Installation guide

Chapter 2. 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 2.1, “Compatible Hardware”
Section 2.2, “Enabling IP Ports”
Section 2.3, “Configuring ACPI For Use with Integrated Fence Devices”
Section 2.4, “Configuring max_luns”
Section 2.5, “Considerations for Using Quorum Disk”
Section 2.7, “Considerations for Using Conga”
Section 2.8, “General Configuration Considerations”
2.1. 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.
2.2. 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). T he following sections specify the IP ports to
be enabled and provide examples of iptables rules for enabling the ports:
Section 2.2.1, “Enabling IP Ports on Cluster Nodes”
Section 2.2.2, “Enabling IP Ports on Computers That Run luci”
Section 2.2.3, “Examples of iptables Rules”
2.2.1. 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 Cluster Nodes” lists the
IP port numbers, their respective protocols, the components to which the port numbers are assigned,
and references to iptables rule examples. At each cluster node, enable IP ports according to
Table 2.1, “Enabled IP Ports on Red Hat Cluster Nodes”. (All examples are in Section 2.2.3, “Examples of
iptables Rules”.)
Chapter 2. Before Configuring a Red Hat Cluster
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