Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1VjyKH-0006RU-Hn for pgsql-admin@arkaria.postgresql.org; Fri, 22 Nov 2013 21:31:45 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1VjyKH-0006QV-0w for pgsql-admin@arkaria.postgresql.org; Fri, 22 Nov 2013 21:31:45 +0000 Received: from makus.postgresql.org ([2001:4800:7903:4::125]) by malur.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1VjyKF-0006PE-S6 for pgsql-admin@postgresql.org; Fri, 22 Nov 2013 21:31:44 +0000 Received: from filter1.win.net ([216.24.27.101]) by makus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1VjyKD-0002M0-4n for pgsql-admin@postgresql.org; Fri, 22 Nov 2013 21:31:43 +0000 Received: from nb-208.win.net (nb-208.win.net [216.24.27.208]) by filter1.win.net (8.14.3/8.14.3/Debian-5+lenny1) with ESMTP id rAMLVeHk013577 for ; Fri, 22 Nov 2013 16:31:40 -0500 Received: from Gantry (pool245.office.win.net [216.24.33.245]) by nb-208.win.net (Postfix) with SMTP id 2190673204 for ; Fri, 22 Nov 2013 16:31:40 -0500 (EST) Message-ID: From: "Joseph Mays" To: References: In-Reply-To: Subject: pgpool-II Date: Fri, 22 Nov 2013 16:31:52 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0087_01CEE7A0.59BD12B0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3538.513 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3538.513 X-Spam-Score: undef - mays@win.net is whitelisted. X-CanIt-Geo: ip=216.24.27.208; country=US; region=KY; city=Louisville; postalcode=40204; latitude=38.2390; longitude=-85.7174; metrocode=529; areacode=502; http://maps.google.com/maps?q=38.2390,-85.7174&z=6 X-CanItPRO-Stream: Outbound:default (inherits from base:default) X-Canit-Stats-ID: 02KQJvEDd - a1fe9ff387f0 - 20131122 X-Antispam-Training-Forget: http://filter.win.net/canit/b.php?i=02KQJvEDd&m=a1fe9ff387f0&t=20131122&c=f X-Antispam-Training-Nonspam: http://filter.win.net/canit/b.php?i=02KQJvEDd&m=a1fe9ff387f0&t=20131122&c=n X-Antispam-Training-Spam: http://filter.win.net/canit/b.php?i=02KQJvEDd&m=a1fe9ff387f0&t=20131122&c=s X-Scanned-By: CanIt (www . roaringpenguin . com) on 216.24.27.101 X-Pg-Spam-Score: 0.3 (/) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-admin Precedence: bulk Sender: pgsql-admin-owner@postgresql.org This is a multi-part message in MIME format. ------=_NextPart_000_0087_01CEE7A0.59BD12B0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I am trying to help someone who wants a dynamic failover server. They = have a very active pgsql server. I set up streaming replication to = another server so there is always a live backup available, but now they = have decided they want to be able to read and write to either server at = any time. Essentially they are looking for a cluster, even though that = is the wording they are using. I have been looking at pgpool-II. How well does it work, and how hard = would be it be to convert a primary server and a streaming replication = server to be a load-balanced pgpoo-II cluster? If the two databases get out of sync (such as one is down for a while = and then back up) do they automatically sync the databases back up? Joe Mays ------=_NextPart_000_0087_01CEE7A0.59BD12B0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I am trying to help someone who wants a dynamic failover server. = They have=20 a very active pgsql server. I set up streaming replication to another = server so=20 there is always a live backup available, but now they have decided they = want to=20 be able to read and write to either server at any time. Essentially they = are=20 looking for a cluster, even though that is the wording they are = using.
 
I have been looking at pgpool-II. How well does it work, and how = hard would=20 be it be to convert a primary server and a streaming replication server = to be a=20 load-balanced pgpoo-II cluster?
 
If the two databases get out of sync (such as one is down for a = while and=20 then back up) do they automatically sync the databases back up?
 
Joe Mays
 
------=_NextPart_000_0087_01CEE7A0.59BD12B0--