[Linux-HA] question regarding quorumd
sebastia at l00-bugdead-prods.de
Tue Nov 13 03:13:09 MST 2007
Andrew Beekhof <beekhof at gmail.com> wrote:
> On Nov 9, 2007, at 4:34 PM, Sebastian Reitenbach wrote:
> > Hi,
> > I did some tests with a two node cluster and a third one running a
> > quorumd.
> > I started the quorumd, and then the two cluster nodes.
> > The one that became DC, started to communicate with the remote
> > quorumd.
> The CRM (and thus the "DC") doesn't know anything about quorumd
> I believe this is purely the domain of the CCM and I've no idea how
> that works :-)
> We just consume membership data from it...
> So anyway, my point is that the fact that a node is the DC is
> irrelevant when it comes to quorumd.
but somehow the cluster knows, as only the DC is communicating with the
external quorumd. I just do not understand, why the cluster does not retry
to re-contact the quorumd after it lost connection to it. This was what I
assumed, after a disconnect to the remote quorumd, the cluster nodes should
try to contact it, and when the contact is there again, use it again.
> > I killed the DC, saw the other becoming DC, and start communicating
> > to the remote quorumd, all fine, cluster still with quorum.
> > Then I killed the quorumd itself, the DC recognized, and started to
> > stop
> > all resource, because of the quorum_policy, as it lost quorum.
> > Then I restarted the quorumd again, but the DC, still without quorum,
> > did not tried to communicate to the quorumd again.
> > I'd expect the still living DC to try to contact the quorumd, in
> > case it
> > comes back.
> > If there is a good reason, why the DC is not trying to reconnect to
> > the
> > remote quorumd I'd really like to get enlightened from someone who
> > knows.
> > kind regards
> > Sebastian
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> > See also: http://linux-ha.org/ReportingProblems
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