[lvs-users] ipvs not doing any link balancing

Malcolm Turnbull malcolm at loadbalancer.org
Thu Aug 26 12:56:37 BST 2010


Um... What made you think LVS can do link balancing?
Its for server load balancing.

On 26 August 2010 06:46, Sivaraman Kannan <k.sivaraman at gmail.com> wrote:
> Hi guys
>    I have a setup where I have three interfaces on my linux box, one is a
> LAN interface and two are connected to the internet and I want to do link
> balancing of all packets coming from the LAN onto the two WAN interfaces.
> I have configured ipvs to do the link balancing (scheduling is weighted
> round-robin) using the following command for each WAN interface:
> ipvsadm -a -f <fwmark> -r wan_real_server_ip -z wan_interface -w weight -j
> Right now, the behavior is that LVS does not do any link balancing, but only
> sends it out of one interface (i think the first interface that came up).
> ipvsadm -lnc shows a whole bunch of connections in SYN_RECV state...anything
> which came in on the other interface never gets a reply.
> If I specify the real server IP as the WAN gateway instead of the interface
> IP itself, it works but I really need this scenario to work. Any
> suggestions? Do you need more information? Please let me know. Thanks!
> regards
> Siva.
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Malcolm Turnbull.

Loadbalancer.org Ltd.
Phone: +44 (0)870 443 8779

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