scaffold controller

config/default/kustomization.yaml

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+# Adds namespace to all resources.
+namespace: hydra-maester-system
+
+# Value of this field is prepended to the
+# names of all resources, e.g. a deployment named
+# "wordpress" becomes "alices-wordpress".
+# Note that it should also match with the prefix (text before '-') of the namespace
+# field above.
+namePrefix: hydra-maester-
+
+# Labels to add to all resources and selectors.
+#commonLabels:
+#  someName: someValue
+
+bases:
+- ../crd
+- ../rbac
+- ../manager
+# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in crd/kustomization.yaml
+#- ../webhook
+# [CERTMANAGER] To enable cert-manager, uncomment next line. 'WEBHOOK' components are required.
+#- ../certmanager
+
+patches:
+- manager_image_patch.yaml
+  # Protect the /metrics endpoint by putting it behind auth.
+  # Only one of manager_auth_proxy_patch.yaml and
+  # manager_prometheus_metrics_patch.yaml should be enabled.
+- manager_auth_proxy_patch.yaml
+  # If you want your controller-manager to expose the /metrics
+  # endpoint w/o any authn/z, uncomment the following line and
+  # comment manager_auth_proxy_patch.yaml.
+  # Only one of manager_auth_proxy_patch.yaml and
+  # manager_prometheus_metrics_patch.yaml should be enabled.
+#- manager_prometheus_metrics_patch.yaml
+
+# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in crd/kustomization.yaml
+#- manager_webhook_patch.yaml
+
+# [CAINJECTION] Uncomment next line to enable the CA injection in the admission webhooks.
+# Uncomment 'CAINJECTION' in crd/kustomization.yaml to enable the CA injection in the admission webhooks.
+# 'CERTMANAGER' needs to be enabled to use ca injection
+#- webhookcainjection_patch.yaml

config/default/manager_auth_proxy_patch.yaml

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+# This patch inject a sidecar container which is a HTTP proxy for the controller manager,
+# it performs RBAC authorization against the Kubernetes API using SubjectAccessReviews.
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: controller-manager
+  namespace: system
+spec:
+  template:
+    spec:
+      containers:
+      - name: kube-rbac-proxy
+        image: gcr.io/kubebuilder/kube-rbac-proxy:v0.4.0
+        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: manager
+        args:
+        - "--metrics-addr=127.0.0.1:8080"

config/default/manager_image_patch.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: controller-manager
+  namespace: system
+spec:
+  template:
+    spec:
+      containers:
+      # Change the value of image field below to your controller image URL
+      - image: IMAGE_URL
+        name: manager

config/default/manager_prometheus_metrics_patch.yaml

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+# This patch enables Prometheus scraping for the manager pod.
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: controller-manager
+  namespace: system
+spec:
+  template:
+    metadata:
+      annotations:
+        prometheus.io/scrape: 'true'
+    spec:
+      containers:
+      # Expose the prometheus metrics on default port
+      - name: manager
+        ports:
+        - containerPort: 8080
+          name: metrics
+          protocol: TCP

config/default/manager_webhook_patch.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: controller-manager
+  namespace: system
+spec:
+  template:
+    spec:
+      containers:
+      - name: manager
+        ports:
+        - containerPort: 443
+          name: webhook-server
+          protocol: TCP
+        volumeMounts:
+        - mountPath: /tmp/k8s-webhook-server/serving-certs
+          name: cert
+          readOnly: true
+      volumes:
+      - name: cert
+        secret:
+          defaultMode: 420
+          secretName: webhook-server-cert

config/default/webhookcainjection_patch.yaml

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+# This patch add annotation to admission webhook config and
+# the variables $(NAMESPACE) and $(CERTIFICATENAME) will be substituted by kustomize.  
+apiVersion: admissionregistration.k8s.io/v1beta1
+kind: MutatingWebhookConfiguration
+metadata:
+  name: mutating-webhook-configuration
+  annotations:
+    certmanager.k8s.io/inject-ca-from: $(NAMESPACE)/$(CERTIFICATENAME)
+---
+apiVersion: admissionregistration.k8s.io/v1beta1
+kind: ValidatingWebhookConfiguration
+metadata:
+  name: validating-webhook-configuration
+  annotations:
+    certmanager.k8s.io/inject-ca-from: $(NAMESPACE)/$(CERTIFICATENAME)