[ClusterLabs] Antw: [EXT] Stonith failing

Jehan-Guillaume de Rorthais jgdr at dalibo.com
Mon Aug 17 16:39:19 EDT 2020

On Mon, 17 Aug 2020 10:19:45 -0500
Ken Gaillot <kgaillot at redhat.com> wrote:

> On Fri, 2020-08-14 at 15:09 +0200, Gabriele Bulfon wrote:
> > Thanks to all your suggestions, I now have the systems with stonith
> > configured on ipmi.  
> A word of caution: if the IPMI is on-board -- i.e. it shares the same
> power supply as the computer -- power becomes a single point of
> failure. If the node loses power, the other node can't fence because
> the IPMI is also down, and the cluster can't recover.
> Some on-board IPMI controllers can share an Ethernet port with the main
> computer, which would be a similar situation.
> It's best to have a backup fencing method when using IPMI as the
> primary fencing method. An example would be an intelligent power switch
> or sbd.

How SBD would be useful in this scenario? Poison pill will not be swallowed by
the dead node... Is it just to wait for the watchdog timeout?


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