Cluster issuer for cert-manager

cluster-issuer.yaml

apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: letsencrypt-prod
spec:
  acme:
    email: [email protected]
    privateKeySecretRef:
      name: prod-issuer-account-key
    server: https://acme-v02.api.letsencrypt.org/directory
    solvers:
      - http01:
          ingress:
            ingressTemplate:
              metadata:
                annotations:
                  kubernetes.io/ingress.class: traefik
        selector: {}