namespace.yaml

apiVersion: v1
kind: Namespace
metadata:
  name: ethereum-poa

role-binding.yaml

apiVersion: rbac.authorization.k8s.io/v1beta1
kind: RoleBinding
metadata:
  name: ethereum-poa-rolebinding
  namespace: ethereum-poa
roleRef:
  kind: Role
  name: ethereum-poa-role
  apiGroup: rbac.authorization.k8s.io
subjects:
- kind: ServiceAccount
  name: ethereum-poa-user
  namespace: ethereum-poa

role.yaml

apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: ethereum-poa-role
  namespace: ethereum-poa
rules:
- apiGroups: ['*']
  resources: ['*']
  verbs: ['*'] 

serviceaccount

apiVersion: v1
kind: ServiceAccount
metadata:
  name: ethereum-poa-user
  namespace: ethereum-poa