Other options are available for storage according to the type of storage interface; for ex-
ample, iSCSI or GNBD. A Fibre Channel switch can be configured to perform fencing.
•
Storage — Some type of storage is required for a cluster. The type required depends on the
purpose of the cluster.
Figure 1.1. Red Hat Cluster Hardware Overview
1.2. Installing Red Hat Cluster software
To install Red Hat Cluster software, you must have entitlements for the software. If you are us-
ing the Conga configuration GUI, you can let it install the cluster software. If you are using other
tools to configure the cluster, secure and install the software as you would with Red Hat Enter-
prise Linux software.
1.3. Configuring Red Hat Cluster Software
Configuring Red Hat Cluster software consists of using configuration tools to specify the rela-
tionship among the cluster components. Figure 1.2, "Cluster Configuration Structure" shows an
example of the hierarchical relationship among cluster nodes, high-availability services, and re-
sources. The cluster nodes are connected to one or more fencing devices. Nodes can be
1.2. Installing Red Hat Cluster software
2