Received: from maia.hub.org (maia-2.hub.org [200.46.204.251]) by mail.postgresql.org (Postfix) with ESMTP id 89E0EB5DC95 for ; Mon, 17 Oct 2011 10:45:40 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.251]) (amavisd-maia, port 10024) with ESMTP id 49720-08-2; Mon, 17 Oct 2011 13:45:33 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0-rc2 X-Greylist: from auto-whitelisted by SQLgrey-1.8.0-rc2 Received: from locust.cns.vt.edu (locust.cns.vt.edu [198.82.169.14]) by mail.postgresql.org (Postfix) with ESMTP id 46E46B5DD40; Mon, 17 Oct 2011 10:44:57 -0300 (ADT) Received: by locust.cns.vt.edu (Postfix, from userid 986) id A11EF118DD3; Mon, 17 Oct 2011 09:44:56 -0400 (EDT) Date: Mon, 17 Oct 2011 09:44:56 -0400 From: Ray Stell To: Simon Riggs Cc: pgsql-admin , pgsql-docs@postgresql.org Subject: Re: after failover? Message-ID: <20111017134456.GA16432@cns.vt.edu> References: <20111014140248.GB22060@cns.vt.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-2.404 tagged_above=-10 required=5 tests=BAYES_00=-1.9, RP_MATCHES_RCVD=-0.504 X-Spam-Level: X-Archive-Number: 201110/84 X-Sequence-Number: 38536 On Sun, Oct 16, 2011 at 08:21:31PM +0100, Simon Riggs wrote: > On Fri, Oct 14, 2011 at 3:02 PM, Ray Stell wrote: > > > The tutorial here excludes an important issue: > > http://wiki.postgresql.org/wiki/Binary_Replication_Tutorial#Failing_Over_To_The_Standby > > After the failover is complete, it seems like a restart is required to > > make the new primary capable of supporting a new hot standby. ?Can the > > config values be changed without an interuption of service? ?I'm using > > a hotstandby config in 9.0.x. ?Anything different in this regard in 9.1? > > Thanks. > > There's no reason not to have wal_level = hot_standby on the standby also. That's helpful, thanks. Seems like a worthy addition to the doc and tutorial.