cert_manager_issuer_crd.yaml

apiVersion: "cert-manager.io/v1alpha2"
kind: "ClusterIssuer"
metadata:
  name: ${issuer_name}
spec:
  acme:
    email: ${user_email}
    server: ${acme_server}
    privateKeySecretRef:
      name: ${secret_name}
    solvers:
      - http01:
          ingress:
            class: nginx