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Chapter 5. Installation environment options

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With Red Hat Decision Manager, you can set up a development environment to develop process-driven applications, a runtime environment to run those applications to support decisions, or both.

A development environment typically consists of one Decision Central installation and at least one Decision Server installation. Decision Central enables developers to create decision processes, rules, and other artifacts. They use Decision Server to test the artifacts that they created.

A runtime environment consists of one or more Decision Server instances with or without Decision Central. Decision Central has an embedded Decision Manager controller. If you install Decision Central, use the Execution Server page to create and maintain containers. If you want to automate Decision Server management without Decision Central, you can use the headless Decision Manager controller.

Clustered environments

By clustering two or more computers, you have the benefits of high availability, enhanced collaboration, and load balancing. High availability decreases the chance of a loss of data when a single computer fails. When a computer fails, another computer fills the gap by providing a copy of the data that was on the failed computer. When the failed computer comes online again, it resumes its place in the cluster. Load balancing shares the computing load across the nodes of the cluster. Doing this improves the overall performance.

You can cluster both development and runtime environments. The primary benefit of clustering Red Hat Decision Manager development environments is high availability and enhanced collaboration. The primary benefit of clustering a runtime environment is load balancing and high availability. If activity on one node of the cluster increases, that activity can be shared among the other nodes of the cluster to improve performance.

Clustering of the run time environment is supported on Red Hat JBoss EAP 7.2 and OpenShift, however clustering of Decision Central is currently in technology preview.

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