Preparation

1. Deploy metrics server

First, we need to deploy metrics server before deploying kubernetes dashboard

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kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml

if you have a problem that metrics-server’s pod not running, probably because tls issue, so add --kubelet-insecure-tls on args section of deployment, then rollout restart it.

Kubernetes dashboard

2. Deploy kubernetes dashboard

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kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.7.0/aio/deploy/recommended.yaml

3. Make user credential

  • Service account
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kubectl apply -f - << EOF
apiVersion: v1
kind: ServiceAccount
metadata:
  name: admin-user
  namespace: kubernetes-dashboard
EOF
  • Cluster Role Binding
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kubectl apply -f - << EOF
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: kubernetes-dashboard
EOF
  • Getting a Bearer Token
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kubectl -n kubernetes-dashboard create token admin-user

Copy the printed token

4. Exposing kubernetes dashboard

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kubectl patch svc -n kubernetes-dashboard kubernetes-dashboard --type='json' -p '[{"op":"replace","path":"/spec/type","value":"NodePort"},{"op":"replace","path":"/spec/ports/0/nodePort","value":30000}]'

Finally access the kubernetes dashboard through your nodePort and login with the token created before

Result

kubernetes-dashboard

Refference

  1. https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/
  2. https://github.com/kubernetes/dashboard/blob/v2.7.0/docs/user/access-control/creating-sample-user.md
  3. https://github.com/kubernetes-sigs/metrics-server