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