10-14 Using Clusters for Oracle WebLogic Server
10.2.9.1.2 Sample weblogic.xml This section contains a sample weblogic.xml file. The
context-root deployment parameter is set to . This makes the proxy servlet the default Web application for the proxy server.
DOCTYPE weblogic-web-app PUBLIC -BEA Systems, Inc.DTD Web Application 9.1EN http:www.bea.comserverswls810dtdweblogic
810-web-jar.dtd weblogic-web-app
context-rootcontext-root weblogic-web-app
10.2.9.1.3 Proxy Servlet Deployment Parameters Key parameters for configuring the
behavior of the proxy servlet in web.xml are listed in Table 10.1
. The parameters for the proxy servlet are the same as those used to configure WebLogic
Server plug-ins for Apache, Microsoft, and Netscape Web servers. For a complete list of parameters for configuring the proxy servlet and the plug-ins for third-part Web
servers see Parameters for Web Server Plug-ins in Using Web Server Plug-Ins with WebLogic Server.
The syntax for specifying the parameters, and the file where they are specified, is different for the proxy servlet and for each of the plug-ins.
For the proxy servlet, specify the parameters in web.xml, each in its own init-param stanza within the servlet stanza of web.xml. For example:
init-param param-nameParameterNameparam-name
param-valueParameterValueparam-value init-param
Setting up WebLogic Clusters 10-15
Table 10–1 Proxy Servlet Deployment Parameter
Parameter Usage
WebLogicCluster init-param param-nameWebLogicClusterparam-name
param-valueWLS1.com:port|WLS2.com:port param-value
Where WLS1.com and WLS2.com are the host names of servers in the cluster, and port is a port where the host is listening for HTTP requests.
If you are using SSL between the plug-in and WebLogic Server, set the port number to the SSL listen port see Configuring the Listen Port and set the SecureProxy parameter to
ON. SecureProxy init-param
param-nameSecureProxyparam-name param-valueParameterValueparam-value
init-param
Valid values are ON and OFF. If you are using SSL between the plug-in and WebLogic Server, set the port number to the
SSL listen port see Configuring the Listen Port and set the SecureProxy parameter to ON.
DebugConfigInfo init-param param-nameDebugConfigInfoparam-name
param-valueParameterValueparam-value init-param
Valid values are ON and OFF. If set to ON, you can query the HttpClusterServlet for debugging information by
adding a request parameter of ?__WebLogicBridgeConfig to any request. Note: There are two underscore _ characters after the ?. For security reasons, it is recommended that
you set the DebugConfigInfo parameter to OFF in a production environment.
ConnectRetrySecs Interval in seconds that the servlet will sleep between attempts to connect to a server
instance. Assign a value less than ConnectTimeoutSecs. The number of connection attempts the servlet makes before returning an HTTP
503Service Unavailable response to the client is ConnectTimeoutSecs divided by ConnectRetrySecs.
Syntax: init-param
param-nameConnectRetrySecsparam-name param-valueParameterValueparam-value
init-param
ConnectTimeoutSecs Maximum time in seconds that the servlet will attempt to connect to a server instance. Assign a value greater than ConnectRetrySecs.
If ConnectTimeoutSecs expires before a successful connection, an HTTP 503Service Unavailable response is sent to the client.
Syntax: init-param
param-nameConnectTimeoutSecsparam-name param-valueParameterValueparam-value
init-param
10-16 Using Clusters for Oracle WebLogic Server
PathTrim String trimmed by the plug-in from the beginning of the original URL, before the request is
forwarded to the cluster. Syntax:
init-param param-namePathTrimparam-name
param-valueParameterValueparam-value init-param
Example: If the URL
http:myWeb.server.comweblogicfoo is passed to the plug-in for parsing and if PathTrim has been set to
weblogic the URL forwarded to WebLogic Server is:
http:myWeb.server.com:7001foo TrimExt
The file extension to be trimmed from the end of the URL. Syntax:
init-param param-nameTrimExtparam-name
param-valueParameterValueparam-value init-param
Table 10–1 Cont. Proxy Servlet Deployment Parameter
Parameter Usage
Setting up WebLogic Clusters 10-17
10.2.9.1.4 Accessing Applications Via the Proxy Server Ensure that applications clients will
