CentOS - May 2009 - resolving names it is really slow slow with CentOS5.x using named

Hi all,

  I have a problem using named with different CentOS5 servers (2 servers): all 
they are really slow to resolv any internet address and most of time fails to 
resolv. This situation differs if I use "forwarders" servers like
opendns:
resolving names it is really really quickly. And I don't understand why.

  On the other hand I have tested three DNS servers using Windows 2003, Windows 
2008 and Ubuntu hardy and these problems doesn't occurs (I don't need to
configure forwarders on any of them): all resolves any name and really fast.

  IPv6 is disabled on both CentOS servers. Somebody knows why these dns servers 
are slow??

  Thanks.

-- 
CL Martinez
carlopmart {at} gmail {d0t} com

On 2009-05-25 12:51, carlopmart wrote:
>   I have a problem using named with different CentOS5 servers (2 servers):
all
> they are really slow to resolv any internet address and most of time fails
to
> resolv. This situation differs if I use "forwarders" servers like
opendns:
> resolving names it is really really quickly. And I don't understand
why.
> 
>   On the other hand I have tested three DNS servers using Windows 2003,
Windows
> 2008 and Ubuntu hardy and these problems doesn't occurs (I don't
need to
> configure forwarders on any of them): all resolves any name and really
fast.
> 
>   IPv6 is disabled on both CentOS servers. Somebody knows why these dns
servers
> are slow??

My crystal ball is in repair.  Could you in the meantime add some more
hints, e.g. your config files, and how you diagnosed the slowness.

My CentOS5 DNS-servers do resolve really quickly, with or without forwarders.


-- 
Paul Bijnens, Xplanation Technology Services        Tel  +32 16 397.525
Interleuvenlaan 86, B-3001 Leuven, BELGIUM          Fax  +32 16 397.552
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