In this chapter, we went through the WildFly domain setup and configuration. By configuring a server domain, you can manage your servers from a single centralized point, which is desirable when you have to administer a large set of server nodes.

Every domain is composed of four main elements: the domain controller, the host controller, the process controller, and the server.

The domain controller handles the domain configuration, while the host controller coordinates the life cycle of server processes and the distribution of deployments. The process controller handles the domain server processes and manages their I/O streams.

Every domain is made up of one or more server groups, which allows fine-grained configuration of the domain. Each server group can define its own JVM attributes, socket binding interfaces, and system properties, which are loaded at startup. You can also deploy applications to each of the nodes within the domain.

Server groups are defined in the domain.xml configuration...