From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.50) id 1EbQgB-0004pQ-VO for garchives@archives.gentoo.org; Sun, 13 Nov 2005 22:50:32 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.5/8.13.5) with SMTP id jADMb9iX015708; Sun, 13 Nov 2005 22:37:09 GMT Received: from skylla.rus.uni-stuttgart.de (skylla.rus.uni-stuttgart.de [141.58.231.9]) by robin.gentoo.org (8.13.5/8.13.5) with ESMTP id jADMUfb2007326 for ; Sun, 13 Nov 2005 22:30:42 GMT Received: from localhost (localhost [127.0.0.1]) by skylla.rus.uni-stuttgart.de (Postfix) with ESMTP id B943D71F65 for ; Sun, 13 Nov 2005 23:30:41 +0100 (CET) Received: from skylla.rus.uni-stuttgart.de ([127.0.0.1]) by localhost (skylla [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 29546-01-65 for ; Sun, 13 Nov 2005 23:30:36 +0100 (CET) Received: from uni-stuttgart.de (mbox.rus.uni-stuttgart.de [129.69.1.9]) by skylla.rus.uni-stuttgart.de (Postfix) with ESMTP id B48E771F3E for ; Sun, 13 Nov 2005 23:30:36 +0100 (CET) X-Virus-Scanned: by mbox.uni-stuttgart.de Received: from [129.69.11.67] (account ruslucas@po2.uni-stuttgart.de HELO gentoo.rus.uni-stuttgart.de) by uni-stuttgart.de (CommuniGate Pro SMTP 4.2.8) with ESMTP-TLS id 29566398 for gentoo-user@lists.gentoo.org; Sun, 13 Nov 2005 23:30:36 +0100 Date: Sun, 13 Nov 2005 23:30:35 +0100 (CET) From: Sascha Lucas To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Server Mirroring... In-Reply-To: <43778DFC.5040004@badapple.net> Message-ID: References: <02E97941F0AF594D9CF56EE628E3BE1F1348C5@vodka.office.red-herring.net> <43778DFC.5040004@badapple.net> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Virus-Scanned: by amavisd-new at skylla.rus.uni-stuttgart.de X-Spam-Status: No, hits=-2.599 tagged_above=-999 required=5 tests=BAYES_00 X-Spam-Level: X-Archives-Salt: 9aad4808-9659-4658-818a-5cea1b81c76c X-Archives-Hash: c1543b1cc91a9e6241c7da7d64fe0de8 >> easy with postfix: DNS round robin (solution inside DNS Server, nearly all >> MTAs are aware of this) > > So DNS round robins between the two mail servers. A new mail comes into > server1, how does this mail make it to server2. Yes this is definitely the difficultest part. It must be solved somewhere in the LDA (cyrus). The MTA just pass mails to the LDA. So round robin should work. > I don't see that Postgres supports multiple masters either. Circular I'm not an expert but what about this? http://www.postgresql.org/about/news.289 > The storage has to reside somewhere. If that site goes down, both servers go > down. You either need both servers in the same site with shared storage or > figure out how to do a shared nothing backend. It depends on how both sites are connected. Just like redundancy in Servers/Network you can have redundant storage. I.E. with (a)synchronous replication over IP or FC-networks. BTW: I don't know a cluster-solution with cyrus. We use a cluster aware commercial one. Sascha. -- gentoo-user@gentoo.org mailing list