hydra-maester/config/certmanager/certificate.yaml

# The following manifests contain a self-signed issuer CR and a certificate CR.
# More document can be found at https://docs.cert-manager.io
apiVersion: certmanager.k8s.io/v1alpha1
kind: Issuer
metadata:
  name: selfsigned-issuer
  namespace: system
spec:
  selfSigned: {}
---
apiVersion: certmanager.k8s.io/v1alpha1
kind: Certificate
metadata:
  name: serving-cert # this name should match the one appeared in kustomizeconfig.yaml
  namespace: system
spec:
  # $(SERVICENAME) and $(NAMESPACE) will be substituted by kustomize
  commonName: $(SERVICENAME).$(NAMESPACE).svc
  dnsNames:
    - $(SERVICENAME).$(NAMESPACE).svc.cluster.local
  issuerRef:
    kind: Issuer
    name: selfsigned-issuer
  secretName: webhook-server-cert # this secret will not be prefixed, since it's not managed by kustomize