From: Chris Ernst <cernst@zvelo.com>
To: pgsql-admin@postgresql.org
Subject: Re: Upgrading from 9.1 to 9.2 in place, same machine
Date: Wed, 10 Jul 2013 12:10:23 -0600
Message-ID: <51DDA38F.1040505@zvelo.com> (raw)
In-Reply-To: <CAOC+FBUZL60+OzFXoQZFRL42Zn2DDkyhmmOUx3SKE4Xv1y=eYQ@mail.gmail.com>
References: <CAOC+FBUZL60+OzFXoQZFRL42Zn2DDkyhmmOUx3SKE4Xv1y=eYQ@mail.gmail.com>
List-Unsubscribe: <mailto:majordomo@postgresql.org?body=unsub%20pgsql-admin>
On 07/10/2013 11:53 AM, Wells Oliver wrote:
> I'd like to move the 9.1 database to 9.2 without any down time, and
> ensuring that no data is lost.
>
> My original idea was to make 9.2 a slave of 9.1, then switch it over.
You can't do this with streaming replication. But you can with slony.
Just replicate from 9.1 as master to 9.2 as a slave. Once they are
fully in sync, promote 9.2 to master.
Note that you will have to restart postgres at least once to move the
9.2 port to the same as the 9.1 port when you switch. SO it won't be
zero down time, but pretty darn close.
- Chris
--
Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-admin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-admin@postgresql.org
Cc: cernst@zvelo.com
Subject: Re: Upgrading from 9.1 to 9.2 in place, same machine
In-Reply-To: <51DDA38F.1040505@zvelo.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox