Topology design
Install WebSphere XD first as a simple topology configuration to familiarize yourself with its features in a test environment. When you are familiar with the advanced features, you can design advanced topologies that apply specifically to your application server environment.
The following graphic represents a supported topology of WebSphere XD. In this topology, the on demand router tier, showing multiple ODRs, is between the HTTP server tier and the application server tier.
The ODR, with the assistance of the autonomic managers, categorizes and prioritizes the work before routing work to the appropriate nodes.
Install the deployment manager on a separate workstation than the application server nodes to prevent unmanaged work from occurring on the nodes. Deactivating the deployment manager also deactivates preferred coordinators and, therefore, reduces high availability.
When you are using a single physical computer that is hosting multiple nodes, the deployment manager can run on one of the nodes, and application servers can run on the other nodes. The application placement controller has been updated to consider the deployment manager when it makes placement decisions.
When you are familiar with WebSphere XD in a simple topology, you can add layers of complexity to your test environment. Include a firewall to secure your environment, and stress test to see WebSphere XD features in action. Typically, when the workload increases, ensure that you have enough resources to manage the workload and that the resources configure and function together. You can also include IP sprayer in this configuration to eliminate any single point of failure, and make this topology highly available. An IP sprayer distributes requests from one IP address to multiple IP addresses.
Related concepts
Installation prerequisites
Related tasks
Preparing WAS ND to install WebSphere XDInstalling WebSphere XD
Planning the installation