Re: Streaming replication and postmaster signaling

From: Craig Ringer <craig(at)postnewspapers(dot)com(dot)au>
To: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
Cc: Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Streaming replication and postmaster signaling
Date: 2010-01-06 08:28:06
Message-ID: 4B444996.105@postnewspapers.com.au
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Fujii Masao wrote:
> On Tue, Jan 5, 2010 at 11:29 PM, Alvaro Herrera
> <alvherre(at)commandprompt(dot)com> wrote:
>> This was probably discussed to death earlier, but: why was it decided to
>> not simply use a different port for listening for walsender
>> connections?
>
> I believe that using a different port would make the setup
> of replication messier; look for the unused port number,
> open that port for replication in the firewall, etc.

Actually, being able to firewall walsender traffic separately might be
rather handy.

Having to assign a different port wouldn't be fun for packagers, though,
especially those (like the Debian-derived Linux distros) who already try
to support more than one Pg version installed in parallel.

--
Craig Ringer

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