-----Original Message----- From: linux-cluster-bounces redhat com on behalf of Mikko Partio Sent: Mon 10/22/2007 9:41 AM To: linux-cluster redhat com Subject: [Linux-cluster] Re: Two-node cluster disconnecting On 10/16/07, Mikko Partio <mpartio gmail com> wrote: > > > > On 10/11/07, Mikko Partio <mpartio gmail com> wrote: > > > > Hello list > > > > I have a problem with a two-node cluster going split-brain. When I first > > boot the other node, it correctly starts all the services and informs that > > cluster is quorate. Then when I boot the other node, on the boot phase > > when it starts the cluster software it does not find the node already > > running and starts the same services already running on node 1! When the > > boot is complete I can see that the nodes have found each other for a small > > period of time but then immediately disconnect from each other. The > > cluster is created with Conga with shared disk support though no shared > > disks are created yet. This is on CentOS 5. > > > > cluster.conf: > > > Anybody got a clue? Also, should I be configuring ais.conf also? There is > no mention about it in the docs but if cman is using openais, I'd guess it > should be configured with the correct addresses right? > > Regards > > M > To finish up this monologue; one should not configure openais (/etc/ais/openais.conf) nor start it at boot time. Also make sure your multicast packets are coming through (pinging 188.8.131.52 is not enough). Regards M Make sure you have correct /etc/hosts on both nodes, with all interfaces/names on your nodes defined.