external-secrets-serviceaccount.yaml

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: external-secrets
  # namespace: foo
rules:
  - apiGroups: [""]
    resources:
      - secrets
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - authorization.k8s.io
    resources:
      - selfsubjectrulesreviews
    verbs:
      - create
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: external-secrets
  namespace: foo
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: external-secrets
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: external-secrets
subjects:
  - kind: ServiceAccount
    name: external-secrets
    namespace: foo
---
apiVersion: v1
kind: Secret
metadata:
  name: external-secrets
  namespace: foo
  annotations:
    kubernetes.io/service-account.name: external-secrets
type: kubernetes.io/service-account-token
---
apiVersion: external-secrets.io/v1beta1
kind: SecretStore
metadata:
  name: foo
  namespace: foo
spec:
  provider:
    kubernetes:
      remoteNamespace: foo
      server:
        caProvider:
          type: Secret
          name: external-secrets
          key: ca.crt
      auth:
        serviceAccount:
          name: external-secrets