external-dns.yaml

---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: external-dns
rules:
- apiGroups: [""]
  resources: ["services","endpoints","pods"]
  verbs: ["get","watch","list"]
- apiGroups: ["extensions","networking.k8s.io"]
  resources: ["ingresses"]
  verbs: ["get","watch","list"]
- apiGroups: [""]
  resources: ["nodes"]
  verbs: ["list"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: external-dns-viewer
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: external-dns
subjects:
- kind: ServiceAccount
  name: external-dns
  namespace: split-dns
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: external-dns
  namespace: split-dns
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: external-dns
  namespace: split-dns
spec:
  replicas: 1
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: external-dns
  template:
    metadata:
      labels:
        app: external-dns
    spec:
      serviceAccountName: external-dns
      containers:
      - name: external-dns
        image: registry.k8s.io/external-dns/external-dns:v0.16.1
        args:
        - --source=ingress
        - --provider=coredns
        - --log-level=debug # debug only
        env:
        - name: ETCD_URLS
          value: http://etcd-0.etcd-headless.split-dns:2379,http://etcd-1.etcd-headless.split-dns:2379,http://etcd-2.etcd-headless.split-dns:2379
        resources:
          limits:
            memory: 200Mi
          requests:
            cpu: 30m
            memory: 100Mi