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 :: Mailing Lists

[ILUG] DNS resolution problem

[ILUG] DNS resolution problem

stephen mulcahy smulcahy at atlanticlinux.ie
Mon Feb 28 12:12:44 GMT 2011


On 28/02/11 12:10, Ronan Mullally wrote:
> On Mon, 28 Feb 2011, stephen mulcahy wrote:
>
>> domain blah.example.com
>> search foo.example.com aaa.example.com
>> nameserver 10.0.0.1
>> nameserver 10.0.0.2
>>
>> What I'm seeing in the nameserver query logs is lots of queries for things
>> like
>>
>> www.google.com.foo.example.com
>> www.google.come.aaa.example.com
>> www.google.com.blah.example.com
>
> It looks like the resolver is cycling through to the various (sub)domains
> listed in the search and domain lines in your /etc/resolv.conf.
>
> man resolv.conf and read about ndots (the default is 1, so the example
> above shouldn't happen unless the initial query failed).

Yes, that was my conclusion too. Just wondering are others seeing 
similar problems (or are people even monitoring things at this level).

-stephen

-- 
Stephen Mulcahy     Atlantic Linux         http://www.atlanticlinux.ie
Registered in Ireland, no. 376591 (144 Ros Caoin, Roscam, Galway)


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