Owner label not being properly applied which prevents deletions

[leyshon]

I'm using external-dns in Azure AKS and with Azure DNS. It successfully creates records for me but is unable to delete them if I later delete the ingress. I've started with an empty zone and allowed external-dns to create the txt record and a cname. The logs show that the owner information is missing which is why the delete fails but I don't know why the owner information isn't coming through properly.

I'm running external-dns with --registry txt --txt-owner-id k8sCluster --txt-prefix k8sCluster
Version: v0.5.13

time="2019-05-03T11:55:31Z" level=debug msg="Retrieving Azure DNS zones."
time="2019-05-03T11:55:32Z" level=debug msg="Found 1 Azure DNS zone(s)."
time="2019-05-03T11:55:32Z" level=info msg="Updating CNAME record named 'test2' to 'k8s-test1.trafficmanager.net' for Azure DNS zone 'dev.example.net'."
time="2019-05-03T11:55:33Z" level=info msg="Updating TXT record named 'k8sCluster-test2' to '\"heritage=external-dns,external-dns/owner=k8sCluster,external-dns/resource=ingress/dev/helloworld\"' for Azure DNS zone 'dev.example.net'."
...
...
time="2019-05-03T12:05:48Z" level=debug msg="Found TXT record for 'k8scluster-test2.dev.example.net' with target '\"heritage=external-dns,external-dns/owner=k8sCluster,external-dns/resource=ingress/dev/helloworld\"'."
time="2019-05-03T12:05:48Z" level=debug msg="Found CNAME record for 'test2.dev.example.net' with target 'k8s-test1.trafficmanager.net'."
time="2019-05-03T11:05:48Z" level=debug msg="Skipping endpoint test2.dev.example.net 300 IN CNAME k8s-test1.trafficmanager.net [] because owner id does not match, found: \"\", required: \"k8sCluster\""

The ingress I've tried this with is as follows

kind: Ingress
metadata:
  annotations:
    external-dns.alpha.kubernetes.io/target: k8s-test1.trafficmanager.net
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/rewrite-target: /$1
  creationTimestamp: "2019-05-03T08:23:03Z"
  name: helloworld
  namespace: dev
spec:
  rules:
  - host: test2.dev.example.net
    http:
      paths:
      - backend:
          serviceName: helloworld
          servicePort: 80
        path: /?(.*)

[Evesy]

@leyshon Could you try setting TXT owner (and probably TXT prefix just to be safe) to be lowercase as per #1012?

[leyshon]

Thanks, that is indeed my problem and setting the values to be lowercase solves it