config/default/controller_auth_proxy_patch.yaml

# This patch inject a sidecar container which is a HTTP proxy for the 
# controller, it performs RBAC authorization against the Kubernetes API using SubjectAccessReviews.
apiVersion: apps/v1
kind: Deployment
metadata:
  name: controller
  namespace: system
spec:
  template:
    spec:
      containers:
      - name: kube-rbac-proxy
        image: registry.k8s.io/kubebuilder/kube-rbac-proxy:v0.5.0
        args:
        - "--secure-listen-address=0.0.0.0:8443"
        - "--upstream=http://127.0.0.1:8080/"
        - "--logtostderr=true"
        - "--v=10"
        ports:
        - containerPort: 8443
          name: https
      - name: controller
        args:
        - "--metrics-bind-address=127.0.0.1:8080"
        - "--leader-elect"