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Lab CKAD Pod Design

Objective

The focus of this lab is to be able to debug and access a cluster by get a pods yaml or by inspecting it's "description" through describe. Additionally, you will rollout a deployment and roll it back.

  1. Setup Lab 4 by running ./setup-lab4.sh. (without looking at sipt yet)

  2. Question to answer about cluster:

    How many pods have the label app=front-end? How many pods in total? How many pods in foo namespace? How many pods with label app=front-end in entire cluster? Display all of them?

  3. Create and run Deployment file which matches the nginx pods with the app=front-end label with replicas = 4.

  4. Change the image to nginx:1.9.1 for the deployment

    hint: k set image deploy nginx nginx=nginx:1.9.1

  5. Looking at deployment rollout history

  6. Undo the last rollout

  7. Create a Job that will run every 2 mins and print to STDOUT a random number. What is the value of the 1st random number?

    hint: shuf -i 0-999 -n1 will print a random number 0 - 999 hint: */2 * * * * is a cron for every 2 mins