Could you use an external cluster manager like Pacemaker (http://www.clusterlabs.org/#2) to detect a failed node and move traffic to other nodes. Pacemaker could also start a recovery instance. Pacemaker is available from EPEL-compiled versions of Linux.
I would really like to hear opinions on this strategy especially from guys with networking expertise. We are building messaging in the cloud and this is a strong contender. --- On Tue, 10/19/10, Jason Stelzer <[email protected]> wrote: > From: Jason Stelzer <[email protected]> > Subject: Re: Options for clustering/multicast > To: "Alan Conway" <[email protected]> > Cc: [email protected] > Date: Tuesday, October 19, 2010, 10:57 AM > What if I setup a gre tunnel between > the 2 hosts with the mtu set low > enough that it doesn't fragment the packets? At that point > I could > configure corosync to multicast to the virtual interface > and work > around the dodgy switch. > > On Tue, Oct 19, 2010 at 11:19 AM, Alan Conway <[email protected]> > wrote: > > On 10/19/2010 10:56 AM, Jason Stelzer wrote: > >> > >> I am setting up a 2 node cluster using the C++ > qpidd 0.5 on fedora 12. > >> This is primarily for failover. > >> > >> I'm in a situation where one of our hardware > vendors is not handling > >> multicast correctly. > >> > >> As an interim solution, is it possible to cluster > via unicast? My > >> understanding is that the corosync library uses > multicast and that > >> qpidd relies on that working correctly. This seems > to imply that > >> unicast is not possible, but I figured I'd ask and > see if I get a > >> definitive answer one way or the other. > >> > > > > No, there's not currently a way to run clustering over > unicast. > > > > > > -- > J. > > --------------------------------------------------------------------- > Apache Qpid - AMQP Messaging Implementation > Project: http://qpid.apache.org > Use/Interact: mailto:[email protected] > > --------------------------------------------------------------------- Apache Qpid - AMQP Messaging Implementation Project: http://qpid.apache.org Use/Interact: mailto:[email protected]
