[Pacemaker] double stonith device

Lars Marowsky-Bree lmb at novell.com
Mon Apr 4 19:21:36 EDT 2011

On 2011-04-04T15:34:16, Christian Zoffoli <czoffoli at xmerlin.org> wrote:

> I cannot connect both PSUs to a single PDU without loosing power source
> reduncancy (I have dual UPS, dual power lines and so on).

Yes. Because the alternative is to lose the ability to fence the node if
you lose one of the fencing devices. (I assume you'd be unable to
confirm the fence if one of them was without power?)

You need to look at the larger picture: even though each node is only
on one power supply, the whole cluster is on two.

Alternatively, use a mechanism like SBD which doesn't fence via the
power device, but uses the shared storage.


Architect Storage/HA, OPS Engineering, Novell, Inc.
SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg)
"Experience is the name everyone gives to their mistakes." -- Oscar Wilde

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