Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.2 Guía de instalación descargar pdf (Pagina 18)

Figure 1.4. Fibre Channel Switch Fencing Example

Specifying a fencing method consists of editing a cluster configuration file to assign a

fencing-method name, the fencing agent, and the fencing device for each node in the cluster.

The way in which a fencing method is specified depends on if a node has either dual power

supplies or multiple paths to storage. If a node has dual power supplies, then the fencing

method for the node must specify at least two fencing devices — one fencing device for each

power supply (refer to Figure 1.5, “Fencing a Node with Dual Power Supplies”). Similarly, if a

node has multiple paths to Fibre Channel storage, then the fencing method for the node must

specify one fencing device for each path to Fibre Channel storage. For example, if a node has

two paths to Fibre Channel storage, the fencing method should specify two fencing devices —

one for each path to Fibre Channel storage (refer to Figure 1.6, “Fencing a Node with Dual Fibre

Channel Connections”).

Chapter 1. Red Hat Cluster Suite Overview

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Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.2 Guía de instalación Pagina 18