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2.5.3 Web server plug-in failover tuning

The Web server plug-in uses an XML configuration file called plugin-cfg.xml to determine information about the WebSphere cell it is serving. There are some settings in the plug-in file that directly affect how the plug-in works in a workload management environment. In WebSphere V6 all of these settings can be modified using the Administrative Console. Plug-in file tags related to workload management and failover are: - You can change the retry interval for connecting to a cluster member marked as down. See Retry interval for more information.

- You can add the ConnectTimeout attribute for each server. See Connection Timeout setting.

- You can divide the servers into a primary server list and a backup server list. This is a feature available since WebSphere V5, also called two-level failover support. See Primary and backup servers for information.

- You can change the maximum number of connections that will be allowed to a server from a given plug-in. If this attribute is set to either zero or -1, there is no limit to the number of pending connections to the appservers. The default value is -1. Refer to Maximum number of connections.

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