[Linux-HA] methods of dealing with network failover

[Andrew Beekhof]

On 1/11/07, Marshal Newrock <marshal at idealso.com> wrote:
> On Wed, 10 Jan 2007 11:39:40 +0100
> "Andrew Beekhof" <beekhof at gmail.com> wrote:
>
> > > Sounds good.  So, if I were to set no_quorum_policy to freeze
> > > instead of stop, then if the heartbeat link fails, services will
> > > continue to run but it will not attempt to gain control of services
> > > on the other machine.
> >
> > for that you would need no_quorum_policy=freeze
> >
> > but i still dont think that helps you because 2 node clusters _always_
> > have quorum (so this particular policy will never take effect)
>
> So, if I'm understanding correctly, if I have a two node cluster, and
> the nodes lose communication with each other, they both still think
> they have quorum?  I would have expected that with half of the cluster
> missing, there would be no quorum.

there is a special hack in the CCM to make it pretend otherwise
(otherwise haresources based clusters wont function)