The kube-dns pod does reflect the node's nameservers and external name
resolution does work from within the container.

On Tue, Oct 18, 2016 at 10:14 AM, Todd VanderVeen <
todd.vanderv...@collectivemedicaltech.com> wrote:

> Sorry, I should have been clearer about what I am observing. My nodes
> /etc/resolv.conf lists 3 name servers and 3 search domains. However, my
> containers show only a single name server, as specified by the kubelet. The
> search domain list is properly extended to 6 entries, being prefixed with
> the 3 expected cluster domains.
>
> The only dns related configuration I've used are the kubelet flags:
>
> --cluster-dns=10.3.0.10
> --cluster-domain=cluster.local
>
> What else would play into this?
>
> Thanks,
>
> On Tue, Oct 18, 2016 at 1:46 AM, Matthias Rampke <m...@soundcloud.com>
> wrote:
>
>> To debug, you can `kubectl exec` into a kubedns pod and inspect the
>> /etc/resolv.conf it got.
>>
>> On Tue, Oct 18, 2016, 01:52 'Tim Hockin' via Kubernetes user discussion
>> and Q&A <kubernetes-users@googlegroups.com> wrote:
>>
>>> kube-dns should pass-thru to whatever nameserver(s) are configured in
>>> the node's resolv.conf
>>>
>>> On Mon, Oct 17, 2016 at 1:11 PM, Todd VanderVeen
>>> <todd.vanderv...@collectivemedicaltech.com> wrote:
>>> > I've setup a k8s 1.4 cluster with the kubedns addon. In-cluster
>>> resolution
>>> > is working as expected, but external names cannot be resolved. As I
>>> > understand it, the nodes defined nameservers are used for resolution
>>> (with
>>> > the caveat that only 3 entries are permitted, with skydns taking one)
>>> > outside of the cluster. Am I misunderstanding this  expected behavior,
>>> or do
>>> > external nameservers need to be explicitly configured somehow?
>>> >
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>
>
> --
> Todd VanderVeen
> *Collective Medical Technologies*
>
> (801) 419-2288 (c)
> 9815 S. Monroe St. Ste. 501
> Salt Lake City, UT 84070
> http://www.collectivemedicaltech.com
>



-- 
Todd VanderVeen
*Collective Medical Technologies*

(801) 419-2288 (c)
9815 S. Monroe St. Ste. 501
Salt Lake City, UT 84070
http://www.collectivemedicaltech.com

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