From: | Michael Paquier <michael(at)paquier(dot)xyz> |
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To: | Martín Marqués <martin(at)2ndquadrant(dot)com> |
Cc: | Edmundo Robles <edmundo(at)sw-argos(dot)com>, pgsql-general(at)postgresql(dot)org |
Subject: | Re: upgrading from pg 9.3 to 10 |
Date: | 2018-08-16 00:31:20 |
Message-ID: | 20180816003120.GE3681@paquier.xyz |
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Lists: | pgsql-general |
On Tue, Aug 14, 2018 at 04:15:12PM -0300, Martín Marqués wrote:
> I'd recommend testing with a clone of the server to verify that it works
> properly (not only pg_upgrade, but your application with the new version
> of postgres). Also to time the window you'll need and see if there are
> things to be aware of, like extensions which are upgraded and might
> break the upgrade.
>
> Now if you are going to first jump to 9.4, I'd recommend using pglogical
> after getting to 9.4 and upgrade straight from 9.4 to 10 (always after
> testing your application against 10)
Well, pglogical has the advantage of reducing the downtime, which may
not matter depending on your application and you may be able to accept a
it of downtime, and pg_upgrade --link can be pretty quick at its job.
Test it before as --link is a no-return trip.
--
Michael
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