Re: Feedback wanted: health warning when standby MDS dies?

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> Op 18 oktober 2016 om 14:06 schreef Dan van der Ster <dan@xxxxxxxxxxxxxx>:
> 
> 
> +1 I would find this warning useful.
> 

+1 Probably make it configurable, say, you want at least X standby MDS to be available before WARN. But in general, yes, please!

Wido

> 
> 
> On Tue, Oct 18, 2016 at 1:46 PM, John Spray <jspray@xxxxxxxxxx> wrote:
> > Hi all,
> >
> > Someone asked me today how to get a list of down MDS daemons, and I
> > explained that currently the MDS simply forgets about any standby that
> > stops sending beacons.  That got me thinking about the case where a
> > standby dies while the active MDS remains up -- the cluster has gone
> > into a non-highly-available state, but we are not giving the admin any
> > indication.
> >
> > I've suggested a solution here:
> > http://tracker.ceph.com/issues/17604
> >
> > This is probably going to be a bit of a subjective thing in terms of
> > whether people find it useful or find it to be annoying noise, so I'd
> > be interested in feedback from people currently running cephfs.
> >
> > Cheers,
> > John
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