Date: Mon, 05 Apr 2010 23:10:17 +0200 From: Maciej Jan Broniarz <gausus@gausus.net> To: jfarmer@goldsword.com Cc: freebsd-stable@freebsd.org Subject: Re: fault tolerant web servers on freebsd Message-ID: <4BBA51B9.6010803@gausus.net> In-Reply-To: <20100405164306.hmy4n8pvs4goc8ks@www.goldsword.com> References: <1209800810.33861270466947931.JavaMail.root@dagobah.intersec.pl> <4BBA05A2.40706@intertainservices.com> <4BBA1823.1090305@gausus.net> <4BBA4334.1020506@interazioni.it> <4BBA4478.7030302@gausus.net> <20100405164306.hmy4n8pvs4goc8ks@www.goldsword.com>
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W dniu 10-04-05 22:43, jfarmer@goldsword.com pisze: > Quoting Maciej Jan Broniarz <gausus@gausus.net>: >> W dniu 10-04-05 22:08, Tonix (Antonio Nati) pisze: >>> Maciej Jan Broniarz ha scritto: >>>> W dniu 10-04-05 17:45, Mike Jakubik pisze: >>> > > So first you have to define your workload, then define what errors you > must avoid or allow, and then define how to deal with failures, errors, > etc. > Then you can start talking about High Availability vs. level of Fault > tolerance, vs. .... Let's say i need to run a few php/sql based web sites and I would like to maintain uptime of about 99,99% per month. No matter how good the hardware - it will always fail at some time. My goal is to build a system, that can maintain that uptime. From what You say I need some level of HA system, to maintain the required uptime. So, as I've said earlier (correct me, if I'm wrong) - the setup could look something like that: - 2 web servers with carp - 2 storage servers with on-line sync mechanism running - 2 mysql servers with on-line database replication (i'm skiping power and network issues at the moment). Few people have told me about a setup with linux, drbd and heartbeat which offers them some level of HA. Has anyone tried anything similar on FreeBSD? mjb
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