What is the CKA?

The Certified Kubernetes Administrator (CKA) certification proves you have hands-on experience managing Kubernetes clusters.

How did I learn Kubernetes?

Three years ago, I purchased a 4-day classroom Kubernetes Administration course (LFS458) from FastLane. It was not cheap, but FastLane has provided us with a good trainer. It was worth it.

After I had taken the classroom Kubernetes training, I started creating my CKA Labs blog post series. After a few years, I had created 19 of those, but I still had not covered all the topics needed for the CKA exam. Therefore, I tried to force myself to take the exam and I bought a new LFS458 course from the Linux Foundation, bundled with the CKA certification test.

Meanwhile, I know that the certification test alone would have been sufficient for me.


  • Take a classroom training or a good online training. If you prefer to take a cheaper online course: I have seen LinkedIn statements (e.g. here) from freshly CKA-certified users, that KodeKloud might be a good alternative to the official Linux Foundation Course LFS458.
  • Enroll in a CKA exam on the corresponding Linux Foundation web page.
  • Prepare for the exam by going through the Killercoda web page: they are free of charge:
  • Plan for taking one or two Killershell sessions
    • note that two 36-hour sessions are included if you have enrolled in the CKA exam. You just need to log in with your Linux Foundation login.
    • there is a 2-hour timer, but the session will continue for another 34 hours after the timer is up. Be prepared to spend much more time. It has taken me 5 or 6 hours to get through all of the exam tasks.
    • You will be given 25 examination tasks, which are more challenging than the real exam tasks.
    • You can see your current score at any time.
    • Killershell also provides you with sample solutions in case you have failed in any of the tasks. Make use of those! You may also save them as a full webpage using your browser so you can consult them after the 36-hour session is up.
  • Schedule the exam
    • Plan for your first exam attempt. Consider that your first attempt should be taken 3 days or more before the expiry of your purchase if you plan for a possible free retake of the exam. The reasons are:
      • It is not possible to schedule an exam for a date after the purchase expiry. This is also true for the retake exam. <– this has proven to be false. A friend of mine has managed to schedule a retake exam a few days after the expiry of his purchase. However, this does not seem to be documented anywhere and we do not know exactly, how long you can retake the exam.
      • You cannot schedule a retake before and 24 hours after the first attempt.
      • You need to schedule an exam a minimum of 24 hours before the desired exam date.
  • Take the exam
    • and make sure you have the right hardware:
      • Use a large 4k display
        • the Linux Foundation recommends >15 inch and 1080p. I think both are way too small. I had used my in-built 1080p full HD screen, but I had problems working with the desktop provided during the exam. The secure browser has a header, the virtual desktop has a header, and the exam task pane on the left is taking space away. I had problems quickly switching between the terminal and the browser on the virtual desktop.
      • Only one screen may be active
        • If you use an external 4k screen, make sure the in-built screen of your laptop is switched off: the secure browser you need to use during the exam does not allow for two screens to be switched on. You still can use your built-in camera, if you switch off the built-in screen via software configuration
    • more recommendations are found here

Good luck…

Sorry for boasting: Killercoda and Killershell have helped me to pass the exam on my first attempt: good luck to you as well!

My Exam Score: 88% on the first try (sorry for boasting)

…and send a like and/or comment on my LinkedIn post if those instructions have helped you with learning for and hopefully passing the exam


Diese Website verwendet Akismet, um Spam zu reduzieren. Erfahre mehr darüber, wie deine Kommentardaten verarbeitet werden.