Am 19.01.2013 um 21:35 schrieb Boris Epstein <borepstein at gmail.com>: > Hello all, > > The question is not necessarily CentOS-specific - but there are lots of > bright people on here, and - quite possibly - the final implementation will > be on CentOS hence I figured I'd ask it here. Here is the situation. > > I need to configure a Linux-based network load balancer (NLB) solution. The > idea is this. Let us say I have a public facing load balancer machine with > an public IP of, say, 50.50.50.50. It is to receive the traffic (let's say, > HTTP traffic) and then route it to two private HTTP servers, let's say, > 192.168.10.10 and 192.168.10.11. It has to have persistence - i.e., be > state- and session-aware. If for whatever reason one of the servers goes > down the remaining pool shares all the traffic in some fashion (be it eound > robin, saturation based, whatever). > > We have tried Vyatta ( http://vyatta.org/ ) and ZeroShell ( > http://www.zeroshell.org/ ) and both are very good but their NLB seems to > be externally facing (i.e., you have several internet connections and are > trying to divide your traffic between them). What we need is an "internally > facing" one, if I may say so. > > Any advice on what may help us would be greatly appreciated. Did you check haproxy -> http://haproxy.1wt.eu. Application session should be shared via distributed key-value store (e.g. redis). Speak another instance to manage. -- LF