Re: [lvs-users] No Application data in LVS

To: " users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] No Application data in LVS
From: Graeme Fowler <graeme@xxxxxxxxxxx>
Date: Mon, 26 Nov 2007 10:33:15 +0000

On Mon, 2007-11-26 at 10:27 +0100, Michael Schwartzkopff wrote:
> I am quite new to LVS and I wanted to understand it from the basics. So I set 
> up a LVS director according to the mini howto, NAT manual example

Good, that's a good way to start :)

> When I telnet from a client to the virtual server address I see:
> ---
> Connected to
> Escape character is '^]'.
> ---
> But no login line. The same with HTTP protocol. No Application data are 
> displayed in the client.

For HTTP there is no application banner - you connect, you send
something like "GET / HTTP/1.0" and hit return, twice.

What happens (using HTTP, ie. port 80 instead of telnet, port 23 in LVS)
if you point a web browser at your VIP?

Note also that your client *must* be on a different network to your
realserver for NAT to work. There are some additional, complex ways to
make it work if the clients and realservers are on the same network (IP
network, that is, ie. in the same broadcast domain).


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