samples/bookinfo/platform/kube/bookinfo-certificate.yaml

---
apiVersion: certmanager.k8s.io/v1alpha1
kind: ClusterIssuer
metadata:
  name: letsencrypt-staging
  namespace: dubbo-system
spec:
  acme:
    # The ACME server URL
    server: https://acme-staging-v02.api.letsencrypt.org/directory
    # Email address used for ACME registration
    email: stage@istio.io
    # Name of a secret used to store the ACME account private key
    privateKeySecretRef:
      name: letsencrypt-staging
    # Enable the HTTP-01 challenge provider
    http01: {}
---
apiVersion: certmanager.k8s.io/v1alpha1
kind: Certificate
metadata:
  name: istio-ingressgateway-certs
  namespace: dubbo-system
spec:
  secretName: istio-ingressgateway-certs
  issuerRef:
    name: letsencrypt-staging
    kind: ClusterIssuer
  commonName: bookinfo.example.com
  dnsNames:
  - bookinfo.example.com
  acme:
    config:
    - http01:
        ingressClass: none
      domains:
      - bookinfo.example.com