Date: Mon, 05 Apr 2010 22:13:44 +0200 From: Maciej Jan Broniarz <gausus@gausus.net> To: "Tonix (Antonio Nati)" <tonix@interazioni.it> Cc: freebsd-stable@freebsd.org Subject: Re: fault tolerant web servers on freebsd Message-ID: <4BBA4478.7030302@gausus.net> In-Reply-To: <4BBA4334.1020506@interazioni.it> References: <1209800810.33861270466947931.JavaMail.root@dagobah.intersec.pl> <4BBA05A2.40706@intertainservices.com> <4BBA1823.1090305@gausus.net> <4BBA4334.1020506@interazioni.it>
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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: > > Just to use exact words, fault toulerancy is not possible with any > FreeBSD/Linux O.S. > F.T. means outage can occur in every moment, but all current operation > will be always completed by other equipments; so there will not be > interrupted/lost operations. Hmm. Thanks for the tip. Which *NIX os can be used to build an FT solution then? Solaris? AIX? HP-UX? > Carp is fine for HA is you have always both db and file storage always > available. > For DB you can use MySQL replica, cross-replicating local MySQL data > among all servers. Each server will keep its own copy, always up to date > with other servers. > This will make all DB data always available, except data recorded in the > last milliseconds. > > About file storage, you must have an external reliable NFS server. So, to be redundant one should run 2 x web servers + 2 x storage +2 x mysql. Sounds like fun, but also like a lot of work. So how do the web hosting prividers manage to use FreeBSD for theirs solution? I am curious do they have a cluster/reudndant solution for every part of the system, or they just accept thet something will fail at some time. Best regards, mjb
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