add minimum kubebuilder manifests to get "make install" working

config/crd/kustomization.yaml

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+# This kustomization.yaml is not intended to be run by itself,
+# since it depends on service name and namespace that are out of this kustomize package.
+# It should be run by config/default
+resources:
+- bases/multigres.com_etcds.yaml
+- bases/multigres.com_multigateways.yaml
+- bases/multigres.com_multiorches.yaml
+- bases/multigres.com_multipoolers.yaml
+# +kubebuilder:scaffold:crdkustomizeresource
+
+patches:
+# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix.
+# patches here are for enabling the conversion webhook for each CRD
+# +kubebuilder:scaffold:crdkustomizewebhookpatch
+
+# [WEBHOOK] To enable webhook, uncomment the following section
+# the following config is for teaching kustomize how to do kustomization for CRDs.
+#configurations:
+#- kustomizeconfig.yaml

config/default/cert_metrics_manager_patch.yaml

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+# This patch adds the args, volumes, and ports to allow the manager to use the metrics-server certs.
+
+# Add the volumeMount for the metrics-server certs
+- op: add
+  path: /spec/template/spec/containers/0/volumeMounts/-
+  value:
+    mountPath: /tmp/k8s-metrics-server/metrics-certs
+    name: metrics-certs
+    readOnly: true
+
+# Add the --metrics-cert-path argument for the metrics server
+- op: add
+  path: /spec/template/spec/containers/0/args/-
+  value: --metrics-cert-path=/tmp/k8s-metrics-server/metrics-certs
+
+# Add the metrics-server certs volume configuration
+- op: add
+  path: /spec/template/spec/volumes/-
+  value:
+    name: metrics-certs
+    secret:
+      secretName: metrics-server-cert
+      optional: false
+      items:
+        - key: ca.crt
+          path: ca.crt
+        - key: tls.crt
+          path: tls.crt
+        - key: tls.key
+          path: tls.key

