Hi, On Wed, Aug 25, 2010 at 08:46:22AM -0500, [email protected] wrote: > On Wed, 25 Aug 2010, Dejan Muhamedagic wrote: > > > On Wed, Aug 25, 2010 at 07:53:25AM -0500, [email protected] wrote: > >> On Wed, 25 Aug 2010, Dejan Muhamedagic wrote: > >> > >>> On Tue, Aug 24, 2010 at 11:00:29AM -0500, [email protected] wrote: > >>>> On Tue, 24 Aug 2010, Dejan Muhamedagic wrote: > >>>> > >>>>> Hi, > >>>>> > >>>>> On Mon, Aug 23, 2010 at 12:52:38PM -0500, [email protected] wrote: > >>>>>> I have two older desktop pcs that I have set up with drbd, corosync > >>>>>> and pacemaker > >>>>>> No problems there > >>>>>> My hat is off to y'all > >>>>>> Great software > >>>>>> I have set up the colocation rules so that all apps run on one machine > >>>>>> or the other > >>>>>> If I break the communication link between them I get split-brain > >>>>>> So I figure stonith suicide is my only option > >>>>> > >>>>> suicide is not an option at all. You need a proper fencing > >>>>> device. And you need redundant communication links. > >>>>> > >>>> > >>>> I have no say in the matter > >>>> That is what I was given to work with > >>>> I think suicide is better that nothing at all > >>>> I am just having a bit of trouble getting it to work properly > >>> > >>> No wonder. suicide cannot work for split-brain. Think about it. > >>> > >> > >> Think about it > >> Hmmmmmmmmmmmmmmmmmmmmmmmmmmmmm > >> Got nothing > > > > :) There is split-brain. Nodes can't talk to each other anymore. > > How does a node shoot the other one using suicide? > > With only my one good brain cell is thought the suicide plugin was able to > terminate the host it was running on and did not depend on communication > with other hosts
But who's to order the fencing action? The node itself? Then both nodes commit suicide. Or neither. Or perhaps they can each throw a penny to decide. When split-brain occurs each node will want to shoot the other one. Unless they suffer from severe depression. > >> Since I only have the 2 pcs and there is not a chance of > >> getting more equipment What might you suggest > > > > Explain the management/client all the possible consequences of > > running a (two-node) cluster without fencing. Then get a fencing > > device. That stuff is really not so expensive anymore. > > > > Been done > They laughed more than you did and wanted to dock my pay for wasting time Well, needless to say, educating the management has never been easy. But I really don't understand how they expect an HA solution without expending a few hundred bucks on two more NICs and two fencing devices. Good luck! Thanks, Dejan > Thanks > Richard > > > Thanks, > > > > Dejan > > > >> _______________________________________________ > >> Linux-HA mailing list > >> [email protected] > >> http://lists.linux-ha.org/mailman/listinfo/linux-ha > >> See also: http://linux-ha.org/ReportingProblems > > _______________________________________________ > > Linux-HA mailing list > > [email protected] > > http://lists.linux-ha.org/mailman/listinfo/linux-ha > > See also: http://linux-ha.org/ReportingProblems > > > > -- > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
