apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: web
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: hitcounter
        tier: frontend
    spec:
      containers:
      - name: hitcounter
        image: kkonstan/hitcounter:v1.0
        ports:
        - containerPort: 80
        env:
        - name: WHO
          valueFrom:
            configMapKeyRef:
              name: hitcounter
              key: who

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: web
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: hitcounter
        tier: frontend
    spec:
      containers:
      - name: hitcounter
        image: kkonstan/hitcounter:v1.1
        ports:
        - containerPort: 80
        env:
        - name: WHO
          valueFrom:
            configMapKeyRef:
              name: hitcounter
              key: who

Update kubernetes web deployment to use v1.1
Update kubernetes web deployment to use v1.1
