From owner-freebsd-questions@FreeBSD.ORG Mon Nov 17 16:16:48 2008 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B54381065674 for ; Mon, 17 Nov 2008 16:16:48 +0000 (UTC) (envelope-from alex@schnarff.com) Received: from mho-01-bos.mailhop.org (mho-01-bos.mailhop.org [63.208.196.178]) by mx1.freebsd.org (Postfix) with ESMTP id 706388FC08 for ; Mon, 17 Nov 2008 16:16:48 +0000 (UTC) (envelope-from alex@schnarff.com) Received: from [65.102.233.117] (helo=www.schnarff.com) by mho-01-bos.mailhop.org with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.68) (envelope-from ) id 1L26T7-0002ot-VF for questions@freebsd.org; Mon, 17 Nov 2008 15:56:54 +0000 Received: (qmail 30944 invoked by uid 80); 17 Nov 2008 15:57:14 -0000 Received: from sf-nat.sourcefire.com (sf-nat.sourcefire.com [64.214.53.2]) by mail.schnarff.com (Horde Framework) with HTTP; Mon, 17 Nov 2008 10:57:14 -0500 X-Mail-Handler: MailHop Outbound by DynDNS X-Originating-IP: 65.102.233.117 X-Report-Abuse-To: abuse@dyndns.com (see http://www.mailhop.org/outbound/abuse.html for abuse reporting information) X-MHO-User: U2FsdGVkX1/b+DllyxsjrtiwgvsMDBYnAW88TJIdPto= Message-ID: <20081117105714.19994onozp83obs4@mail.schnarff.com> Date: Mon, 17 Nov 2008 10:57:14 -0500 From: Alex Kirk To: questions@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes"; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: quoted-printable User-Agent: Internet Messaging Program (IMP) H3 (4.3) / FreeBSD-7.0 Cc: Subject: CARP-Like Solution With Machines On Different Networks? 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: Mon, 17 Nov 2008 16:16:48 -0000 Hello All, I'm attempting to put a redundant fail-over system in place for a =20 machine that I manage for a non-profit organization of modest budget. =20 For the time being, I'm most interested in having MySQL and HTTP =20 connections roll over to a backup system in the event that the primary =20 machine goes down for some reason, and then return control to the =20 primary box once it returns - nothing particularly fancy. After doing some research on the matter, it looks like CARP would be a =20 winning solution - but only if the backup system was on the same =20 network segment as the primary box. Given that there's no money to =20 colocate a second backup system at the same facility as the main =20 machine (and protection against failure at the colo facility is one of =20 the primary drivers for the failover setup), however, it looks like =20 CARP wouldn't be useful. That said, are there any solutions which behave similarly to CARP that =20 I could use for a pair of machines connected solely via the Internet? =20 For now, I'd even be happy if there was some way to simply do TCP =20 port-level proxying, so to speak (i.e. connections come in to a given =20 machine, and are proxied to the main system if it's up, but go to the =20 backup box if not)? Thanks in advance for any advice you can provide. Alex Kirk ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.