Installation guide

Fencing device — A fencing device is required. A network power switch is recommended to
perform fencing in an enterprise-level cluster. For information about supported fencing devices,
see Appendix A, Fence Device Parameters.
Storage — Some type of storage is required for a cluster. Figure 1.1, “ Red Hat High Availability
Add-On Hardware Overview” shows shared storage, but shared storage may not be required for
your specific use.
Fig u re 1.1. Red Hat Hig h Availab ilit y Ad d - O n Hard ware O verview
1.4 . Inst alling Red Hat High Availabilit y Add-On soft ware
To install Red Hat High Availability Add-On software, you must have entitlements for the software. If
you are using the lu ci 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
Enterprise Linux software.
You can use the following yum i nstal l command to install the Red Hat High Availability Add-On
software packages:
# yum i nstal l rg manager l vm2-cluster g fs2-uti l s
⁠Chapt er 1 . Red Hat High Availabilit y Ad d- O n Co nfigurat ion an d Management Overview
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