On Tue, Jul 22, 2008 at 08:25:50AM -0700, Joseph Mack NA3T wrote:
> On Tue, 22 Jul 2008, Marco Lorig wrote:
>> Both "directors" are connected via GRE. The first director starts
>> routing to the second one through the tunnel as soon as the realservers
>> behind it aren´t available anymore. So it "turns off" the ipvsadm and
>> switches itself to a routing instance.
> How do the clients know which datacenter to route to?
>> The second director, which also serves clients and servers at its
>> location by ipvsadm, starts another ipvsadm instance on the GRE
>> interface and is receiving routed packets from the first director
>> through GRE tunnel.
What forwarding mechanism are you using on the second director,
and are any of its real-servers local (i.e. an address that
belongs to the second real server).
I only ask so that I can try and reproduce the problem.
> I see.
> can you set mss on this interface?
That does sound like a work-around worth trying to me.
> ip_vs() does all sorts of things to the interface. I don't expect anyone
> has tried LVS on a gre interface.