Labs for Certified Kubernetes Application Developer (CKAD)

These labs support training necessary for passing the Certified Kubernetes Applcation Developer (CKAD) Test.

Requirements

• git
• Kubernetes 1.20+ cluster
  • Kubernetes in Docker (KinD) note: v0.12.0 used for lab creation
  • Minikube
• curl or httpie

Notes:

Common alias k=kubectl

Labs

Lab 1: Kind Setup and Kubernetes Basics

Lab 2: Core Concepts

Lab 3: Configuration (ENV, Configs, Secrets, Tolerations and Affinity)

Lab 4: Pod Design (Labels, Deployments, Jobs and Crons)

Lab 5: Observability

Lab 6: Services and Networking

Lab 7: State Persistence

** Multi-container does not have a specific lab

Tips and References

• Tips
• Bookmarks

The bookmarks are a handy reference, however the latest changes to the test do not allow for pre-existing bookmarks to be used.

Updates since Sept 2021 Test Changes

Helm

• understand Helm fundamentals
• install a release
• understand what a Helm release is
• update a Helm release
• list installed helm releases
• identify installed helm releases with problems
• identify chart values to customize
• install a Helm release specifying values using the --set flag
• uninstall a Helm release

Docker

• create a simple Dockerfile using: FROM and COPY
• build an image with: docker build -t .
• tag (and maybe push) image
• save image to a .tar file using: docker save

Canary Deployment

• a service sends traffic to 2 deployments: 1) stable 2) canary. Out of the total number of desired pods, make sure the stable deployment runs X pods, the canary deployment runs Y pods, and the service sends traffic to both.

Custom Resource Definitions (CRD)

• discover and use resources that extend Kubernetes
• know how to identify and use them.

Thanks

Thanks to those that help to keep this project up to date.

• Curtis Hamm @SliderCO-007