I created a kubernetes cluster on some raspberry pis, but every time I try to install something with helm, it throws an error when trying to connect to the kubernetes api.

For example:

tom.mclean@node-0:~$ kubectl run -i --tty --rm test-pod --image=curlimages/curl --restart=Never -- curl -k https://kubernetes.default.svc:443
If you don't see a command prompt, try pressing enter.
curl: (6) Could not resolve host: kubernetes.default.svc
pod "test-pod" deleted
pod default/test-pod terminated (Error)

I am not sure why this is happening, I have the kubernetes service on

tom.mclean@node-0:~$ kubectl get all
NAME                 TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
service/kubernetes   ClusterIP   10.43.0.1    <none>        443/TCP   14m

And it looks like the kube-system resources are all running:

tom.mclean@node-0:~$ kubectl get all -n kube-system
NAME                                          READY   STATUS      RESTARTS        AGE
pod/coredns-56f6fc8fd7-925lk                  1/1     Running     1 (2m7s ago)    14m
pod/helm-install-traefik-crd-txf9s            0/1     Completed   0               14m
pod/helm-install-traefik-pjpsk                0/1     Completed   1               14m
pod/local-path-provisioner-5cf85fd84d-bfv2r   1/1     Running     1 (2m7s ago)    14m
pod/metrics-server-5985cbc9d7-pffn8           1/1     Running     1 (2m7s ago)    14m
pod/svclb-traefik-cf5bc218-pp7s7              2/2     Running     2 (2m7s ago)    14m
pod/svclb-traefik-cf5bc218-w64sg              2/2     Running     2 (118s ago)    13m
pod/svclb-traefik-cf5bc218-wvbtc              2/2     Running     2 (5m12s ago)   13m
pod/traefik-57b79cf995-4226q                  1/1     Running     1 (2m7s ago)    14m

NAME                     TYPE           CLUSTER-IP     EXTERNAL-IP                              PORT(S)                      AGE
service/kube-dns         ClusterIP      10.43.0.10     <none>                                   53/UDP,53/TCP,9153/TCP       14m
service/metrics-server   ClusterIP      10.43.183.6    <none>                                   443/TCP                      14m
service/traefik          LoadBalancer   10.43.83.165   10.42.42.100,10.42.42.101,10.42.42.102   80:32205/TCP,443:30887/TCP   14m

NAME                                    DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR   AGE
daemonset.apps/svclb-traefik-cf5bc218   3         3         3       3            3           <none>          14m

NAME                                     READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/coredns                  1/1     1            1           14m
deployment.apps/local-path-provisioner   1/1     1            1           14m
deployment.apps/metrics-server           1/1     1            1           14m
deployment.apps/traefik                  1/1     1            1           14m

NAME                                                DESIRED   CURRENT   READY   AGE
replicaset.apps/coredns-56f6fc8fd7                  1         1         1       14m
replicaset.apps/local-path-provisioner-5cf85fd84d   1         1         1       14m
replicaset.apps/metrics-server-5985cbc9d7           1         1         1       14m
replicaset.apps/traefik-57b79cf995                  1         1         1       14m

NAME                                 STATUS     COMPLETIONS   DURATION   AGE
job.batch/helm-install-traefik       Complete   1/1           53s        14m
job.batch/helm-install-traefik-crd   Complete   1/1           52s        14m

How can I fix this?