cert.yaml

apiVersion: cert-manager.io/v1alpha2
kind: Certificate
metadata:
  name: che-tls
  namespace: che
spec:
  secretName: che-tls
  dnsNames:
    - '*.che.hnakada128.com'
  issuerRef:
    name: che-certificate-issuer
    kind: ClusterIssuer

issue.yaml

apiVersion: cert-manager.io/v1alpha2
kind: ClusterIssuer
metadata:
  name: che-certificate-issuer
spec:
  acme:
    email: [email protected]
    server: https://acme-v02.api.letsencrypt.org/directory
    privateKeySecretRef:
      name: letsencrypt
    solvers:
    - dns01:
        clouddns:
          project: my-dev-env-272422
          serviceAccountSecretRef:
            key: key.json
            name: clouddns-dns01-solver-svc-acct