Re: Shutdown Order with Primary/Standby?

From: Don Seiler <don(at)seiler(dot)us>
To: Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
Cc: "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org>
Subject: Re: Shutdown Order with Primary/Standby?
Date: 2017-08-11 20:20:39
Message-ID: CAHJZqBAGe24qxQ3p1Jo9qy1zY8JEwF0ZyqaNhXuav2bxmpwhTQ@mail.gmail.com
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On Fri, Aug 11, 2017 at 11:07 AM, Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
wrote:

> If you're doing minor upgrades, you don't need to bring down the whole
> cluster, you can take a single replica out and upgrade pg on it, then
> put it back in the cluster. Again, if you have enough kept wal
> segments, or you use replication slots, then it will just catch right
> up.
>

What do you mean by "take it out of the cluster" and "put it back in the
cluster"? Shut it down and rename the recovery.conf? Or more complexity
than that? Why would that be needed at all?

--
Don Seiler
www.seiler.us

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