From cloudstack-users-return-5119-apmail-incubator-cloudstack-users-archive=incubator.apache.org@incubator.apache.org Wed Mar 13 02:00:27 2013 Return-Path: X-Original-To: apmail-incubator-cloudstack-users-archive@minotaur.apache.org Delivered-To: apmail-incubator-cloudstack-users-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 7F8BCD380 for ; Wed, 13 Mar 2013 02:00:27 +0000 (UTC) Received: (qmail 69441 invoked by uid 500); 13 Mar 2013 02:00:27 -0000 Delivered-To: apmail-incubator-cloudstack-users-archive@incubator.apache.org Received: (qmail 69405 invoked by uid 500); 13 Mar 2013 02:00:26 -0000 Mailing-List: contact cloudstack-users-help@incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: cloudstack-users@incubator.apache.org Delivered-To: mailing list cloudstack-users@incubator.apache.org Received: (qmail 69394 invoked by uid 99); 13 Mar 2013 02:00:26 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 13 Mar 2013 02:00:26 +0000 X-ASF-Spam-Status: No, hits=-0.7 required=5.0 tests=RCVD_IN_DNSWL_LOW,SPF_HELO_PASS,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of mathias.mullins@citrix.com designates 66.165.176.63 as permitted sender) Received: from [66.165.176.63] (HELO SMTP02.CITRIX.COM) (66.165.176.63) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 13 Mar 2013 02:00:21 +0000 X-IronPort-AV: E=Sophos;i="4.84,833,1355097600"; d="scan'208";a="12203965" Received: from accessns.citrite.net (HELO FTLPMAILMX02.citrite.net) ([10.9.154.239]) by FTLPIPO02.CITRIX.COM with ESMTP/TLS/RC4-MD5; 13 Mar 2013 02:00:00 +0000 Received: from FTLPMAILBOX02.citrite.net ([10.13.98.209]) by FTLPMAILMX02.citrite.net ([10.13.107.66]) with mapi; Tue, 12 Mar 2013 22:00:00 -0400 From: Mathias Mullins To: "cloudstack-users@incubator.apache.org" Date: Tue, 12 Mar 2013 22:00:00 -0400 Subject: Re: what are folks using for replication? Thread-Topic: what are folks using for replication? Thread-Index: Ac4fjngbA5Uv14Q+Sc2ShrH5zusesQ== Message-ID: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.2.3.120616 acceptlanguage: en-US Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Virus-Checked: Checked by ClamAV on apache.org Hi John,=20 So in a lot of the installations that we have worked with, we are seeing a lot of work with DRBD (Active/Standby, Active/Active w/Pacemaker). So far it's been one of the better solutions that we have seen installations stable with. I think a lot of people would like to see this functionality written into ACS to support something in addition to MySQL Master/Slave replication. Personally I like the DRBD solution because it deals with the replication at a block level and gives us the flexibility of active/passive and active/active ability versus having to do a lot of manual work to revert the master/slave relationship. Thanks, Matt=20 On 3/12/13 9:32 PM, "John Kinsella" wrote: >Thought I'd throw this question out on the list - we're working on >geographically (1500 miles) replicated databases for customers who really >don't want their stuff to go down. > >In this particular case, how they've architected their DB schemas means >they're really not friendly to the standard transactional replication >(this is MSSQL server) so we're looking at replicating the whole block >device the db is stored on. > >We've tried using=8A > * Ceph - know it's not meant for geo-rep=8Aloving it locally, though! > * Gluster - When clustering across the WAN, performance was weak. Don't >have enough disks/nodes to create a gluster cluster to replicate with >gluster-geo-replicate > * drbd in active/standby - Fairly decent performance. I hear it'd be >better with the drbd-proxy, but don't feel like spending the $$ yet. I've >been previously shot in the foot enough times with drbd active/active >that I won't try that again. > >Currently using drbd (I'm pondering writing management of the >primary/secondary stuff into ACS) but curious if others have found ways >of doing this with ACS that they like? > >John > >Stratosec - Secure Infrastructure as a Service >o: 415.315.9385 >@johnlkinsella >