[lvs-users] "selective balancing" - make requests from go to realserver_A, all others - to realserver_B

Alex Attarian u2sashko at gmail.com
Fri Mar 7 17:18:48 GMT 2014

On Fri, Mar 7, 2014 at 3:53 AM, Ferenc Wagner <wferi at niif.hu> wrote:

> Patrick Schaaf <netdev at bof.de> writes:
> > 2014-03-07 11:52 GMT+01:00 Tomasz Chmielewski <tch at virtall.com>:
> >
> >> I was wondering if I can use ipvsadm not only for load balancing, but
> >> also for "code testing".
> >
> > The key to such usage, is fwmark based LVS virtual hosts. You then use
> > the iptables -t mangle PREROUTING to set firewall mark [...]
> Just a note: you don't *have to* use the mangle table (though oldish
> kernels restrict the MARK target to the mangle table), if you don't want
> to base your routing decision on fwmarks.  For LVS virtual services, you
> don't.
> --
> Regards,
> Feri.
I'm confused how this "iptables -t mangle -I PREROUTING -s -j
ACCEPT" sets a mark? Doesn't Tomasz need to set a mark (*-j MARK --set-mark
1)* and then tell ipvsadm to route based on fwmark? i.e.: ipvsadm -A -f 1
-s wrr -p 80 ?


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