blue-green-app.yaml

apiVersion: v1
kind: Namespace
metadata:
  name: blue-green-ns
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: green-app
  namespace: blue-green-ns
  labels:
    app: green-app
spec:
  selector:
    matchLabels:
      app: green-app
  replicas: 2
  template:
    metadata:
      labels:
        app: green-app
    spec:
      containers:
      - name: green-container
        image: public.ecr.aws/e1x6y8e1/green:latest
        ports:
            - containerPort: 80
        resources:
          limits:
            memory: "100Mi"
            cpu: "200m"
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: blue-app
  namespace: blue-green-ns
  labels:
    app: blue-app
spec:
  selector:
    matchLabels:
      app: blue-app
  replicas: 2
  template:
    metadata:
      labels:
        app: blue-app
    spec:
      containers:
      - name: blue-container
        image: public.ecr.aws/e1x6y8e1/blue:latest
        ports:
            - containerPort: 80
        resources:
          limits:
            memory: "100Mi"
            cpu: "200m"
---
apiVersion: v1
kind: Service
metadata:
  namespace: blue-green-ns
  name: green-app-service
  labels:
    app: green-app
  annotations:
    alb.ingress.kubernetes.io/healthcheck-path: /green/index.html
spec:
  type: NodePort
  selector:
    app: green-app
  ports:
    - port: 80
      targetPort: 80
---
apiVersion: v1
kind: Service
metadata:
  namespace: blue-green-ns
  name: blue-app-service
  labels:
    app: blue-app
  annotations:
    alb.ingress.kubernetes.io/healthcheck-path: /blue/index.html
spec:
  type: NodePort
  selector:
    app: blue-app
  ports:
    - port: 80
      targetPort: 80