Configuring Red Hat Cluster software consists of using configuration tools to specify the relationship among the cluster components. Figure 1.2, “Cluster Configuration Structure” shows an example of the hierarchical relationship among cluster nodes, high-availability services, and resources. The cluster nodes are connected to one or more fencing devices. Nodes can be grouped into a failover domain for a cluster service. The services comprise resources such as NFS exports, IP addresses, and shared GFS partitions.
The following cluster configuration tools are available with Red Hat Cluster:
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Conga — This is a comprehensive user interface for installing, configuring, and managing Red Hat clusters, computers, and storage attached to clusters and computers.
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system-config-cluster — This is a user interface for configuring and managing a Red Hat cluster.
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Command line tools — This is a set of command line tools for configuring and managing a Red Hat cluster.
A brief overview of each configuration tool is provided in the following sections:
In addition, information about using Conga and system-config-cluster is provided in subsequent chapters of this document. Information about the command line tools is available in the man pages for the tools.