--- apiVersion: certmanager.k8s.io/v1alpha1 kind: ClusterIssuer metadata: name: letsencrypt-staging namespace: istio-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: istio-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