Updating projects for newer Operator SDK versions

- curl -sSLo - https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize/v5.3.0/kustomize_v5.3.0_$(OS)_$(ARCH).tar.gz | \
+ curl -sSLo - https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize/v5.4.2/kustomize_v5.4.2_$(OS)_$(ARCH).tar.gz | \

  # [PROMETHEUS] To enable prometheus monitor, uncomment all sections with 'PROMETHEUS'.
  #- ../prometheus
+ # [METRICS] Expose the controller manager metrics service.
+ - metrics_service.yaml

+ # Uncomment the patches line if you enable Metrics, and/or are using webhooks and cert-manager
  patches:
- # Protect the /metrics endpoint by putting it behind auth.
- # If you want your controller-manager to expose the /metrics
- # endpoint w/o any authn/z, please comment the following line.
- - path: manager_auth_proxy_patch.yaml
+ # [METRICS] The following patch will enable the metrics endpoint using HTTPS and the port :8443.
+ # More info: https://book.kubebuilder.io/reference/metrics
+ - path: manager_metrics_patch.yaml
+   target:
+     kind: Deployment

# This patch adds the args to allow exposing the metrics endpoint using HTTPS
- op: add
  path: /spec/template/spec/containers/0/args/0
  value: --metrics-bind-address=:8443
# This patch adds the args to allow securing the metrics endpoint
- op: add
  path: /spec/template/spec/containers/0/args/0
  value: --metrics-secure
# This patch adds the args to allow RBAC-based authn/authz the metrics endpoint
- op: add
  path: /spec/template/spec/containers/0/args/0
  value: --metrics-require-rbac

apiVersion: v1
kind: Service
metadata:
  labels:
    control-plane: controller-manager
    app.kubernetes.io/name: <operator-name>
    app.kubernetes.io/managed-by: kustomize
  name: controller-manager-metrics-service
  namespace: system
spec:
  ports:
    - name: https
      port: 8443
      protocol: TCP
      targetPort: 8443
  selector:
    control-plane: controller-manager

  - --leader-elect
+ - --health-probe-bind-address=:6789

     - path: /metrics
-      port: https
+      port: https # Ensure this is the name of the port that exposes HTTPS metrics
       tlsConfig:
+        # TODO(user): The option insecureSkipVerify: true is not recommended for production since it disables
+        # certificate verification. This poses a significant security risk by making the system vulnerable to
+        # man-in-the-middle attacks, where an attacker could intercept and manipulate the communication between
+        # Prometheus and the monitored services. This could lead to unauthorized access to sensitive metrics data,
+        # compromising the integrity and confidentiality of the information.
+        # Please use the following options for secure configurations:
+        # caFile: /etc/metrics-certs/ca.crt
+        # certFile: /etc/metrics-certs/tls.crt
+        # keyFile: /etc/metrics-certs/tls.key
         insecureSkipVerify: true

  - leader_election_role_binding.yaml
- # Comment the following 4 lines if you want to disable
- # the auth proxy (https://github.com/brancz/kube-rbac-proxy)
- # which protects your /metrics endpoint.
- - auth_proxy_service.yaml
- - auth_proxy_role.yaml
- - auth_proxy_role_binding.yaml
- - auth_proxy_client_clusterrole.yaml
+ # The following RBAC configurations are used to protect
+ # the metrics endpoint with authn/authz. These configurations
+ # ensure that only authorized users and service accounts
+ # can access the metrics endpoint. Comment the following
+ # permissions if you want to disable this protection.
+ # More info: https://book.kubebuilder.io/reference/metrics.html
+ - metrics_auth_role.yaml
+ - metrics_auth_role_binding.yaml
+ - metrics_reader_role.yaml

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: metrics-auth-rolebinding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: metrics-auth-role
subjects:
  - kind: ServiceAccount
    name: controller-manager
    namespace: system

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: metrics-reader
rules:
- nonResourceURLs:
  - "/metrics"
  verbs:
  - get