[lvs-users] LVS-DR on default gateway

Michael Ben-Nes michael at epoch.co.il
Wed Jan 20 18:51:07 GMT 2010


Hi,

Why do you want to use the LVS-DR if the traffic thats get out pass through
it again?
Why not use LVS-NAT ?

Best,
Miki


On Wed, Jan 20, 2010 at 6:38 PM, Dennis J. <dennisml at conversis.de> wrote:

> I'm not dealing with the arp problem but the martian problem that only
> occurs when the director is also the default gateway/router.
> I'm wondering though why Red Hat recommends using aprtables_jf when adding
> a few lines to sysctl.conf seems to be so much simpler and less invasive.
>
> Regards,
>    Dennis
>
> On 01/20/2010 04:57 PM, Michael Ben-Nes wrote:
> > Hi Keijser,
> >
> > Is there problem with the way RedHat suggest?
> >
> http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html/Virtual_Server_Administration/s1-lvs-direct-VSA.html#s2-lvs-direct-arptables-VSA
> >
> > Miki
> >
> > On Wed, Jan 20, 2010 at 4:03 PM, L.S. Keijser<leon at linux.nl>  wrote:
> >
> >> Hi Dennis,
> >>
> >> On Wed, 2010-01-20 at 14:08 +0100, Dennis J. wrote:
> >>> Hi,
> >>> I'm trying to set up a couple of realservers behind a
> >>> gateway/router/firewall and would like to put the LVS-DR config on that
> >>> machine too. In another setup I'm already running LVS-DR but there the
> >>> director is not sitting between the client and the realservers.
> >>> I've read the documentation and googled around and found that the
> >>> director/gateway combination only works with patches applied and some
> >>> additional non-standard configuration steps.
> >>> What I'm wondering is if there is an easier way to accomplish this now?
> >> The
> >>> references I found on the web go all the way back to 2001 and talk
> about
> >>> 2.2 and 2.4 kernels so I'm not sure if the patches/hacks to make this
> >> work
> >>> are still valid or if there is an easier way to accomplish this
> nowadays?
> >>
> >> I assume by all this you mean solving the ARP problem. If so, take a
> >> look at this section of the HOWTO which is specific on 2.6 kernels:
> >>
> >>
> >>
> http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.arp_problem.html#2.6_arp
> >>
> >> In a nutshell: you don't need to patch anything, just set some proc
> >> values and bring up a loopback device (in that order).
> >>
> >> --
> >> Léon
> >>
> >>
> >> _______________________________________________
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> >>
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> > _______________________________________________
> > Please read the documentation before posting - it's available at:
> > http://www.linuxvirtualserver.org/
> >
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>
> _______________________________________________
> Please read the documentation before posting - it's available at:
> http://www.linuxvirtualserver.org/
>
> LinuxVirtualServer.org mailing list - lvs-users at LinuxVirtualServer.org
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