Create service account

Ref: https://computingforgeeks.com/create-admin-user-to-access-kubernetes-dashboard/

admin-sa.yml

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: techiterian-cluster-admin
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: techiterian-cluster-admin
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
  - kind: ServiceAccount
    name: techiterian-cluster-admin
    namespace: kube-system

Run following command

kubectl apply -f admin-sa.yml

To obtain admin user token

Set a variable to store the name of the service account.

SA_NAME="techiterian-cluster-admin"

To view token

kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep ${SA_NAME} | awk '{print $1}')

Token obtained from above command can be used to access Kubernetes dashboard