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Re: [lvs-users] question about LVS

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] question about LVS
Cc: "L.S. Keijser" <leon@xxxxxxxx>
From: Graeme Fowler <graeme@xxxxxxxxxxx>
Date: Tue, 04 May 2010 10:52:34 +0100
On Tue, 04 May 2010 11:41:00 +0200, Michiel van Es <mve@xxxxxxxxxxxxxxxxx>
wrote:
> I am now using LVS with a simple script on the LVS DR and the 2 real 
> servers so all tweaks and arptable issues are in 1 bash script.
> That script is called at startup.

Good.

> It is quicker to reinstall a server with cherokee with websites , SSL, 
> Mysql replication, Gluster node and Qmail then trying to find the issue 
> with the arp table?

Nobody has suggested that. The suggestion was to go back to baics with
LVS, which you've done.

I for one would greatly appreciate some acknowledgement of the fact that
people are trying to *help*, rather than arguing. We (allegedly) know what
we're doing, hence the suggestions.

> If there is something wrong it is perhaps something with iptables, 
> routing or arptables.

No, there is something wrong with your setup.

It is worth pointing out here that using ARPing from your realservers is
*not* a valid test. Ideally you need an off-net client to test with, or a
client on the same net which does not participate.

As it stands, your ARPing results show the same MAC address for the VIP
from both servers (your realservers?) which is a good start. Howvere what
you didn't show us is whether that's the MAC for a realserver, the
director, or some other layer 3 device on the same subnet...

Now you've got a basic setup, what happens?

Graeme

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