Kind: ClusterIssuer

https://cert-manager.io/docs/tutorials/getting-started-aks-letsencrypt/

# clusterissuer-lets-encrypt-staging.yaml
apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: letsencrypt-staging
spec:
  acme:
    server: https://acme-staging-v02.api.letsencrypt.org/directory
    email: $EMAIL_ADDRESS
    privateKeySecretRef:
      name: letsencrypt-staging
    solvers:
    - dns01:
        azureDNS:
          resourceGroupName: $AZURE_DEFAULTS_GROUP
          subscriptionID: $AZURE_SUBSCRIPTION_ID
          hostedZoneName: $DOMAIN_NAME
          environment: AzurePublicCloud
          managedIdentity:
            clientID: $USER_ASSIGNED_IDENTITY_CLIENT_ID

• https://stackoverflow.com/questions/62737424/how-to-to-enable-https-on-eks-using-nginx-ingress-and-cert-manager-with-route53

apiVersion: cert-manager.io/v1alpha2
kind: ClusterIssuer
metadata:
 name: letsencrypt-prod
 namespace: cert-manager
spec:
 acme:
   server: https://acme-v02.api.letsencrypt.org/directory
   email: MYEMAIL
   privateKeySecretRef:
     name: letsencrypt-prod
   solvers:
   - http01:
       ingress:
         class:  nginx

• kind: Certificate, kind: Order, kind: Challenge
• cert-manager.io [ /issuer | /cluster-issuer ] [ issuer. | certificaterequests. | challenges. ] kind: Issuer, kind: ClusterIssuer