[lvs-users] Question regarding LVS/DR setup

Thomas Pedoussaut thomas at pedoussaut.com
Thu Oct 16 13:59:48 BST 2008


Erik Weber wrote:
> Hi there,
>
> I plan to implementing LVS/DR to load balance several services to
> several hosts in a setup like this, preferable with the same VIP:
>
> Host A is serving http requests on port 80 (VIP 192.168.0.1)
> Host B is serving http requests on port 80 (VIP 192.168.0.1)
> Host C is serving smtp requests on port 25 (VIP 192.168.0.1)
> Host D is serving smtp requests on port 25 (VIP 192.168.0.1)
>
> Host E is load balancing http requests on port 80 and redirecting to
> Host A and Host B
> Host E is load balancing smtp requests on port 25 and redirecting to
> Host C and Host D
>
> Is it possible for Host A and B to connect to the VIP at port 25? The
> idea was to use the same vIP.  I've used the arptables method on Host A-D.
> Ss there some hidden mechanisms or some other workarounds that could
> make this work or do I have to use separate VIPs for services that's
> supposed to connect to a VIP?
>   
You want your real server to be also client.

Your case is typical of this how-to entry:

http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.lvs_clients_on_realservers.html#do_you_need_lvs_clients_on_the_realserver


-- 
Thomas




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