From owner-freebsd-questions@FreeBSD.ORG Tue Oct 30 14:14:12 2007 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 714DD16A419 for ; Tue, 30 Oct 2007 14:14:12 +0000 (UTC) (envelope-from fbsdlists@gmail.com) Received: from wr-out-0506.google.com (wr-out-0506.google.com [64.233.184.227]) by mx1.freebsd.org (Postfix) with ESMTP id 18CC313C491 for ; Tue, 30 Oct 2007 14:14:11 +0000 (UTC) (envelope-from fbsdlists@gmail.com) Received: by wr-out-0506.google.com with SMTP id 70so1197972wra for ; Tue, 30 Oct 2007 07:14:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=2hkWTd85VSflhSpPfAAEwMPOeZm2vp4B6C4FarsiyPA=; b=BtQyldTamWhzXLEHEtXHsIq3fmGxP9vVz+/HDtpA50Edh/lz2+6CzcoxC6nzZ1xmqwacngUbqeeiPA6CpeinEyczS/jV6dcXZ3sq+AhPeYyqvwQ8d+Di9AqcR6fe3CBD/Ou1tQTch6enu3cH5lna2+Bxp2//tX4qkiau21j6PNw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=A+9SPyZdfXXpCjdGmzT2caKiDS3hSu2Ruqrvmy/oSnsdd+FMo76wz/NMayD+d15T0QRllaLCePUzuyxLN8DqOWRh7SGmkU/IzECp95/mKi+oAxyDzquKP55FXbu7WHkfBctE2RjiRRPLpL7qZb/VWiMh5JhfPpCP9sAty3MzBio= Received: by 10.142.203.13 with SMTP id a13mr1636989wfg.1193752096875; Tue, 30 Oct 2007 06:48:16 -0700 (PDT) Received: by 10.142.12.14 with HTTP; Tue, 30 Oct 2007 06:48:16 -0700 (PDT) Message-ID: <54db43990710300648j436dfb91t5ba21d5c69af1b4c@mail.gmail.com> Date: Tue, 30 Oct 2007 09:48:16 -0400 From: "Bob Johnson" To: "Stephen Allen" In-Reply-To: <47264FD7.2040807@brookes.ac.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <47264FD7.2040807@brookes.ac.uk> Cc: FreeBSD Questions Subject: Re: How to provide fail-over capability for servers? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Oct 2007 14:14:12 -0000 It depends on what type of services the servers offer. Mail servers, web servers, file servers, DHCP servers? SMTP (the mail protocol) for instance has built-in provisions for automatic failover. - Bob On 10/29/07, Stephen Allen wrote: > I'm completely new to this so some of my ideas may sound ludicrous... > please put me right where necessary! > > I will have 3 net-facing servers which must be available 24/7. I had > planned to have an additional box located in a different building on the > same site (in case of part power-outage) that will run VMware server and > host all the fail-over servers. > > What options are there for providing automatic fail-over capability? I > had thought of running a cron job every minute that would test for the > existence of the other server and assume its identity if it couldn't get > a reply, but it feels like a 'sub-optimal' way of doing it. > > Can anyone give me some ideas I should be looking at? > > Many thanks, > Steve :) > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >