Red Hat CLUSTER FOR ENTERPRISE LINUX 5.0 Guida di Installazione Scaricare il pdf (Pagina 27)

Fig u re 4 .2. St o rag e Fen cin g Examp le

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 4.3, “ 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 4.4, “ Fencing a Node with Dual Fibre Channel Connections” ).

⁠Chapt er 4 . Fencing

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Red Hat CLUSTER FOR ENTERPRISE LINUX 5.0 Guida di Installazione Pagina 27