Kubernetes - login to kubernetes dashboard issue

Question

So I'm trying to bring up my kubernetes dashboard (remote server) but I'm having issues. How do I resolve this issue?

using https://github.com/kubernetes/dashboard

kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.3/aio/deploy/recommended.yaml

Created a ServiceAccount

kubectl create serviceaccount dashboard-admin-sa

Created an RBAC profile

kubectl create clusterrolebinding dashboard-admin-sa --clusterrole=cluster-admin --serviceaccount=default:dashboard-admin-sa

When I load the page I get this not the kubernetes dashboard

{
  "paths": [
    "/apis",
    "/apis/",
    "/apis/apiextensions.k8s.io",
    "/apis/apiextensions.k8s.io/v1",
    "/apis/apiextensions.k8s.io/v1beta1",
    "/healthz",
    "/healthz/etcd",
    "/healthz/log",
    "/healthz/ping",
    "/healthz/poststarthook/crd-informer-synced",
    "/healthz/poststarthook/generic-apiserver-start-informers",
    "/healthz/poststarthook/start-apiextensions-controllers",
    "/healthz/poststarthook/start-apiextensions-informers",
    "/livez",
    "/livez/etcd",
    "/livez/log",
    "/livez/ping",
    "/livez/poststarthook/crd-informer-synced",
    "/livez/poststarthook/generic-apiserver-start-informers",
    "/livez/poststarthook/start-apiextensions-controllers",
    "/livez/poststarthook/start-apiextensions-informers",
    "/metrics",
    "/openapi/v2",
    "/readyz",
    "/readyz/etcd",
    "/readyz/log",
    "/readyz/ping",
    "/readyz/poststarthook/crd-informer-synced",
    "/readyz/poststarthook/generic-apiserver-start-informers",
    "/readyz/poststarthook/start-apiextensions-controllers",
    "/readyz/poststarthook/start-apiextensions-informers",
    "/readyz/shutdown",
    "/version"
  ]
}

Details:

kubectl config view

apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: DATA+OMITTED
    server: https://100.xx.xx.x27:6443
  name: kubernetes
contexts:
- context:
    cluster: kubernetes
    user: kubernetes-admin
  name: kubernetes-admin@kubernetes
current-context: kubernetes-admin@kubernetes
kind: Config
preferences: {}
users:
- name: kubernetes-admin
  user:
    client-certificate-data: REDACTED
    client-key-data: REDACTED

kubectl get svc --all-namespaces

NAMESPACE              NAME                        TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                  AGE
default                kubernetes                  ClusterIP   10.96.0.1        <none>        443/TCP                  7h19m
kube-system            kube-dns                    ClusterIP   10.96.0.10       <none>        53/UDP,53/TCP,9153/TCP   7h19m
kubernetes-dashboard   dashboard-metrics-scraper   ClusterIP   10.110.162.231   <none>        8000/TCP                 84m
kubernetes-dashboard   kubernetes-dashboard        ClusterIP   10.104.136.25    <none>        443/TCP                  84m

kubectl get pods --all-namespaces

NAMESPACE              NAME                                                     READY   STATUS    RESTARTS   AGE
kube-system            coredns-66bff467f8-jk8ql                                 1/1     Running   1          7h27m
kube-system            coredns-66bff467f8-wxsnf                                 1/1     Running   1          7h27m
kube-system            etcd-ip-100-xx-xx-x27                      1/1     Running   1          7h28m
kube-system            kube-apiserver-ip-100-xx-xx-x27            1/1     Running   1          7h28m
kube-system            kube-controller-manager-ip-100-xx-xx-x27   1/1     Running   1          7h28m
kube-system            kube-proxy-vbddf                                         1/1     Running   1          7h27m
kube-system            kube-scheduler-ip-100-xx-xx-x27            1/1     Running   1          7h28m
kube-system            weave-net-cfk2m                                          2/2     Running   3          7h27m
kubernetes-dashboard   dashboard-metrics-scraper-6b4884c9d5-fwljp               1/1     Running   0          93m
kubernetes-dashboard   kubernetes-dashboard-7f99b75bf4-x2hpq                    1/1     Running   0          93m

how are you accessing the dashboard? kubectl proxy? Share logs from kubernetes-dashboard pods — Arghya Sadhu
though the web browser 100.xx.xx.x27:6443/ui. Fairly new too kubernetes. How do i share the kubernetes-dashboard pods logs? — Lacer
add output of kubectl logs kubernetes-dashboard-7f99b75bf4-x2hpq -n kube-system. How kubernetes is deployed..minikube or something else? — Arghya Sadhu
kubernetes-dashboard-7f99b75bf4-x2hpq -n kube-system results in: bash: kubernetes-dashboard-7f99b75bf4-x2hpq: command not found. It's not using minikube. and used this article to set it up linuxtechi.com/install-kubernetes-1-7-centos7-rhel7 — Lacer

Rahul Wagh Rahul Wagh · Accepted Answer · 2020-07-15T10:16:51

Here is the really good guide which i would suggest to follow for setting up kubernetes dashaboard - https://jhooq.com/setting-up-kubernetes-dashboard/#kubernetes-dashboard-local-cluster

But what i see here is -

Keep the kubectl proxy running otherwise you will not be able to access the dashboard and it might result in http 404
Also check the validity of the token.
Check the service account, here is what i used for service account

cat <<EOF | kubectl create -f -
apiVersion: v1
kind: ServiceAccount
metadata:
  name: admin-user
  namespace: kube-system
EOF

ClusterRoleBinding

cat <<EOF | kubectl create -f -
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: admin-user
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: admin-user
  namespace: kube-system
EOF

I hope it should solve your issue. If not then please check the guide and compare your steps which you did while setting up the dashboard

Kubernetes - login to kubernetes dashboard issue

1 Answers