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From sebb <seb...@gmail.com>
Subject Re: [Hudson] Strange DNS behavior on ubuntu1
Date Tue, 21 Dec 2010 23:30:41 GMT
On 21 December 2010 22:56, Andreas Veithen <andreas.veithen@gmail.com> wrote:
> On Tue, Dec 21, 2010 at 23:40, sebb <sebbaz@gmail.com> wrote:
>> On 21 December 2010 21:48, Gav... <gavin@16degrees.com.au> wrote:
>>>
>>>
>>>> -----Original Message-----
>>>> From: Andreas Veithen [mailto:andreas.veithen@gmail.com]
>>>> Sent: Wednesday, 22 December 2010 6:39 AM
>>>> To: builds@apache.org
>>>> Subject: [Hudson] Strange DNS behavior on ubuntu1
>>>>
>>>> All,
>>>>
>>>> Does anybody know why this.is.not.a.valid.hostname.at.all.no.way
>>
>> That host name is not guaranteed to always be invalid.
>>
>> If you want to reference an invalid hostname, then use the TLD
>> .invalid, which is specially designed for this purpose.
>>
>> For example:
>>
>> myhost.invalid
>>
>> anotherhost.invalid
>>
>> AIUI all DNS resolvers should fail to resolve such host names.
>
> Yes, that was actually the next thing on my list to try. If you have
> shell access, can you do a quick check if that indeed gives the
> expected result?

You can create your own task to do this.

See for example one I just created:

https://hudson.apache.org/hudson/job/Ubuntu1/2/console

which unfortunately shows that Yahoo! DNS is (incorrectly) resolving
the .invalid TLD

Maybe someone should tell them...

Ubuntu2 seems to be OK however:

https://hudson.apache.org/hudson/job/Ubuntu2/2/console

>>>> resolves to 98.137.132.14 (nx1.ycpi.vip.sp2.yahoo.net) on ubuntu1? We
>>>> (Axis2) have a couple of test cases that use this host name with an
>>>> assertion on the expected exception (UnknownHostException), but they
>>>> now all fail because they get the wrong exception (ConnectException
>>>> with connection timed out).
>>>
>>> Someone from Yahoo! - where Ubuntu1 is hosted - will have to answer that.
>>>
>>> Gav...
>>>
>>>>
>>>> Andreas
>>>
>>>
>>>
>>
>

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