Hands-On Microservices with Kubernetes

Deploying the new (green) version

OK – we've got our new delinkcious-link:0.4 image on Docker Hub. Let's deploy it to the cluster. Remember that we want to deploy it side by side with our current (blue) deployment, which is called link-manager. Let's create a new deployment called green-link-manager. The differences it has to our blue deployment are as follows:

• The name is green-link-manager.
• The pod template spec has the deployment: green label.
• The image version is 0.4.

apiVersion: apps/v1kind: Deploymentmetadata:  name: green-link-manager  labels:    svc: link    app: manager    deployment: greenspec:  replicas: 3  selector:    matchLabels:      svc: link      app: manager      deployment: green  template:    metadata:      labels:        svc: link        app: manager deployment: green ...