Question

How do I add clusterrole to allow access to kubernetes dashboard

Answer 1

This completely depends on what roles you need to add. You can try something like this:

apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: kube-dashboard
  labels:
    k8s-app: kube-dashboard
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: kube-dashboard
  namespace: kube-system