index.jsp?topic=/com.ibm.websphere.zseries.doc/info/zseries/ae/cm_clust.html

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