3.3. The Cluster Configuration Tool

Red Hat Cluster Manager consists of the following RPM packages:

You can use either of the following methods to access the Cluster Configuration Tool:

The first time that the application is started, the Cluster Configuration Tool is displayed. After you complete the cluster configuration, the command starts the Cluster Status Tool by default. To access the Cluster Configuration Tool from the Cluster Status Tool, select Cluster => Configure.

Figure 3-4. The Cluster Configuration Tool

The following tabbed sections are available within the Cluster Configuration Tool:

The Cluster Configuration Tool stores information about the cluster service and daemons, cluster members, and cluster services in the /etc/cluster.xml configuration file. The cluster configuration file is created the first time the Cluster Configuration Tool is started.

Save the configuration at any point (using File => Save) while running the Cluster Configuration Tool. When File => Quit is selected, it prompts you to save changes if any unsaved changes to the configuration are detected.


When you save the cluster configuration for the first time using the Cluster Configuration Tool and exit the application, the next time you the cluster (either by choosing Main Menu => System Settings => Server Settings => Cluster or by running redhat-config-cluster from a shell prompt) the Cluster Status Tool will display by default. The Cluster Status Tool displays the status of the cluster service, cluster members, and application services, and shows statistics concerning service operation. If you need to further configure the cluster system, choose Cluster => Configure from the Cluster Status Tool menu.

The Cluster Configuration Tool) is used to configure cluster members, services, and cluster daemons. The Cluster Status Tool is used to monitor, start and stop the cluster members and services on particular members, and move an application service to another member.

The Cluster Configuration Tool uses a hierarchical tree structure to show relationships between components in the cluster configuration. A triangular icon to the left of a component name indicates that the component has children. To expand or collapse the portion of the tree below a component, click the triangle icon.

Figure 3-5. Cluster Configuration Tool

To display the properties of a component, select the component and click Properties. As a shortcut, you can display the properties of a component by double-clicking on the component name.

To view or modify the properties of the cluster daemons, choose Cluster => Daemon Properties.