IBM Integration Bus, Version 9.0.0.8 Operating Systems: AIX, HP-Itanium, Linux, Solaris, Windows, z/OS

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Using external web servers with IBM Integration Bus

IBM® Integration Bus is frequently a component in Service Oriented Architecture (SOA) patterns that include external web servers and other HTTP solutions. Learn about the facilities that IBM Integration Bus provides to help you to configure your web server infrastructure, and which configuration option best fits your existing topology.

The following diagram shows a web server topology that uses a web server plug-in generated in WebSphere® Application Server to handle HTTP and HTTPS connections with an application server. The web clients use HTTPS to communicate with the web server, and the WebSphere Application Server plug-in forwards traffic over HTTP to one of two application servers. This topology provides simplified administration: the clients connect to a single endpoint, and all client security is handled in a single place. The plug-in can be used to handle load-balancing and failover between the two application servers.

WebSphere Application Server plug-in with application servers

You can configure a WebSphere Application Server plug-in so that it can be used, without any loss of functionality, with IBM Integration Bus in the place of the application server. You can then take advantage of the load-balancing and failover capabilities of the plug-in to:

Support many HTTP sessions
Enable access to the broker from multiple IP addresses and ports
Simplify the administration of your SOA topology

In the following diagram, IBM Integration Bus takes the place of the application servers. HTTP traffic is handled by broker-wide listeners on both systems.

WebSphere Application Server plug-in with IBM Integration Bus

The WebSphere Application Server plug-in can be used in the preceding cases, and in more complex scenarios, to:

Implement load-balancing
Implement clustering for failover
Expose application server and web server services and files through a single front end
Manage security for all URLs in a single place and in a consistent manner
Set up a network dispatcher to multiple web service endpoints

You can use IBM Integration Bus to achieve this type of configuration. Depending on your existing topology, use IBM Integration Bus to generate the most appropriate type of configuration data:

If your existing topology incorporates WebSphere Application Server, generate a configuration file that can be read by a WebSphere Application Server web server plug-in
If your existing topology does not contain WebSphere Application Server, but uses an Apache web server, such as IBM HTTP Server, generate a configuration file that can be merged into your Apache mod_proxy configuration
If your topology is not described by the previous options, you can use the IBM Integration API to generate a per-broker list of port and URL data in CSV format, which you can use in your web server configuration

Refer to the following topics to help you to generate the appropriate configuration data for your web server topology:

Generating an HTTP server configuration by using the IBM Integration Explorer
Generating an HTTP server configuration by using the IBM Integration API
The documentation on BrokerProxy.getPortConfigAsCSV() in the CMP reference documentation

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Last updated Friday, 21 July 2017

Using external web servers with IBM Integration Bus

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