This lab provides practice scenarios to help prepare you for the Certified Kubernetes Application Developer (CKAD) exam. You will be presented with tasks to complete, as well as server(s) and/or an existing Kubernetes cluster to complete them in. You will need to use your knowledge of Kubernetes to successfully complete the provided tasks, much like you would on the real CKAD exam. Good luck!
Successfully complete this lab by achieving the following learning objectives:
- Create a Blue/Green Setup for an Existing Deployment
Create a blue/green Deployment setup for the existing
web-frontendDeployment in the
You can find a Deployment manifest for
web-frontendon the CLI server at
/home/cloud_user/bluegreen/web-frontend.yml. Feel free to copy this manifest in order to create your green Deployment.
Give the green Deployment the name
web-frontend-greenand set the
greenin the Pod template.
Once you have created the green Deployment and verified that it is working, modify the
web-frontend-svcService so that it points only to the new green Deployment’s Pods. This is a NodePort Service, and you can test it by reaching out to port
30081on any of the cluster nodes, for example:
- Create a Canary Setup for an Existing Deployment
Create a canary Deployment setup for the existing
authDeployment in the
There is a manifest file for the existing Deployment at
/home/cloud_user/canary/auth.yml. You can copy this file to create your canary Deployment.
Give the canary Deployment the name
auth-canary, and set the
envlabel in the Pod template to
There is a Service called
auth-svc, also in the
canaryNamespace. Modify this Service to direct traffic to both the main and canary Deployments. Configure your setup so that there will be
4total replicas, including both the main Deployment and the canary Deployment, and so that approximately
25%of traffic will go to the canary Pod(s). Note that you may need to modify the original main Deployment in order to accomplish this.
The Service is a NodePort Service, and you can test it by reaching out to port
30082on any of the cluster nodes, for example: