streams-manifests/jupyter/base/jupyterhub-cert-issuer.yaml

apiVersion: cert-manager.io/v1
kind: Issuer
metadata:
  name: letsencrypt
spec:
  acme:
    server: https://acme-v02.api.letsencrypt.org/directory
    email: drive@sunet.se
    privateKeySecretRef:
      name: letsencrypt
    solvers:
      - http01:
          ingress: 
            class: nginx