production_ingress.yaml

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
# snip #
  annotations:
  # Add our annotation
    cert-manager.io/cluster-issuer: letsencrypt-production
# end snip #
spec:
  # snip #
  # Add our host and Secret configuration
  tls:
  - hosts:
    - www.example.com
    - example.com
    secretName: wp-example-com-tls-production
# end snip #