apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-external
  labels:
    app.kubernetes.io/name: nginx-external
spec:
  replicas: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: nginx-external
  template:
    metadata:
      labels:
        app.kubernetes.io/name: nginx-external
    spec:
      containers:
      - name: nginx-ingress
        image: registry.k8s.io/ingress-nginx/controller:v1.7.0
        args:
          - /nginx-ingress-controller
          - --ingress-class=nginx-external
          - --configmap=$(POD_NAMESPACE)/nginx-configuration
          - --report-ingress-status
        env:
          - name: POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: POD_NAMESPACE
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
        ports:
          - name: http
            containerPort: 80
          - name: https
            containerPort: 443