How to configure the use of SSH when using the fence_apc fencing agent?

Environment

Red Hat Enterprise Linux 5

Issue

How to configure the use of SSH when using the fence_apc fencing agent

Resolution

Use the secure="0" (to disable SSH) or secure="1" (to enable SSH) parameters.

Example entries from cluster.conf

<fencedevices>
        <fencedevice agent="fence_apc" ipaddr="1.1.1.1" login="ExampleCompany" name="ExampleAPC1" passwd="xxxxx" secure="1"/>
        <fencedevice agent="fence_apc" ipaddr="1.1.1.2" login="ExampleCompany" name="ExampleAPC2" passwd="xxxxx" secure="1"/>
</fencedevices>

Diagnostic Steps

If secure="on" is present in the cluster.conf, fencing may not occur.

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