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Olaf,
Usually we use Direct Routing mode with proxies(squids) because it is:
a) source ip transparent
b) return traffic doesn't need to go via the load balancer
c) its fast
2009/6/24 Olaf Krische <public@xxxxxxxxxx>
>
> Hello,
>
> i want to put a loadbalancer in front of several squids, which cache output
> of content generators.
>
> The first option is to use the apache/mod_proxy/mod_balancer combination.
> Thats easy to configure, you even have a little backend to disable
> BalancerMembers manually and also i dont need any special network
> configuration. We are quite happy with it. Its simple
>
> But there is this overhead of interpreting the content and to manage the
> connections.
>
> So the second option would involve IPVS, which just rewrites the packes and
> forwards them to a chosen BalancerMember.
>
> There are two ways:
>
> A) IPVS behaves like mod_proxy, the chosen Member will see a request coming
> from the LoadBalancer's LAN-IP.
>
> Bad: I lose the client IP on the Member/real server (in mod_proxy i have at
> least "X-Forwarded-For")
>
> B) IPVS forwards the packet to the chosen Member. The source address is
> unchanged.
>
> Bad: I need to change the default route, so that answers always go back
> through the LoadBalancer. This complicates the otherwise so simple network
> setup. People need to know about IPVS. Its not so obvious and self
> explanatory.
>
> So the question: Is IPVS worth the trouble?
>
> Or is this an exaggeration, when i say apache/mod_proxy uses way more
> resources?
>
> What would you say?
> --
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> http://www.nabble.com/ipvs-or-apache-mod_proxy-mod_balancer-tp24184926p24184926.html
> Sent from the LVS mailing list archive at Nabble.com.
>
>
> _______________________________________________
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--
Regards,
Malcolm Turnbull.
Loadbalancer.org Ltd.
Phone: +44 (0)870 443 8779
http://www.loadbalancer.org/
_______________________________________________
Please read the documentation before posting - it's available at:
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LinuxVirtualServer.org mailing list - lvs-users@xxxxxxxxxxxxxxxxxxxxxx
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