I'll do some experiments to see if I can get Corosync more reliable. I'm using Corosync v1 as part of cman-corosync-pacemaker. RRP with one port on a switch and the other port on a crossover cable between the two hosts (although technically each port is still part of a vSwitch since its a VMware VM).
I do have fence-agents installed, but on Centos its missing the the null and ssh devices. Andrew, if you mean I can have stonith devices without enabling stonith globally thereby making success optional I will try that out. That would be just what I need. Thanks all, Doug On Jun 20, 2013, at 1:38 AM, Sven Arnold <sven.arn...@localite.de> wrote: >>> >>> echo "0" > /sys/class/net/virbr0/bridge/multicast_snooping >> >> That results in multicast packets are broadcasted to all bridge ports. I >> prefer to have igmp querier turned on on a central switch. >> >> > > I had the impression that the OP used virtual machines on a local (virtual > and private) network. I had such a setup with my first experiments and > experienced (timing) issues with corosync messages until I turned snooping > off. > > But you are right, on my production system I have turned on both > multicast_snooping and multicast_querier. > > For reference, there was this bugreport that was helpful for me: > https://bugzilla.redhat.com/show_bug.cgi?id=880035 > > Regards, > > Sven > > > > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org _______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
