start from an easier starting point

charts/dns/templates/external-dns.yaml

@@ -0,0 +1,38 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: external-dns
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: external-dns
+  template:
+    metadata:
+      labels:
+        app: external-dns
+    spec:
+      serviceAccountName: external-dns
+      containers:
+      - name: external-dns
+        image: bitnami/external-dns:latest
+        args:
+          - --source=service
+          - --source=ingress
+          - --provider=rfc2136
+          - --rfc2136-host=bind-master.dns.svc.cluster.local
+          - --rfc2136-port=53
+          - --rfc2136-zone=hxme.net
+          - --rfc2136-tsig-secret=$(RFC2136_TSIG_SECRET)
+          - --rfc2136-tsig-secret-alg=hmac-sha256
+          - --rfc2136-tsig-keyname=externaldns-key
+          - --policy=sync
+          - --registry=txt
+          - --txt-owner-id=my-cluster
+        env:
+            - name: RFC2136_TSIG_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: dns-secrets
+                  key: externaldns-secret