Adding a messaging engine to a cluster

You can add a messaging engine to a cluster bus member to provide additional asynchronous messaging services to the servers that are members of the cluster. Typically, you do this to provide workload sharing or scalability in the cluster.

Before you begin

To add a messaging engine to a cluster, a location for the message store for the messaging engine must be defined. Each messaging engine uses a message store to preserve operating and recovery information. You need a suitable data source, such as a relational database, that is accessed through a JDBC data source. You can use the default JDBC data source and Derby JDBC Provider for its data store. If you do not want to use the default data source configuration, you can use a different data source or you can configure the data store to use a different JDBC provider.If you want any of the messaging engines in the cluster to fail over to another server, all servers that could host each messaging engine need access to the message store for that messaging engine.

About this task

When you add a cluster as a member of a bus, one messaging engine is created automatically. Cluster bus members can support additional messaging engines.

To add a messaging engine to a cluster, use the administrative console to complete the following steps:

Procedure

  1. In the navigation pane, click Service integration > Buses.
  2. In the content pane, click the name of the bus.
  3. In the content pane, under Topology, click Bus members. A list of members in the bus is displayed.
  4. In the content pane, select the cluster to which you want to add a messaging engine. A list of messaging engines for the cluster is displayed.
  5. Click Add messaging engine.
  6. Follow the steps in the wizard to enter the details of the message store for the messaging engine. Specify the JNDI name of the data source that provides access to the database that holds the data store. You can use the same database for more than one messaging engine, as long as each one uses a different schema name.
  7. Save your changes to the master configuration.

Results

A messaging engine is added to the cluster.



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Last updated: Aug 29, 2010 8:25:23 PM CDT
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