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Re: Windows Multi-node RAC (VMware)

From: Howard J. Rogers <howardjr2000_at_yahoo.com.au>
Date: Tue, 24 Dec 2002 17:29:12 +1100
Message-ID: <D%SN9.9202$jM5.25838@newsfeeds.bigpond.com>

"Billy Verreynne" <vslabs_at_onwe.co.za> wrote in message news:au8tj4$d7a$1_at_ctb-nnrp2.saix.net...
> Howard J. Rogers wrote:
>
> > Yeah, but we're dealing with totally non-standard, non-certified
> > implementations of some fairly exotic configurations here. And I guess
> > we're at the mercy of VMware and how it does its stuff.
>
> Granted.. but VMware is still utterly kewl. I use Vmware and then VNC as
the
> desktop interface to the VMs. Geek candy. :-)
>
> > No, 'fraid not. There's something about bridged networking which means
> > that the two nodes don't communicate with each other properly.
>
> Interesting. Have this problem been bounced off the VMware guys? They are
a
> keen bunch.

Wouldn't know. Didn't write the paper. But when I mentioned the paper to them, they showed polite interest and not much else.

>
> > And I just want to clarify: it makes not a jot of difference to
multi-Node
> > RAC whether you specify fixed IP addresses or whether you make use of
the
> > cirtual DHCP server that VMware supplies.
>
> Yep. On the clusters I worked with, we had a bunch of internal IPs (one
per
> cluster node), and a single public IP for the cluster. We even used
> different IP classes (the cluster network in effect ran a private LAN).
The
> public IP connections were routed (using a very basic load-balancing
> algorythm) to the least busiest node. Thus IP addresses as you say, is not
> an issue.
>
> > It simply doesn't work with anything other than host-only networking.
> > God knows why, but that's the way it is.
>
> This is really strange...
>

Go for it. I'm sure Harrison would love to know the workaround.

As I understand it, he took 3 months to get the thing working, and the one thing that made all the difference was suddenly deciding not to use bridged networking.

Regards
HJR
> > I don't think you need to be a member (but I could be wrong). It's just
> > www.oaktable.net and then click the Files link.
> >
> > There are two of them: one on single-node-multi-instance-RAC (easy) and
> > one on multi-node-single-instance-per-node-RAC (much, much harder).
> > (incidentally, the single-node-multi-instance version works just fine
and
> > dandy with bridged networking. The multi-node version doesn't).
>
> Thanks Howard, I will take a look and satisfy my curiosity. :-)
>
> --
> Billy
Received on Tue Dec 24 2002 - 00:29:12 CST

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