Re: [lvs-users] LVS to run as a fail over (2 servers, active-passive) ho

To: "' users mailing list.'" <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] LVS to run as a fail over (2 servers, active-passive) how?
From: "Adam Niedzwiedzki" <adstar@xxxxxxxxxxx>
Date: Wed, 19 Dec 2007 09:14:33 +1100
Hi Joe,

If only it was that simple :(
I have to have a lot of things playing nice on this machine, and adding
Linux-HA might "not" work :(.
I say "not" because of my setup. (I have one machine doing all the work,
router/firewall and load balancer)

        eth0 (/30) - Router/Firewall - eth1 (/25) - (switch) -
                                eth2 - (switch) - (LVS network) (nat'd via

I'm running shorewall for my firewall, keepalived (lvs) via fwmark for my
load balancing (that took some hair pulling to figure out).

I'm not sure if I can even fit Linux-HA into the mix as well? 
I'll go do some reading on heartbeat (I'm not familiar with it).


P.S I wonder if I could convince the LVS dev's to put out a ds scheduler
(Dead Server) :P Use all the framework for real servers etc, but just does
the same as HA I guess, send all requests to one box, if it goes down send
to the other, when it comes back move the traffic back. Would work in quite
nice with keepalived *shrug*

-----Original Message-----
From: lvs-users-bounces@xxxxxxxxxxxxxxxxxxxxxx
[mailto:lvs-users-bounces@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Joseph Mack
Sent: Tuesday, 18 December 2007 11:19 PM
To: users mailing list.
Subject: Re: [lvs-users] LVS to run as a fail over (2 servers,
active-passive) how?

On Tue, 18 Dec 2007, Adam Niedzwiedzki wrote:

> I have another client that has requested just a basic failover solution,
> they don't want to load balance across their serves they just want

use Linux-HA

> How do I setup LVS (or the config in keepalived) to do this.

LVS is a loadbalancer. You're asking how to set up LVS so 
that it doesn't loadbalance. It would be simpler to use 
Linux-HA. Make sure any writes to the active server get 
written before failover.


Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at
Homepage It's GNU/Linux!

<Prev in Thread] Current Thread [Next in Thread>