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Re: Understanding the behaviour of hostname in psql

From: Michael Wood <esiotrot(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Marco Craveiro <marco(dot)craveiro(at)gmail(dot)com>, pgsql-novice(at)postgresql(dot)org
Subject: Re: Understanding the behaviour of hostname in psql
Date: 2010-12-09 09:18:06
Message-ID: AANLkTinXg9n8yvk77CvGq=D4hm7oA=y6fteXqG3d0i4j@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-novice
Hi

On 4 December 2010 23:52, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Marco Craveiro <marco(dot)craveiro(at)gmail(dot)com> writes:
>> i'm looking for some help in understanding the behaviour of hostname
>> in postgres 8.4. apologies if this has been asked before; i googled
>> but to no avail.
>> basically: do i need to supply both the 127.0.1.1 ip address in
>> pg_hba.conf as well as the actual ip address (say 192.168.0.5) in
>> order to be able
>> to always have trusted local connections? and if yes, whats the best
>> way of dealing with DHCP?
>
> Well, a connection to "localhost" will generally go to 127.0.0.1
> (*not* 127.0.1.1 --- that's just a typo from some hand hacking
> of your hosts file, I bet).  [...]

Actually, no.  Some Linux distributions add a line like this to the
hosts file on install:

127.0.1.1 yourhost

I'm not entirely sure what the reason is, but it might involve
allowing for machines with no ethernet etc. interfaces.

-- 
Michael Wood <esiotrot(at)gmail(dot)com>

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