[Linux-HA] question regarding quorumd

[Sebastian Reitenbach]

Hi,

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.

kind regards
Sebastian



> 
> >
> > 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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> 
>