[lvs-users] LVS on localhost

Julian Anastasov ja at ssi.bg
Thu Mar 24 10:05:20 GMT 2011


On Mon, 21 Mar 2011, Tim Vaillancourt wrote:

> Hey guys,
> I am running into an issue with getting an LVS VIP running on localhost
> in what I understand to be called "LocalNode" mode. It was asked in 2004
> (link below), but there was no reply, and I am now in the same boat,
> trying to get this to work:
> http://archive.linuxvirtualserver.org/html/lvs-users/2004-06/msg00137.html
> Essentially, I have a machine with 2 socks proxies binded to localhost
> on 2 different TCP ports, 9100 and 9200. I would like a 3rd TCP port on
> localhost which will round-robbin between the 2 TCP ports of the 2 socks
> proxies binded on localhost.
> To do so, I have created a 3rd TCP port of 9000 on localhost, and am
> unable to get it to work, the same as the user in the link I mentioned.
> I also tried creating a lo:0 and lo:1 for the 2 proxies with
> and and that didn't work either.
> There is some documentation on "LocalNode" below, but not enough to help
> me understand the issue. Is there any special behavior or limitations
> "LocalNode" imposes that is not mentioned?
> http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.localnode.html
> The ipvsadm syntax I've tried:
> ipvsadm -A -t -s rr
> ipvsadm -a -t -r -m
> ipvsadm -a -t -r -m

 	LocalNode is rewritten in 2.6.37. The above commands
should work with NFCT enabled or disabled:


 	What is the kernel version?

> PS: I have looked at just pure iptables with the '--nth' mode, and may
> just try that instead, but I figured LVS could do this.
> Cheers, thanks for your time!
> Tim Vaillancourt


Julian Anastasov <ja at ssi.bg>

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