From: | Robert Treat <xzilla(at)users(dot)sourceforge(dot)net> |
---|---|
To: | pgsql-docs(at)postgresql(dot)org |
Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, Jeff Frost <jeff(at)frostconsultingllc(dot)com> |
Subject: | Re: Slony for upgrades |
Date: | 2007-10-16 18:21:37 |
Message-ID: | 200710161421.37924.xzilla@users.sourceforge.net |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-docs |
On Tuesday 16 October 2007 01:38, Bruce Momjian wrote:
> Jeff Frost wrote:
> > On Mon, 15 Oct 2007, Bruce Momjian wrote:
> > > Seems we didn't have any mention of Slony for upgrades in the migration
> > > section, so I added it:
> > >
> > > <para>
> > > It is also possible to use <productname>Slony</> to create a slave
> > > server with the updated version of <productname>PostgreSQL</>. The
> > > slave can be on the same computer or a different computer. Once it
> > > has synced up with the master server (running the older version of
> > > <productname>PostgreSQL</>), you can switch masters and make the
> > > slave the master and shut down the older database instance. Such a
> > > switch-over results in only several minutes of downtime for an upgrade.
> > > </para>
> >
> > Bruce, do you think we should say several minutes of downtime? It's been
> > my experience that the downtime is usually measurable in seconds. I
> > don't think I've ever had a switchover take more than 1 minute.
> >
> > Excellent catch and good work by the way!
>
> Thanks, changed to seconds. I thought someone told me <5 minutes a
> while ago but I might have been mistaken.
I might question the strict reference to Slony here. AIUI you could do the
same thing with Bucardo and a couple of other replication solutions as well.
--
Robert Treat
Build A Brighter LAMP :: Linux Apache {middleware} PostgreSQL
From | Date | Subject | |
---|---|---|---|
Next Message | Robert Treat | 2007-10-16 18:21:42 | Re: correct reference external-projects.sgml |
Previous Message | Oleg Bartunov | 2007-10-16 16:04:12 | Re: Use of "token" vs "lexeme" in text search documentation |