Re: DNS vs /etc/hosts - Mailing list pgsql-general

From Lowell.Hought@faa.gov
Subject Re: DNS vs /etc/hosts
Date
Msg-id OF5562B954.9F386C69-ON86257054.004EB1DE-86257054.004ECAF2@faa.gov
Whole thread Raw
In response to Re: DNS vs /etc/hosts  (Thomas Pundt <mlists@rp-online.de>)
Responses Re: DNS vs /etc/hosts  (Thomas Pundt <mlists@rp-online.de>)
List pgsql-general

How might I check for that?  And if it is determined to be a problem, how would I remove the guilty modules?



Thomas Pundt <mlists@rp-online.de>

Sent by: pgsql-general-owner@postgresql.org

08/05/2005 07:19 AM

To
pgsql-general@postgresql.org
cc
Lowell Hought/AGL/FAA@FAA
Subject
Re: [GENERAL] DNS vs /etc/hosts





Hi,

On Thursday 04 August 2005 17:13, Lowell.Hought@faa.gov wrote:
| I am changing from 7.2 to 8.0 and have both installed now on various Linux
| machines.  When I use the psql command line interface with a -h hostname,
| the connection time from 7.2 is instant while the connection time from 8.0
| is 15 seconds.  My assumption is that 7.2 checks the /etc/hosts file first
| and if unable to find the specified host it reverts to a DNS lookup, and
| the 8.0 is just the opposite.  Is this a correct assumption, and if so,
| can I modify 8.0 to behave as 7.2 does?

I've once seen nameservice and connection delays caused by improperly
configured IPV6 support on some Linux machines. Removing the responsible
modules from the kernel fixed it. Just another guess though :-)

Ciao,
Thomas

--
Dr. Thomas Pundt <thomas.pundt@rp-online.de> ---- http://rp-online.de/ ----


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