Installation guide

Before Configuring a Red Hat
Cluster
This chapter describes tasks to perform and considerations to make before installing and
configuring a Red Hat Cluster, and consists of the following sections:
• Section 1, “Compatible Hardware”
• Section 2, “Enabling IP Ports”
• Section 3, “Configuring ACPI For Use with Integrated Fence Devices”
• Section 4, “Configuring max_luns”
• Section 5, “Considerations for Using Quorum Disk”
• Section 6, “Multicast Addresses”
• Section 7, “Considerations for Using Conga”
• Section 8, “General Configuration Considerations”
1. Compatible Hardware
Before configuring Red Hat Cluster software, make sure that your cluster uses appropriate
hardware (for example, supported fence devices, storage devices, and Fibre Channel switches).
Refer to the hardware configuration guidelines at http://www.redhat.com/cluster_suite/hardware/
for the most current hardware compatibility information.
2. Enabling IP Ports
Before deploying a Red Hat Cluster, you must enable certain IP ports on the cluster nodes and
on computers that run luci (the Conga user interface server). The following sections specify the
IP ports to be enabled and provide examples of iptables rules for enabling the ports:
• Section 2.1, “Enabling IP Ports on Cluster Nodes”
• Section 2.2, “Enabling IP Ports on Computers That Run luci”
• Section 2.3, “Examples of iptables Rules”
2.1. Enabling IP Ports on Cluster Nodes
To allow Red Hat Cluster nodes to communicate with each other, you must enable the IP ports
assigned to certain Red Hat Cluster components. Table 2.1, “Enabled IP Ports on Red Hat
Chapter 2.
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