1.6. About the Domain Controller

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A domain controller is the JBoss EAP 6 server instance that acts as a central management point for a domain. One host controller instance is configured to act as a domain controller.
The primary responsibilities of the domain controller are:
  • Maintain the domain's central management policy.
  • Ensure all host controllers are aware of its current contents.
  • Assist the host controllers in ensuring that all running JBoss EAP 6 instances are configured in accordance with this policy.
By default, the central management policy is stored in the domain/configuration/domain.xml file. This file is in the unzipped JBoss EAP 6 installation file, on the domain controller's host's filesystem.
A domain.xml file must be located in the domain/configuration/ directory of the host controller set to run as the domain controller. This file is not mandatory for installations on host controllers that are not meant to run as a domain controller. The presence of a domain.xml file on such a server does no harm, however.
The domain.xml file contains the profile configurations that can be run on the server instances in a domain. A profile configuration includes the detailed settings of the various subsystems that comprise a profile. The domain configuration also includes the definition of socket groups and the server group definitions.
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