k8s-kaisers-info/gitops-kaisers-info/templates/letsencrypt.yaml

apiVersion: cert-manager.io/v1
kind: Issuer
metadata:
  name: letsencrypt-staging
spec:
  acme:
    email: simon.kaiser@gmx.net # replace this
    privateKeySecretRef:
      name: staging-issuer-account-key
    server: https://acme-staging-v02.api.letsencrypt.org/directory
    solvers:
      - http01:
          ingress:
            class: traefik
        selector: {}