问在kubernetes上运行nginx web应用程序，但它只是水平地缩放/复制

EN

kubectl -n test scale --replicas=5 -f web-api-deployment.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  namespace: test
  name: WEB-API
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: WEB-API
    spec:
      containers:
        - name: WEB-API
          image: WEB-API:latest
          env:
            - name: NGINX_WORKER_PROCESSES
              value: "1"
            - name: KEEPALIVETIMEOUT
              value: "0"
            - name: NGINX_WORKER_CONNECTIONS
              value: "2048"
      resources:
        requests:
          cpu: 500m
          memory: 500Mi
      ports:
      - containerPort: 443
      volumeMounts:
        - name: config-volume
          mountPath: /opt/config/
        - name: aws-volume
          mountPath: /root/.aws

apiVersion: v1
kind: Service
metadata:
  namespace: prd
  name: WEB-API
  annotations:
    external-dns.alpha.kubernetes.io/hostname: someaddress
    service.beta.kubernetes.io/aws-load-balancer-backend-protocol: http
    service.beta.kubernetes.io/aws-load-balancer-ssl-cert: arn:aws:acm:us-east-1:xxxxxxxxxxxxxxxx:certificate/xxxxxxxxxxxxxxxxxxxxxxx
    service.beta.kubernetes.io/aws-load-balancer-ssl-ports: "443"
    nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
  labels:
    app: WEB-API
spec:
  externalTrafficPolicy: Cluster
  ports:
    - name: https
      port: 443
      targetPort: 80
      protocol: TCP
  selector:
    app: WEB-API
  sessionAffinity: None
  type: LoadBalancer