Thanks Ian!

I think the 'kubernetes' service you are talking about is the following
one, right?
$ kubectl describe svc kubernetes
Name:                   kubernetes
Namespace:              default
Labels:                 component=apiserver
                        provider=kubernetes
Selector:               <none>
Type:                   ClusterIP
IP:                     10.0.0.1
Port:                   https   443/TCP
Endpoints:              192.168.122.190:6443
Session Affinity:       ClientIP
No events.

So dashboard access apiserver via this service's ClusterIP and port (
10.0.0.1:443), right? But how can 10.0.0.1:443 is reachable from dashboard?
Is it handled by kube-proxy in the node on which the dashboard is running?



Thanks,
Qian Zhang

On Wed, Jun 1, 2016 at 10:06 AM, 'Ian Lewis' via Containers at Google <
[email protected]> wrote:

> The dashboard uses the 'kubernetes' service that is available inside the
> cluster to access the API. The default service account
> <http://kubernetes.io/docs/user-guide/service-accounts/> for pods mounts
> tokens to each container at /var/run/secrets/kubernetes.io/serviceaccount/ 
> that
> allow the container to authenticate with the API.
>
> Hope that helps.
>
> On Wed, Jun 1, 2016 at 10:39 AM Qian Zhang <[email protected]> wrote:
>
>> Hi,
>>
>> I have deployed Kubernetes dashboard in my Kubernetes cluster with the
>> following two yaml files:
>>
>> https://github.com/kubernetes/kubernetes/blob/master/cluster/addons/dashboard/dashboard-controller.yaml
>>
>> https://github.com/kubernetes/kubernetes/blob/master/cluster/addons/dashboard/dashboard-service.yaml
>>
>> The dashboard works well. I am just curious how the dashboard can know
>> where the apiserver is? I think the dashboard need to access apiserver to
>> query info and create objects, but in dashboard-controller.yaml, it seems
>> there is no any info about the IP/port of apiserver, so how can dashboard
>> connect to the apiserver?
>>
>> And in another hand, I can access the dashboard through apiserver 
>> (http://<apiserver
>> IP>:<api server
>> port>/api/v1/proxy/namespaces/kube-system/services/kubernetes-dashboard/),
>> can anyone let me know how it works? Actually I found in the host on which
>> apiserver is running, I can not access the dashboard via its service's
>> cluster IP since I do not have kube-proxy running on that host, so I am
>> curious why I can access dashboard through api server.
>>
>>
>> Thanks,
>> Qian
>>
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