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Re: [Linux-cluster] Graceful Degradation



--- Gordan Bobic <gordan bobich net> wrote:

> Roger Pe�a wrote:
> 
> >>>>> I thinks this is question #1 in the FAQs and
> in
> >>>> this
> >>>>> list :-)
> >>>>>
> >>>>> the short anwser and the first place to look
> at
> >>>> is:
> >>>>> 1- fencing not configured or configured as
> >> manual
> >>>>> 2- fencing problems, the devices not working
> as
> >>>> they
> >>>>> should
> >>>> The problem is that I don't have any devices I
> >> could
> >>>> do fencing with. Is
> >>> you do not have:
> >>> 1- shared storage? usually, the "server" of the
> >> shared
> >>> storage have a way to cut the storage to a
> client,
> >> so
> >>> this can serve as a fencing device
> >>> 2- what kind of server do you have? HP servers
> has
> >>> iLo, SUN and Dell servers have something
> similar.
> >> so
> >>> those interfaces can act as fencing devices
> >> I have Dell servers, but nothing that can be used
> to
> >> monitor them.
> > So, those servers do not have support for DRAC or
> IPMI
> > ? that is sad
> > if they do, well, I guess you can reboot them
> remotely
> 
> They do have DRAC support, but I don't see how that
> can be used for 
> monitoring/fencing. Am I missing something?
I hear that you can give an IP to DRAC (bios?) and
through the DRAC interfase you can reboot, poweroff
and poweron the server
yesterday I search in google about DRAC reboot and I
got some nice pages

then use the fence_drac script to fence the devices
I use that script to fence the blades in an DELL
enclousure.

cu
roger


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