config/default/kustomization.yaml

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+# Adds namespace to all resources.
+namespace: kubebuilder-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: kubebuilder-
+
+# Labels to add to all resources and selectors.
+#labels:
+#- includeSelectors: true
+#  pairs:
+#    someName: someValue
+
+resources:
+- ../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 all sections with 'CERTMANAGER'. 'WEBHOOK' components are required.
+#- ../certmanager
+# [PROMETHEUS] To enable prometheus monitor, uncomment all sections with 'PROMETHEUS'.
+#- ../prometheus
+# [METRICS] Expose the controller manager metrics service.
+- metrics_service.yaml
+# [NETWORK POLICY] Protect the /metrics endpoint and Webhook Server with NetworkPolicy.
+# Only Pod(s) running a namespace labeled with 'metrics: enabled' will be able to gather the metrics.
+# Only CR(s) which requires webhooks and are applied on namespaces labeled with 'webhooks: enabled' will
+# be able to communicate with the Webhook Server.
+#- ../network-policy
+
+# Uncomment the patches line if you enable Metrics
+patches:
+# [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
+
+# Uncomment the patches line if you enable Metrics and CertManager
+# [METRICS-WITH-CERTS] To enable metrics protected with certManager, uncomment the following line.
+# This patch will protect the metrics with certManager self-signed certs.
+#- path: cert_metrics_manager_patch.yaml
+#  target:
+#    kind: Deployment
+
+# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in
+# crd/kustomization.yaml
+#- path: manager_webhook_patch.yaml
+#  target:
+#    kind: Deployment
+
+# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER' prefix.
+# Uncomment the following replacements to add the cert-manager CA injection annotations
+#replacements:
+# - source: # Uncomment the following block to enable certificates for metrics
+#     kind: Service
+#     version: v1
+#     name: controller-manager-metrics-service
+#     fieldPath: metadata.name
+#   targets:
+#     - select:
+#         kind: Certificate
+#         group: cert-manager.io
+#         version: v1
+#         name: metrics-certs
+#       fieldPaths:
+#         - spec.dnsNames.0
+#         - spec.dnsNames.1
+#       options:
+#         delimiter: '.'
+#         index: 0
+#         create: true
+#     - select: # Uncomment the following to set the Service name for TLS config in Prometheus ServiceMonitor
+#         kind: ServiceMonitor
+#         group: monitoring.coreos.com
+#         version: v1
+#         name: controller-manager-metrics-monitor
+#       fieldPaths:
+#         - spec.endpoints.0.tlsConfig.serverName
+#       options:
+#         delimiter: '.'
+#         index: 0
+#         create: true
+
+# - source:
+#     kind: Service
+#     version: v1
+#     name: controller-manager-metrics-service
+#     fieldPath: metadata.namespace
+#   targets:
+#     - select:
+#         kind: Certificate
+#         group: cert-manager.io
+#         version: v1
+#         name: metrics-certs
+#       fieldPaths:
+#         - spec.dnsNames.0
+#         - spec.dnsNames.1
+#       options:
+#         delimiter: '.'
+#         index: 1
+#         create: true
+#     - select: # Uncomment the following to set the Service namespace for TLS in Prometheus ServiceMonitor
+#         kind: ServiceMonitor
+#         group: monitoring.coreos.com
+#         version: v1
+#         name: controller-manager-metrics-monitor
+#       fieldPaths:
+#         - spec.endpoints.0.tlsConfig.serverName
+#       options:
+#         delimiter: '.'
+#         index: 1
+#         create: true
+
+# - source: # Uncomment the following block if you have any webhook
+#     kind: Service
+#     version: v1
+#     name: webhook-service
+#     fieldPath: .metadata.name # Name of the service
+#   targets:
+#     - select:
+#         kind: Certificate
+#         group: cert-manager.io
+#         version: v1
+#         name: serving-cert
+#       fieldPaths:
+#         - .spec.dnsNames.0
+#         - .spec.dnsNames.1
+#       options:
+#         delimiter: '.'
+#         index: 0
+#         create: true
+# - source:
+#     kind: Service
+#     version: v1
+#     name: webhook-service
+#     fieldPath: .metadata.namespace # Namespace of the service
+#   targets:
+#     - select:
+#         kind: Certificate
+#         group: cert-manager.io
+#         version: v1
+#         name: serving-cert
+#       fieldPaths:
+#         - .spec.dnsNames.0
+#         - .spec.dnsNames.1
+#       options:
+#         delimiter: '.'
+#         index: 1
+#         create: true
+
+# - source: # Uncomment the following block if you have a ValidatingWebhook (--programmatic-validation)
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert # This name should match the one in certificate.yaml
+#     fieldPath: .metadata.namespace # Namespace of the certificate CR
+#   targets:
+#     - select:
+#         kind: ValidatingWebhookConfiguration
+#       fieldPaths:
+#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
+#       options:
+#         delimiter: '/'
+#         index: 0
+#         create: true
+# - source:
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert
+#     fieldPath: .metadata.name
+#   targets:
+#     - select:
+#         kind: ValidatingWebhookConfiguration
+#       fieldPaths:
+#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
+#       options:
+#         delimiter: '/'
+#         index: 1
+#         create: true
+
+# - source: # Uncomment the following block if you have a DefaultingWebhook (--defaulting )
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert
+#     fieldPath: .metadata.namespace # Namespace of the certificate CR
+#   targets:
+#     - select:
+#         kind: MutatingWebhookConfiguration
+#       fieldPaths:
+#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
+#       options:
+#         delimiter: '/'
+#         index: 0
+#         create: true
+# - source:
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert
+#     fieldPath: .metadata.name
+#   targets:
+#     - select:
+#         kind: MutatingWebhookConfiguration
+#       fieldPaths:
+#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
+#       options:
+#         delimiter: '/'
+#         index: 1
+#         create: true
+
+# - source: # Uncomment the following block if you have a ConversionWebhook (--conversion)
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert
+#     fieldPath: .metadata.namespace # Namespace of the certificate CR
+#   targets: # Do not remove or uncomment the following scaffold marker; required to generate code for target CRD.
+# +kubebuilder:scaffold:crdkustomizecainjectionns
+# - source:
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert
+#     fieldPath: .metadata.name
+#   targets: # Do not remove or uncomment the following scaffold marker; required to generate code for target CRD.
+# +kubebuilder:scaffold:crdkustomizecainjectionname

config/default/manager_metrics_patch.yaml

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+# 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

config/default/metrics_service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    control-plane: controller-manager
+    app.kubernetes.io/name: kubebuilder
+    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
+    app.kubernetes.io/name: kubebuilder

config/manager/kustomization.yaml

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+resources:
+- manager.yaml
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+images:
+- name: controller
+  newName: controller
+  newTag: latest