Date: Sat, 20 Aug 2005 22:05:38 -0500 From: Eric Anderson <anderson@centtech.com> To: Ovidiu Ene <ovidiue@unixware.ro> Cc: freebsd-isp@freebsd.org Subject: Re: Load Balancing - Nice and Easy - no BGP, no isp help. Message-ID: <4307EF82.7080003@centtech.com> In-Reply-To: <430656A8.5030103@unixware.ro> References: <430656A8.5030103@unixware.ro>
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Ovidiu Ene wrote: > Hello friends > > I am trying for a while to make a load balancer under FreeBSD. No BGP > support from isps! > > I would have: 3 nics, ISP1 nic, ISP2 nic and LAN nic. > What i've done until now, after reading lots of posts, googling for a > while: > > - I've suceeded to setup an outgoing load balancer with pf, it works > perfectly but only for outgoing traffic; > - I've noticed that almost everybody thing that it cannot be done load > balancing with BSD of incoming and outgoing without help of that both > ISP (BGP) > - I find hardware with proprietary OS/firmware that can do load > balancing without support of ISP. Some are cheap (300$), but at review > does not know to load balance incoming traffic (break functionality of > some pages accessed, since some of load is on one interface, some of > other, works corectly only if i setup to come some type of traffic on > one interface, some of other (for example trafic via port 80 on one nic, > ftp traffic on the other), also are expensive hardware load balancers > (over 1000$) that... i am asking myself how it works, without help of isp. > - I've found somewhere that it can be done load balancing but not with > one box with that 3 nics, but with 3 boxex, because (that article i am > "insipring" said that every box has just one routing table) because can > be created a virtual server that with handle routes from that 2 boxes. > - People told me that in Linux load balancing cand be done, 3 nics, 2 > external, one to Lan, with iptables. Here is a short article: > http://linux.com.lb/wiki/index.pl?node=Load%20Balancing%20Across%20Multiple%20Links > > > So, my question is, if some people made it (in expensive hardware that > did have the same OS, maybe even FreeBSD, and proprietary algorythms) > and in Linux it can be done (people told me, i've read articles and also > so it here, where i live) why it cannot be done under FreeBSD? > I guess it can be done, I want to do it with FreeBSD, and want to obtain > same performances as with Linux. > > What is your opinion about that? What should I do? Anybody suceed in > making load balancing work that way? I'm wondering if there is a way to do something like this with ipnat. If not, it might be a good place to toss something like this - just send new connection requests through alternating interfaces.. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
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