apiVersion: apps/v1
kind: Deployment
metadata:
  name: webhook
  namespace: serving-tests
  labels:
    samples.knative.dev/release: devel
spec:
  replicas: 1
  selector:
    matchLabels:
      app: webhook
      role: webhook
  template:
    metadata:
      labels:
        app: webhook
        role: webhook
        samples.knative.dev/release: devel
    spec:
      # To avoid node becoming SPOF, spread our replicas to different nodes.
      affinity:
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - podAffinityTerm:
              labelSelector:
                matchLabels:
                  app: webhook
              topologyKey: kubernetes.io/hostname
            weight: 100

      serviceAccountName: controller
      containers:
      - name: webhook
        image: registry.ci.openshift.org/openshift/openshift-serverless-nightly:metadata-webhook
        resources:
          requests:
            cpu: 20m
            memory: 20Mi
          limits:
            cpu: 200m
            memory: 200Mi
        env:
        - name: SYSTEM_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        - name: CONFIG_LOGGING_NAME
          value: config-logging
        - name: METRICS_DOMAIN
          value: knative.dev/samples
        - name: WEBHOOK_NAME
          value: webhook

        securityContext:
          allowPrivilegeEscalation: false
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          capabilities:
            drop:
            - all

        readinessProbe: &probe
          periodSeconds: 1
          httpGet:
            scheme: HTTPS
            port: 8443
            httpHeaders:
            - name: k-kubelet-probe
              value: "webhook"
        livenessProbe: *probe

      # Our webhook should gracefully terminate by lame ducking first, set this to a sufficiently
      # high value that we respect whatever value it has configured for the lame duck grace period.
      terminationGracePeriodSeconds: 300
