Red Hat Summit 红帽全球峰会支持控制台（Console）开发人员开始试用联系人

此内容没有您所选择的语言版本。

1.7. About Domain Controller Discovery and Failover

When setting up a managed domain, each host controller must be configured with information needed to contact the domain controller. In JBoss EAP 6, each host controller can be configured with multiple options for finding the domain controller. Host controllers iterate through the list of options until one succeeds.
This allows host controllers to be pre-configured with contact information for a backup domain controller. A backup host controller can be promoted to master if there is a problem with the primary domain controller, allowing host controllers to automatically fail over to the new master once it’s been promoted.
The following is an example of how to configure a host controller with multiple options for finding the domain controller.

Example 1.1. Host controller configured with multiple domain controller options

<domain-controller>  
    <remote security-realm="ManagementRealm">  
          <discovery-options>  
              <static-discovery name="primary" host="172.16.81.100" port="9999"/>  
              <static-discovery name="backup" host="172.16.81.101" port="9999"/>  
          </discovery-options>  
    </remote>  
</domain-controller>
Copy to Clipboard Toggle word wrap
A static discovery option includes the following mandatory attributes:

name
The name for this domain controller discovery option
host
The remote domain controller's host name.
port
The remote domain controller's port.
In the example above, the first discovery option is the one expected to succeed. The second can be used in failover situations.
If a problem arises with the primary domain controller, a host controller that was started with the --backup option can be promoted to act as the domain controller.

Note

Starting a host controller with the --backup option will cause that controller to maintain a local copy of the domain configuration. This configuration will be used if the host controller is reconfigured to act as the domain controller.

Procedure 1.1. Promoting a host controller to be the domain controller

  1. Ensure the original domain controller has, or is, stopped.
  2. Use the Management CLI to connect to the host controller that is to become the new domain controller.
  3. Execute the following command to configure the host controller to act as the new domain controller. 
    /host=HOST_NAME:write-local-domain-controller/host=HOST_NAME:write-local-domain-controller/host=HOST_NAME:write-local-domain-controller
    Copy to Clipboard Toggle word wrap
  4. Execute the following command to reload the host controller. 
    reload --host=HOST_NAMEreload --host=HOST_NAME
    Copy to Clipboard Toggle word wrap
The host controller chosen in step 2 will now act as the domain controller.
Report a bug
返回顶部
Red Hat logoGithubredditYoutubeTwitter

学习

尝试、购买和销售

社区

关于红帽文档

通过我们的产品和服务，以及可以信赖的内容，帮助红帽用户创新并实现他们的目标。 了解我们当前的更新.

让开源更具包容性

红帽致力于替换我们的代码、文档和 Web 属性中存在问题的语言。欲了解更多详情，请参阅红帽博客.

關於紅帽

我们提供强化的解决方案，使企业能够更轻松地跨平台和环境（从核心数据中心到网络边缘）工作。

Theme

© 2025 Red Hat