You can use either of the following methods to access the
Cluster Configuration Tool:
If this is the first time you have started the Cluster Configuration Tool, the program prompts
you to either open an existing configuration or create a new one.
Click Create New Configuration to start a
new configuration file.
Figure 3-1. Starting a New Configuration File
The following sections are available within the Cluster Configuration Tool:
Figure 3-2. The Cluster Configuration Tool
Cluster Nodes — Use this section
to add members to the cluster and optionally configure a power
controller connection for any given member.
Fence Devices — Use this section
to establish one or more devices or methods to control each node in
a cluster, which maintains cluster availability and integrity.
Managed Resources — Use this
section to configure one or more resources to be controlled and
configured for the cluster.
Failover Domains — Use this
section to configure one or more subsets of cluster nodes used to
run a service in the event of a node failure.
Resources — Use this section to
configure resources to be managed by the system. Choose from the
available list of filesystems, IP addresses, NFS mounts and
exports, and user-created scripts and configure them
Services — Use this section to
create and configure services that combine cluster resources,
nodes, and failover domains as needed.
The hierarchical relationships in the Cluster Configuration Tool reflect the
organization of the resource information in the /etc/cluster/cluster.conf file.
Do not manually edit the contents of the /etc/cluster/cluster.conf file unless you fully
understand the consequences of manual configuration.
Save your configuration at any point (using => ) while
running the Cluster Configuration Tool.
When => 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 configure the cluster (either by
choosing => => => or by running
system-config-cluster from a shell prompt)
the Management tab will appear along with
the Cluster Configuration tab. The
Configuration Tool displays the status of the cluster service
manager, cluster nodes, and resources, and shows statistics
concerning cluster service operation. If you need to further
configure the cluster system, choose the Cluster Configuration tab.
The Cluster Configuration Tool uses a
hierarchical 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 resources
configured. To expand or collapse the portion of the tree below a
component, click the triangle icon.
Figure 3-3. Cluster Configuration Tool
For example, to configure an existing node, click the triangle
icon next to the Cluster Nodes property and
select the node. Three buttons appear in the Properties portion of the window. Click Edit Node Properties.
Figure 3-4. Node Properties