CKA Practice (Simple Edition)

Straightforward CKA practice labs derived from the CKA-PREP playlist. Every question lives in its own folder with bash files:

Note: This is a living repo and may still contain bugs or rough edges. If you spot an issue—especially in lab setup or validation scripts—please open an issue so it can be fixed.

Exam prep note: These questions are designed to be similar to the CKA exam, but they are not meant be exact matches. Learn the underlying concepts in depth and try different scenarios so you can solve variations under exam conditions.

• LabSetUp.bash — set up the environment for the question.
• Questions.bash — the scenario text plus the YouTube link for the walkthrough.
• SolutionNotes.bash — a step-by-step solution when you need a hint.
• validate.bash — automatic validation checks to confirm your solution is correct.
• cleanup.bash — clean up and remove resources created during the question.

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How to Use

1. Launch the [Killercoda CKA playground](https://killercoda.com/cka or your own cluster.
2. Clone this repo inside the environment:

   git clone https://github.com/markdjones82/CKA-PREP-2025-v2.git ~/CKA-PREP-2025-v2
   cd ~/CKA-PREP-2025-v2

3. Run a question setup by number:

   scripts/run-question.sh 5

4. Work through the task, then consult SolutionNotes.bash if you need help.
5. Validate your solution:

   scripts/validate-question.sh 5

6. Clean up resources when done:

   scripts/cleanup-question.sh 5

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Validating Your Solutions

Each question has a validate.bash script that runs automated checks against your cluster to confirm the solution is correct.

Validate a single question

# By question number
scripts/validate-question.sh 5

# By directory name
scripts/validate-question.sh Question-5-HPA

Validate all questions

scripts/validate-question.sh all

The script outputs PASS or FAIL for each check, with a final score summary. Exit code is 0 if all checks pass, non-zero otherwise.

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Simulated Exam Desktop (VSCodium)

You can use VSCodium (an open-source VS Code build) inside the Killercoda simulated desktop to edit files in a familiar IDE environment, similar to what is available in the real CKA exam.

NOTE: A paid Killercoda subscription is required for the simulated desktop environment. Without it, the desktop GUI is not available and VSCodium cannot be launched graphically.

Install VSCodium

scripts/install-codium.sh

Launch VSCodium

Once installed, open it from inside your repo:

cd ~/CKA-PREP-2025-v2
codium --no-sandbox --user-data-dir .

This opens VSCodium in the current directory, allowing you to browse and edit all question files directly.

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Available Questions

#	Topic	Video
1	MariaDB — Persistent Volume	https://youtu.be/aXvvc1EB1zg
2	ArgoCD — Install via Helm (no CRDs)	https://youtu.be/e0YGRSjb8CU
3	Sidecar Container	https://youtu.be/3xraEGGQJDY
4	Resource Allocation	https://youtu.be/ZqGDdETii8c
5	HPA — HorizontalPodAutoscaler	https://youtu.be/YGkARVFKtmM
6	CRDs — cert-manager	https://youtu.be/SA1DzLQaDJs
7	PriorityClass	https://youtu.be/CZzxGyF6OHc
8	CNI & Network Policy	https://youtu.be/Uc04Ui4x3EM
9	cri-dockerd	https://youtu.be/ybzo1vXiqjU
10	Taints & Tolerations	https://youtu.be/oy6Mdqt1-jk
11	Gateway API	https://youtu.be/G9zispvOCHE
12	Ingress	https://youtu.be/sy9zABvDedQ
13	Network Policy	https://youtu.be/rA8mXYTU0W8
14	Storage Class	https://youtu.be/di7X7OHn2fc
15	Etcd Fix	https://youtu.be/IL448T6r8H4
16	NodePort Service	—
17	TLS Config	—
18	kubectl patch — Resource Limits	—
19	Resource Allocation v2 — Pod Scheduling	—