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On Thu, September 4, 2008 06:00, Graeme Fowler wrote:
> On Tue, 2008-09-02 at 15:52 -0500, David Dyer-Bennet wrote:
>> Still trying to get my first LVS config going.
>
> ...starting with a rather complex setup, if you don't mind me saying so!
That's a conclusion I have reached myself, and I'm currently working to
remove Xen from the picture on the LVS node for the initial test (can't do
it for the actual implementation, employer won't stand for giving up half
the cluster to load-balancing).
> If you run tcpdump on the Xen bridge interface logically "facing" the
> realserver VMs, do you see any packets being forwarded? I don't think
> you do, but if you could clarify that it'd help.
Have not gone to packet tracing yet, but will if I'm still blocked after
removing Xen.
> I've a sneaking suspicion this is happening because the VMs appear local
> to dom0 - because they are local, since all domU instances are logically
> "underneath" dom0. Although... reading back, you say:
>
>> Everybody involved in this setup (lvs nodes and real server nodes) is
>> a XEN dom0 at the moment
>
> "a"? Singular? That doesn't mesh with the config you've shown us; it
> looks like the realservers are "separated" - either physically or via
> domU.
4 systems, all with Xen installed. Currently I'm only running things in
dom0, in an attempt to keep things simple. The actual deployment plan is
more complex (running both Windows and Linux services on the physical real
servers, and somehow (localnode feater or Xen) running some services on
the physical box with the LVS).
> A bit of clarification, if you please!
Hope this helps. And as I said above, I'm currently changing the test
environment still more, trying to remove Xen from the primary LVS node.
(I will succeed at removing Xen; if necessary I will reinstall from
scratch without Xen.) Because, having encountered this level of trouble,
I agree that simplifying the test environment is a very good place to
start.
--
David Dyer-Bennet, dd-b@xxxxxxxx; http://dd-b.net/
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Dragaera: http://dragaera.info
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