Before you begin
This topic describes what to do to migrate a Web server from supporting IBM WebSphere Application Server, Version 4.0.x or V5.x, to support IBM WebSphere Application Server- Express, Version 6.
Why and when to perform this task
Use the Plugins installation wizard to install the binary plug-in module and the plugin-cfg.xml configuration file on the same machine as the Web server. Use the following procedure to migrate your Web server to work with Version 6.
Steps for this task
Install the HTTP Server and its plug-in on a different machine with the following procedure:
This script installs the plug-in you need and makes the necessary configuration changes for the supported Web server.
IBM HTTP Server, Version 6.0 can coexist with earlier versions, or you can upgrade earlier versions to V6.0. Upgrading relieves you from having to uninstall and reinstall the HTTP server. Install V6.0 into the same directory structure as the earlier version to upgrade that version. If you install the HTTP Server into a different directory, V6.0 coexists with the previous version. By default, the administration server and the Web Server use the same ports as the previous version, which causes a conflict. However, you can change the port assignments on the port assignment panel of the WebSphere Application Server installation wizard or the Profile creation wizard.
Versions 4.0.x, 5.x, and 6 of WebSphere Application Server use the same HTTP transport plug-in binary module. If the Web server configuration file contains WebSphere Application Server V4.0.x or V5.x plug-in information, you must manually remove it. Otherwise, when the HTTP Server attempts to start the second V6 plug-in binary module, there is an error. The error indicates that the module is already loaded.
V4.0.x installations: Alias /IBMWebAS/ "C:\WebSphere\AppServer40\web\" Alias /WSsamples "C:\WebSphere\AppServer40\WSsamples\" V5 installation: Alias /WSsamples "c:\Program Files\WebSphere\AppServer\WSsamples" Alias /IBMWebAS/ "c:\Program Files\WebSphere\AppServer\web\" V6 installation: Alias /WSsamples "c:\Program Files\WebSphere\AppServer\WSsamples" Alias /IBMWebAS/ "c:\Program Files\WebSphere\AppServer\web\"
Use the following steps to generate a Web server plug-in configuration file that is based on topology. This method was used for generated plug-in configuration files in previous releases.
It is recommended that you migrate to the application-centric approach which uses the Plug-ins installation wizard. The Plug-ins installation wizard generates scripts that can be used to create the Web server definition for that Web server and to map all of the applications that are currently deployed to the newly created Web server definition.
Result
You now understand what you must do to install or migrate a Web server and plug-in to work with WebSphere Application Server, including installing the Web server on the same machine with the Application Server, or on different machines.What to do next
Related concepts
Migration and coexistence overview
Related tasks
Installing IBM HTTP Server
Editing Web server configuration files
Web server plug-in properties settings
Configuring IBM HTTP Server for Secure Sockets Layer mutual authentication