[Linux-cluster] Fencing Device Question
Johannes Russek
johannes.russek at io-consulting.net
Wed Jun 4 12:15:42 UTC 2008
> My question is what (if anything) can RHCS/GFS do to determine the
> health/presence/operation of fencing devices? If it can do something
> to monitor the fencing devices, and discovers a bad fencing device,
> what will it do? For example, if I unplug the network cable for the
> heartbeat, the node will get fenced immediately. I never tested
> whether the same would happen if I unplugged a fencing device. I
> haven't delved into the documentation in a while, but I don't remember
> anything about a way to have redundant fencing devices, like a DRAC
> and a network power switch. Is there a way?
You should be able to add as many fencing devices as you like, cman
should go through them top to bottom, if it won't get a positive
response from the fencing script.
in my case i have IPMI, then network power switch, then fabric fencing.
Regards,
Johannes
>
> Thoughts, opinions, insight, documentation, etc would be greatly
> appreciated.
>
> --
> Brandon
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