[ClusterLabs] Antw: [EXT] Stonith failing

[Jehan-Guillaume de Rorthais]

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?

Regards,