Date: Mon, 2 Aug 1999 16:59:44 -0700 (PDT) From: "Craig W. Shaver" <craig@ProGroup.COM> To: cygone@zoomnet.net (Mitch Vincent), freebsd-isp@FreeBSD.ORG Subject: Re: Loadbalance webservers Message-ID: <199908022359.QAA29702@cod.progroup.com> In-Reply-To: <003b01bedd3e$e0378b80$0200000a@windows.cygone.com> from Mitch Vincent at "Aug 2, 1999 7:29:32 pm"
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>Isn't the most common way of load balancing something like a web server, >just round-robin DNS? > >I know there are several hardware solutions for load balancing, but I'd say >round-robin is the most commonly used non-hardware method. > > >-Mitch > >"When all your plans fail, backup, re-group and press on. The only real >failure is quitting..." That was the original solution people came up with. But as some of the other responses to this thread brought out, it can have problems. If you need to balance on something other than a random selection then a hardware (or software) method works. > >-----Original Message----- >From: Craig W. Shaver <cshaver@infoseek.com> del ... >> >> >>I've seen two that work pretty well, but they are not shareware/open >>source. One method is to use cisco local director. The cisco people >>are coming out with a revision on this that allows you to run a load >>input back to the director from a program running at a specific port on >>your individual web server. That would allow you to determine a factor >>that tells the cisco box how loaded you are :). That could be >>determined by load, cpu utilization, memory usage, swap, etc. The >>current version of local director uses the number of connections and any >>predetermined heuristic that you input for load balancing. >> >>Another solution is Resonate. I am currently using that on >>http://translator.go.com/ for both the front ends and back ends. It is >>very flexible and can be configured to do all sorts of custom load >>balancing. It can even be used to map a single port to multiple ports. >>They have a version for Linux, but not for freebsd. Maybe if enough of >>us ask they could do one for freebsd. They seem to be pretty responsive >>to my questions. They run agents on multiple servers that have been >>ifconfig'd to answer to the same ip. The agents talk to each other and >>do heartbeats. One agent is the master, another is the failover >>scheduler, and the rest are just plain servers. This package is easy to >>set up and administer. I like it. >> >> -- Craig Shaver, Productivity Group POB 60458 Sunnyvale, CA 94088 (650)390-0654 http://www.progroup.com/ mailto:craig@progroup.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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