Re: Failover(?) using VS-NAT?

To: Wayne <wayne@xxxxxxxxxxxxxxx>
Subject: Re: Failover(?) using VS-NAT?
Cc: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
From: Dayton Turner <turnerd@xxxxxxxxxx>
Date: Mon, 14 Aug 2000 14:49:31 -0700
By any chance are there any solutions around this (without using NAT maybe?)
Its not that huge of a deal, I was just wondering how big of an issue people
made it, and if say TUN or DR handled it properly.


Wayne wrote:

> A connection is between the client and VIP on the LVS box.
> Even any commercial load balancer if using VIP will do the
> same -- the connection would be dead.  It is up to the client
> to click on the "reload" button to get new connection going.
> At 12:55 PM 8/14/00 -0700, Dayton Turner wrote:
> >Hi There, I've just set up a 2machine load balanced webserver using
> >VS-NAT, everything works great, I only have one concern. I decided to
> >see what would happen if i unplugged the lan cable from machine 2, and
> >sent a request to the director. Sure enough, it just sat there waiting
> >for a connection. Just like I hoped. Now, I'll remove the ipvsadm entry
> >for that machine, hoping the request will fall over onto machine 1. Such
> >things do not happen. I figured this was important in the real world if
> >a machine went down before the monitoring program found out, and someone
> >had requested a page before the machine was pulled from the pool. Anyone
> >know a way to make dead existing connections fall over to a working
> >webserver?
> >
> >Thanks
> >Dayton
> >
> >--
> >                             `~ ~'
> >                              O.O
> >---------------------------UUU-V-UUU---------------------------------
> >Dayton Turner                   UNIX Systems and Network Administrator
> >E-Mail: turnerd@xxxxxxxxxx      Cell: (604) 809-7742
> >WWW:     Richmond, BC, Canada
> >
> >
> >
> >

                             `~ ~'
Dayton Turner                   UNIX Systems and Network Administrator
E-Mail: turnerd@xxxxxxxxxx      Cell: (604) 809-7742
WWW:     Richmond, BC, Canada

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