为Web和api指定Nginx入口

Question

我试图在两个Web界面上都将https作为域的api。我尝试了Nginx Ingress。它适用于www.example.com，但现在我需要在api.example.com上添加api。我尝试了以下方式，但无济于事。删除与api相关的部分，它对于Web界面适用，否则Web界面也不起作用。如何指定我的入口文件，以便在api.example.com上以及类似地在www.example.com域上添加https？

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-service
  annotations:
    kubernetes.io/ingress.class: nginx
    kubernetes.io/tls-acme: "true"
    nginx.ingress.kubernetes.io/add-base-url: "true"
    nginx.ingress.kubernetes.io/ssl-redirect: "true"
    certmanager.k8s.io/cluster-issuer: "letsencrypt-prod"
spec:
  tls:
    - hosts:
        - www.example.com
        - api.example.com
      secretName: example-secret
  rules:
    - host: www.example.com
      http:
        paths:
          - path: /
            backend:
              serviceName: web-cluster-ip-service
              servicePort: 5000
    - host: api.example.com
      http:
        paths:
          - path: /
            backend:
              serviceName: api-cluster-ip-service
              servicePort: 5005

certmanager文件的设置如下。

apiVersion: certmanager.k8s.io/v1alpha1
kind: Certificate
metadata:
  name: example-tls
spec:
  secretName: example-secret
  issuerRef:
    name: letsencrypt-prod
    kind: ClusterIssuer
  commonName: example.com
  dnsNames:
    - example.com
  acme:
    config:
      - http01:
          ingressClass: nginx
        domains:
          - example.com