cert-manager-issuer.yaml

apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: lets-encrypt-http-issuer
spec:
  # ACME issuer configuration
  # `email` - the email address to be associated with the ACME account (make sure it's a valid one)
  # `server` - the URL used to access the ACME server’s directory endpoint
  # `privateKeySecretRef` - Kubernetes Secret to store the automatically generated ACME account private key
  acme:
    email: <VALID_EMAIL_ADDRESS_HERE>
    server: https://acme-v02.api.letsencrypt.org/directory
    privateKeySecretRef:
      name: letsencrypt-nginx-private-key-2025
    solvers:
      # Use the HTTP-01 challenge provider
      - http01:
          ingress:
            class: nginx