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Re: Dns resolution failure.. [message #3742 is a reply to message #3737]

Tue, 13 June 2006 18:14

Aaron Stewart
Messages: 3
Registered: June 2006

Junior Member

Hey Kirill,

We've gone down that route with no results.

What's bugging me (and I can't wrap my brain around it) is that we can
ping the outside world, wget to IP addresses, and ssh into external
hosts. The only thing that seems to be failing is DNS at the
application level.. Again, nslookup and host both work without issue.

-=Aaron

Kirill Korotaev wrote:
> You need to check with tcpdump in the host whether your packets go ok
> from VE to host system.
> Does networking work correctly from VE when IP addresses are used?
>
> Kirill
>
>> Hey all,
>>
>> We're seeing a problem where within one particular VE on a host we
>> can nslookup or "host" a hostname and everything works.
>>
>> But when we try running yum update or wget (even to www.google.com)
>> we get "Temporary failure in name resolution."
>>
>> We've dug around on the lists and tried solutions posted there with
>> no luck (w.r.t setting forwarding on the main system, etc).
>>
>> We're also seeing the following in the logs (not sure if it's a
>> red-herring or not):
>>
>> Jun 12 15:48:19 FOO sysctl: net.ipv4.ip_forward = 0
>> Jun 12 15:48:19 FOO sysctl: error: unknown error 1 setting key
>> 'net.ipv4.conf.default.rp_filter'
>> Jun 12 15:48:19 FOO sysctl: error: unknown error 1 setting key
>> 'net.ipv4.conf.default.accept_source_route'
>> Jun 12 15:48:19 FOO sysctl: error: unknown error 1 setting key
>> 'kernel.sysrq'
>> Jun 12 15:48:19 FOO sysctl: error: unknown error 1 setting key
>> 'kernel.core_uses_pid'
>>
>>
>> I should mention that all other VE's running on the host work without
>> a problem.
>>
>> Any ideas?
>>

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[Message index]

		Dns resolution failure.. By: Aaron Stewart on Mon, 12 June 2006 23:49
		Re: Dns resolution failure.. By: dev on Tue, 13 June 2006 09:36
		Re: Dns resolution failure.. By: Aaron Stewart on Tue, 13 June 2006 18:14
		Re: Dns resolution failure.. By: rkagan on Wed, 14 June 2006 09:16
		Re: Dns resolution failure.. By: Aaron Stewart on Wed, 14 June 2006 09:25
		Re: Dns resolution failure.. By: Jonathan on Wed, 14 June 2006 22:20
		Re: Dns resolution failure.. By: rkagan on Thu, 15 June 2006 07:56
		Re: Dns resolution failure.. By: dev on Wed, 14 June 2006 10:53
		Re: Dns resolution failure.. By: kir on Wed, 14 June 2006 12:26
		Re: Dns resolution failure.. By: Jonathan on Wed, 14 June 2006 17:26
		Re: Dns resolution failure.. By: Cliff Wells on Wed, 12 December 2007 17:29

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