Starting the Red Hat Cluster Manager GUI
After configuring the java browser plugin, start the Cluster Manager GUI by specifying the appropriate URL to the browser. The GUI's URL consists of either the cluster member name or cluster alias, followed by "/Cluster". For example, using the cluster alias from the preceding example, the corresponding URL would be http://clu2alias/Cluster. When the GUI applet starts up, a splash screen will appear on the right and a tree view on the left. To begin cluster monitoring, double-click the Clusters label within the tree view, which will reveal the cluster name (as initially configured using cluconfig).
By double-clicking on the cluster name within the tree view, the right side of the GUI will then fill with cluster statistics, as shown in Figure 9-2. These statistics depict the status of the cluster members, the services running on each member, and the heartbeat channel status.
By default, the cluster statistics will be refreshed every 5 seconds. Clicking the right mouse button on the cluster name within the tree view will load a dialog allowing modification of the default update interval.
Viewing Configuration Details
After initiating cluster monitoring, it is possible to obtain detailed configuration information by double-clicking on any of the cluster status items. Following the prior example, double click on the nfs_samba1 service and the Service Information window will appear as seen in Figure 9-3:
In Figure 9-3, notice that the detailed device information appears after clicking on the individual device parameters.
In addition to obtaining detailed configuration information related to cluster services, it is also possible to view the configuration of individual cluster members and heartbeat channels by double-clicking within the relevant section of the GUI.