The simple definition of a service and a deployment with one instance of etcd.

etcd.yaml

---

apiVersion: v1
kind: Service
metadata:
  name: etcd
  labels:
    app: etcd
spec:
  ports:
    - name: client
      port: 2379
    - name: server
      port: 2380
  selector:
    app: etcd

---

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  labels:
    name: etcd
  name: etcd
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: etcd
    spec:
      containers:
      - name: etcd
        command:
        - /usr/local/bin/etcd
        - --listen-peer-urls
        - http://0.0.0.0:2380
        - --listen-client-urls
        - http://0.0.0.0:2379
        - --advertise-client-urls
        - http://$(POD_IP):2379
        image: quay.io/coreos/etcd:v3.0.6
        env:
        - name: POD_IP
          valueFrom:
            fieldRef:
              fieldPath: status.podIP
        ports:
        - containerPort: 2379
          name: client
          protocol: TCP
        - containerPort: 2380
          name: server
          protocol: TCP