SkyDNS Kubernetes replication controller resource

skydns-rc.yaml

--- 
apiVersion: v1
kind: ReplicationController
metadata: 
  labels: 
    k8s-app: kube-dns
    kubernetes.io/cluster-service: "true"
    version: v5
  name: kube-dns-v5
  namespace: kube-system
spec: 
  replicas: 1
  selector: 
    k8s-app: kube-dns
    version: v5
  template: 
    metadata: 
      labels: 
        k8s-app: kube-dns
        kubernetes.io/cluster-service: "true"
        version: v5
    spec: 
      containers: 
        - 
          command: 
            - /usr/local/bin/etcd
            - "-listen-client-urls"
            - "http://127.0.0.1:2379,http://127.0.0.1:4001"
            - "-advertise-client-urls"
            - "http://127.0.0.1:2379,http://127.0.0.1:4001"
            - "-initial-cluster-token"
            - skydns-etcd
          image: "gcr.io/google_containers/etcd:2.0.9"
          name: etcd
          resources: 
            limits: 
              cpu: 100m
              memory: 50Mi
        - 
          args: 
            - "-domain=cluster.local"
            - "-kube_master_url=http://10.7.114.81:8080"
          image: "gcr.io/google_containers/kube2sky:1.11"
          name: kube2sky
          resources: 
            limits: 
              cpu: 100m
              memory: 50Mi
        - 
          args: 
            - "-machines=http://localhost:4001"
            - "-addr=0.0.0.0:53"
            - "-domain=cluster.local"
          image: "gcr.io/google_containers/skydns:2015-03-11-001"
          livenessProbe: 
            exec: 
              command: 
                - /bin/sh
                - "-c"
                - "nslookup kubernetes.default.svc.cluster.local localhost >/dev/null"
            initialDelaySeconds: 30
            timeoutSeconds: 5
          name: skydns
          ports: 
            - 
              containerPort: 53
              name: dns
              protocol: UDP
            - 
              containerPort: 53
              name: dns-tcp
              protocol: TCP
          resources: 
            limits: 
              cpu: 100m
              memory: 50Mi
      dnsPolicy: Default

Taken from the Kubernetes v0.21.1 source code base. The example uses cluster.local as the domain. Choose your own portal IP address.