Cannot access to Kubernetes Dashboard

Question

I have a K8s cluster (1 master, 2 workers) running on 3 vagrant VMs on my computer.

I've installed kubernetes dashboard, like explained here.

All my pods are running correctly:

kubectl get pods -o wide --namespace=kube-system
NAME                                          READY   STATUS    RESTARTS   AGE   IP              NODE                   NOMINATED NODE   READINESS GATES
coredns-fb8b8dccf-n5cpm                       1/1     Running   1          61m   10.244.0.4      kmaster.example.com    <none>           <none>
coredns-fb8b8dccf-qwcr4                       1/1     Running   1          61m   10.244.0.5      kmaster.example.com    <none>           <none>
etcd-kmaster.example.com                      1/1     Running   1          60m   172.42.42.100   kmaster.example.com    <none>           <none>
kube-apiserver-kmaster.example.com            1/1     Running   1          60m   172.42.42.100   kmaster.example.com    <none>           <none>
kube-controller-manager-kmaster.example.com   1/1     Running   1          60m   172.42.42.100   kmaster.example.com    <none>           <none>
kube-flannel-ds-amd64-hcjsm                   1/1     Running   1          61m   172.42.42.100   kmaster.example.com    <none>           <none>
kube-flannel-ds-amd64-klv4f                   1/1     Running   3          56m   172.42.42.102   kworker2.example.com   <none>           <none>
kube-flannel-ds-amd64-lmpnd                   1/1     Running   2          59m   172.42.42.101   kworker1.example.com   <none>           <none>
kube-proxy-86qsw                              1/1     Running   1          59m   10.0.2.15       kworker1.example.com   <none>           <none>
kube-proxy-dp29s                              1/1     Running   1          61m   172.42.42.100   kmaster.example.com    <none>           <none>
kube-proxy-gqqq9                              1/1     Running   1          56m   10.0.2.15       kworker2.example.com   <none>           <none>
kube-scheduler-kmaster.example.com            1/1     Running   1          60m   172.42.42.100   kmaster.example.com    <none>           <none>
kubernetes-dashboard-5f7b999d65-zqbbz         1/1     Running   1          28m   10.244.1.3      kworker1.example.com   <none>           <none>

As you can see the dashboard is in "Running" status.

I also ran kubectl proxy and it's serving on 127.0.0.1:8001.

But when I try to open http://127.0.0.1:8001/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/ I have the error:

This site can’t be reached
127.0.0.1 refused to connect.
ERR_CONNECTION_REFUSED

I'm trying to open the dashboard directly on my computer, not inside the vagram VM. Could that be the problem? If yes, how to solve it ? I'm able to ping my VM from my computer without any issue.

Thanks for helping me.

EDIT

Here is the ouput of kubectl get svc -n kube-system

NAME                   TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                  AGE
kube-dns               ClusterIP   10.96.0.10      <none>        53/UDP,53/TCP,9153/TCP   96m
kubernetes-dashboard   NodePort    10.109.230.83   <none>        443:30089/TCP            63m

I assume you have full connectivity from your local machine to your vagrant vms. Did you check the kubernetes dashboard logs? — Esteban Garcia
can you try this url. 127.0.0.1:8001/api/v1/namespaces/kube-system/services/… — Siva Gnanam
@EstebanGarcia what do you mean by "full connectivity" ? I can ping and ssh. — iAmoric

Yavuz Sert Yavuz Sert · Accepted Answer · 2019-04-12T11:13:17

Kubernetes dashboard runs only in the cluster as default. You can control it with get svc command:

kubectl get svc -n kube-system

Default type of that service is ClusterIp, to reach from outside of the cluster yo have to change it to NodePort. To change it follow this doc.

Cannot access to Kubernetes Dashboard

1 Answers