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<div class="moz-cite-prefix">On 07/24/2017 05:15 PM, Tomer Azran
wrote:<br>
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I still don't understand why the qdevice concept doesn't help on
this situation. Since the master node is down, I would expect
the quorum to declare it as dead.<br>
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Why doesn't it happens?</div>
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That is not how quorum works. It just limits the decision-making to
the quorate subset of the cluster.<br>
Still the unknown nodes are not sure to be down.<br>
That is why I suggested to have quorum-based watchdog-fencing with
sbd.<br>
That would assure that within a certain time all nodes of the
non-quorate part<br>
of the cluster are down.<br>
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<div class="gmail_quote">On Mon, Jul 24, 2017 at 4:15 PM +0300,
"Dmitri Maziuk" <span dir="ltr">
<<a href="mailto:dmitri.maziuk@gmail.com" target="_blank"
moz-do-not-send="true">dmitri.maziuk@gmail.com</a>></span>
wrote:<br>
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<pre>On 2017-07-24 07:51, Tomer Azran wrote:
> We don't have the ability to use it.
> Is that the only solution?
No, but I'd recommend thinking about it first. Are you sure you will
care about your cluster working when your server room is on fire? 'Cause
unless you have halon suppression, your server room is a complete
write-off anyway. (Think water from sprinklers hitting rich chunky volts
in the servers.)
Dima
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<pre class="moz-signature" cols="72">--
Klaus Wenninger
Senior Software Engineer, EMEA ENG Openstack Infrastructure
Red Hat
<a class="moz-txt-link-abbreviated" href="mailto:kwenning@redhat.com">kwenning@redhat.com</a>
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