2.install-kubernetes-gatewayapi-webhook-v1.0.0.yaml

# Copyright 2023 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#
# Gateway API deprecated webhook install
#
---
#
# config/webhook/0-namespace.yaml
#
apiVersion: v1
kind: Namespace
metadata:
  name: gateway-system
  labels:
    pod-security.kubernetes.io/enforce: restricted
    pod-security.kubernetes.io/audit: restricted
    pod-security.kubernetes.io/warn: restricted
---
#
# config/webhook/admission_webhook.yaml
#
apiVersion: admissionregistration.k8s.io/v1
kind: ValidatingWebhookConfiguration
metadata:
  name: gateway-api-admission
webhooks:
- name: validate.gateway.networking.k8s.io
  matchPolicy: Equivalent
  rules:
  - operations: [ "CREATE" , "UPDATE" ]
    apiGroups: [ "gateway.networking.k8s.io" ]
    apiVersions: [ "v1alpha2", "v1beta1" ]
    resources: [ "gateways", "gatewayclasses", "httproutes" ]
  failurePolicy: Fail
  sideEffects: None
  admissionReviewVersions:
  - v1
  clientConfig:
    service:
      name: gateway-api-admission-server
      namespace: gateway-system
      path: "/validate"
---
apiVersion: v1
kind: Service
metadata:
  labels:
    name: gateway-api-webhook-server
  name: gateway-api-admission-server
  namespace: gateway-system
spec:
  type: ClusterIP
  ports:
  - name: https-webhook
    port: 443
    targetPort: 8443
  selector:
    name: gateway-api-admission-server
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: gateway-api-admission-server
  namespace: gateway-system
  labels:
    name: gateway-api-admission-server
spec:
  replicas: 1
  selector:
    matchLabels:
      name: gateway-api-admission-server
  template:
    metadata:
      name: gateway-api-admission-server
      labels:
        name: gateway-api-admission-server
    spec:
      containers:
      - name: webhook
        image: registry.k8s.io/gateway-api/admission-server:v1.0.0
        imagePullPolicy: IfNotPresent
        args:
        - -logtostderr
        - --tlsCertFile=/etc/certs/cert
        - --tlsKeyFile=/etc/certs/key
        - -v=10
        - 2>&1
        ports:
        - containerPort: 8443
          name: webhook
        resources:
          limits:
            memory: 50Mi
            cpu: 100m
          requests:
            memory: 50Mi
            cpu: 100m
        volumeMounts:
        - name: webhook-certs
          mountPath: /etc/certs
          readOnly: true
        securityContext:
          allowPrivilegeEscalation: false
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          runAsUser: 65532
          runAsGroup: 65532
          capabilities:
            drop:
            - "ALL"
          seccompProfile:
            type: RuntimeDefault
      volumes:
      - name: webhook-certs
        secret:
          secretName: gateway-api-admission
---
#
# config/webhook/certificate_config.yaml
#
apiVersion: v1
kind: ServiceAccount
metadata:
  name: gateway-api-admission
  labels:
    name: gateway-api-webhook
  namespace: gateway-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: gateway-api-admission
  labels:
    name: gateway-api
rules:
- apiGroups:
  - admissionregistration.k8s.io
  resources:
  - validatingwebhookconfigurations
  verbs:
  - get
  - update
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: gateway-api-admission
  annotations:
  labels:
    name: gateway-api-webhook
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: gateway-api-admission
subjects:
- kind: ServiceAccount
  name: gateway-api-admission
  namespace: gateway-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: gateway-api-admission
  annotations:
  labels:
    name: gateway-api-webhook
  namespace: gateway-system
rules:
- apiGroups:
  - ''
  resources:
  - secrets
  verbs:
  - get
  - create
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: gateway-api-admission
  annotations:
  labels:
    name: gateway-api-webhook
  namespace: gateway-system
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: gateway-api-admission
subjects:
- kind: ServiceAccount
  name: gateway-api-admission
  namespace: gateway-system
---
apiVersion: batch/v1
kind: Job
metadata:
  name: gateway-api-admission
  annotations:
  labels:
    name: gateway-api-webhook
  namespace: gateway-system
spec:
  template:
    metadata:
      name: gateway-api-admission-create
      labels:
        name: gateway-api-webhook
    spec:
      containers:
      - name: create
        image: registry.k8s.io/ingress-nginx/kube-webhook-certgen:v1.1.1
        imagePullPolicy: IfNotPresent
        args:
        - create
        - --host=gateway-api-admission-server,gateway-api-admission-server.$(POD_NAMESPACE).svc
        - --namespace=$(POD_NAMESPACE)
        - --secret-name=gateway-api-admission
        env:
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        securityContext:
          allowPrivilegeEscalation: false
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          runAsUser: 2000
          runAsGroup: 2000
          capabilities:
            drop:
            - "ALL"
          seccompProfile:
            type: RuntimeDefault
      restartPolicy: OnFailure
      serviceAccountName: gateway-api-admission
      securityContext:
        runAsNonRoot: true
        runAsUser: 2000
        runAsGroup: 2000
---
apiVersion: batch/v1
kind: Job
metadata:
  name: gateway-api-admission-patch
  labels:
    name: gateway-api-webhook
  namespace: gateway-system
spec:
  template:
    metadata:
      name: gateway-api-admission-patch
      labels:
        name: gateway-api-webhook
    spec:
      containers:
      - name: patch
        image: registry.k8s.io/ingress-nginx/kube-webhook-certgen:v1.1.1
        imagePullPolicy: IfNotPresent
        args:
        - patch
        - --webhook-name=gateway-api-admission
        - --namespace=$(POD_NAMESPACE)
        - --patch-mutating=false
        - --patch-validating=true
        - --secret-name=gateway-api-admission
        - --patch-failure-policy=Fail
        env:
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        securityContext:
          allowPrivilegeEscalation: false
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          runAsUser: 2000
          runAsGroup: 2000
          capabilities:
            drop:
            - "ALL"
          seccompProfile:
            type: RuntimeDefault
      restartPolicy: OnFailure
      serviceAccountName: gateway-api-admission
      securityContext:
        runAsNonRoot: true
        runAsUser: 2000
        runAsGroup: 2000