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WebSphere Application Server V7.0: Concepts ... - IBM Redbooks

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System A<br />

1. Copy the file targetTree.xml to the /staticRoutes directory.<br />

Note: The static routing information is not updated automatically.<br />

Whenever there is a change (for example when an application is installed<br />

or removed) the routing information needs to be manually refreshed. The<br />

DMZ secure proxy servers needs to be restarted after each refresh of the<br />

routing information to activate the change. If this is not feasible you need to<br />

switch the dynamic routing to use a lower security level.<br />

2. Go to the /bin directory and start wsadmin -lang jython<br />

-conntype NONE.<br />

3. Import the profile changes from /DMZProxy.car by running the<br />

wsadmin command shown in Example 5-3.<br />

Example 5-3 Sample code to import proxy profile<br />

AdminTask.importProxyProfile('-archive /DMZProxy.car<br />

-deleteExisting<strong>Server</strong>s true')<br />

AdminConfig.save()<br />

4. Start the DMZ secure proxy server.<br />

5.3.5 Topology with redundancy of multiple components<br />

To remove single points of failure in a topology, redundant components are<br />

added. Most components in a <strong>WebSphere</strong> <strong>Application</strong> <strong>Server</strong> topology provide<br />

the options to implement redundancy. For example, Load Balancer hot standby<br />

server with the primary Load Balancer server, clustered Web servers, clustered<br />

application servers, and so forth. The topology shown in Figure 5-8 on page 161<br />

illustrates the minimum <strong>WebSphere</strong> components used in an installation with the<br />

usual high availability requirements (whereby the number of application servers<br />

might vary).<br />

160 <strong>WebSphere</strong> <strong>Application</strong> <strong>Server</strong> <strong>V7.0</strong>: <strong>Concepts</strong>, Planning, and Design

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