On Thu, 2007-02-15 at 09:07 +0000, Patrick Caulfield wrote: > Frederik Ferner wrote: > > On Wed, 2007-02-14 at 16:33 +0000, Patrick Caulfield wrote: > >> Frederik Ferner wrote: > >>> I've just discovered that I seem to have the same problem on one more > >>> cluster, so maybe I've change something that causes this but did not > >>> affect a running cluster. I'll append the cluster.conf for the original > >>> cluster as well. > >>> > >> Looking at the tcpdump it seems that the existing node isn't seeing the joinreq > >> message from the fenced one - there are no responses to it at all. You haven't > >> enabled any iptables filtering have you ? > > > > But they seem to reach the network card at least, correct? So I don't > > have to start looking at the switch, should I? > > Well, they are reaching tcpdump - more than that is hard to say ;-) > You could try running tcpdump on the two machines to see if the packets are the > same on both...if so then it could be some strange bug in cman that we've not > seen before that's preventing it seeing incoming packets (I have no idea what > that might be though, off hand) I've had a look at the tcpdump on both machines at the same time. The packets look identical to me. I've attached the two tcpdump files, maybe someone can see a difference that I'm missing. > It would be interesting to know - though you may not want to do it - if the > problem persists when the still-running node is rebooted. Obviously not at the moment, but I have a maintenance window upcoming soon where I might be able to do that. I'll keep you informed about the result. Thanks for looking into that, Frederik -- Frederik Ferner Systems Administrator Phone: +44 (0)1235-778624 Diamond Light Source Fax: +44 (0)1235-778468 -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
