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1.8. About Host Controller
A host controller is launched when the
domain.sh or domain.bat script is run on a host.
The primary responsibility of a host controller is server management. It delegates domain management tasks and is responsible for starting and stopping the individual application server processes that run on its host.
It interacts with the domain controller to help manage the communication between the servers and the domain controller. Multiple host controllers of a domain can interact with only a single domain controller. Hence, all the host controllers and server instances running on a single domain mode have a single domain controller and must belong to the same domain.
By default each host controller reads its configuration from the
domain/configuration/host.xml file located in the unzipped JBoss EAP 6 installation file on its host's filesystem. The host.xml file contains the following configuration information that is specific to the particular host:
- The names of the JBoss EAP 6 instances meant to run from this installation.
- Any of the following configurations:
- How the host controller contacts the domain controller to register itself and access the domain configuration.
- How to find and contact a remote domain controller.
- That the host controller is to act as the domain controller
- Configurations specific to the local physical installation. For example, named interface definitions declared in
domain.xmlcan be mapped to an actual machine-specific IP address inhost.xml. And abstract path names in domain.xml can be mapped to actual filesystem paths inhost.xml.
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