k8s simple a/b testing

serverweb.yml

apiVersion: v1
kind: Service
metadata:
  creationTimestamp: null
  labels:
    app: my-py-server
  name: my-py-server
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 80
  selector:
    app: generic-py-server
  type: NodePort

---

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  generation: 1
  labels:
    run: server-web-a
  name: server-web-a
spec:
  replicas: 1
  selector:
    matchLabels:
      run: server-web-a
  strategy:
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 1
    type: RollingUpdate
  template:
    metadata:
      labels:
        run: server-web-a
        app: generic-py-server
    spec:
      containers:
      - image: 127.0.0.1:30151/serverweb:vA
        name: serverweba
        resources: {}

---

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  generation: 1
  labels:
    run: server-web-b
  name: server-web-b
spec:
  replicas: 1
  selector:
    matchLabels:
      run: server-web-b
  strategy:
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 1
    type: RollingUpdate
  template:
    metadata:
      labels:
        run: server-web-b
        app: generic-py-server
    spec:
      containers:
      - image: 127.0.0.1:30151/serverweb:vB
        name: serverwebb
        resources: {}