---
apiVersion: helm.toolkit.fluxcd.io/v2beta1
kind: HelmRelease
metadata:
  name: external-dns
  namespace: base-system
spec:
  interval: 5m
  chart:
    spec:
      chart: external-dns
      version: 6.7.2
      sourceRef:
        kind: HelmRepository
        name: bitnami
        namespace: flux-system
      interval: 1m
  values:
    provider: transip
  valuesFrom:
  - kind: Secret
    name: valuefile-external-dns
    valuesKey: values.yaml
...