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Follow my journey from DevOps Engineer to Kubestronaut as I explore Kubernetes, CNCF certifications, cloud-native technologies, and hands-on learning. In this series, I share my experiences preparing for and passing certifications such as CKA, CKAD, and CKS, along with exam strategies, study resources, troubleshooting lessons, and practical insights gained from real-world Kubernetes environments. Whether you're just starting with Kubernetes or pursuing advanced CNCF certifications, I hope these experiences help guide your own cloud-native journey.
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Shahzad Ahmad | Kubernetes, DevOps & Cloud Native Journey
32 posts
Senior DevOps Engineer documenting my journey through Kubernetes, CNCF certifications, cloud-native technologies, platform engineering, and automation. Here you'll find hands-on tutorials, certification experiences (CKA, CKAD, CKS), exam strategies, troubleshooting guides, and lessons learned from real-world DevOps and Kubernetes environments. My goal is to share practical knowledge, help others in their cloud-native journey, and ultimately document the path from DevOps Engineer to Kubestronaut.
After earning the Certified Kubernetes Administrator (CKA) certification and reflecting on my preparation and exam-day experience, I realized there were several mistakes I made — or nearly made — that could have cost me valuable points.
The CKA exam is not a traditional certification exam.
There are no multiple-choice questions.
No guessing.
No theory-only questions.
You are given a live Kubernetes environment and expected to solve real-world tasks under time pressure.
Looking back, these are the 10 mistakes I wish I knew about before taking the exam.
One of the biggest misconceptions about CKA is that you need to memorize every command and YAML definition.
You don’t.
The Kubernetes documentation is available during the exam.
Instead of memorizing everything, focus on:
Understanding concepts
Knowing where information lives
Navigating documentation quickly
The faster you can find information, the more efficient you’ll be.
Watching videos feels productive.
But Kubernetes is learned in the terminal.
The CKA exam rewards hands-on skills.
Spend more time:
Creating resources
Editing YAML
Troubleshooting issues
Working with kubectl
The terminal should feel like your second home before exam day.
Many candidates focus heavily on deployments and configuration.
But troubleshooting is where real Kubernetes skills are tested.
Practice solving:
CrashLoopBackOff
ImagePullBackOff
Scheduling issues
Networking problems
Storage issues
The more broken environments you fix, the better prepared you’ll be.
This is probably the easiest way to lose points.
If a question is taking too much time:
Mark it mentally
Move on
Return later
A difficult question is not worth sacrificing multiple easier questions.
Collect points first.
Sometimes the solution isn’t difficult.
The challenge is understanding exactly what the question is asking.
Pay attention to:
Namespace requirements
Context switches
Resource names
Specific constraints
Reading carefully saves time later.
Never assume your solution works.
Always verify.
Check:
Pod status
Deployments
Services
Nodes
Network connectivity
Verification should become a habit.
The documentation is available.
But many candidates don’t practice using it.
Before the exam:
Learn how to search quickly
Bookmark common sections
Practice finding YAML examples
Documentation navigation is an exam skill by itself.
Hands-on labs are excellent.
But building your own Kubernetes cluster teaches different lessons.
My local Kubernetes environment helped me:
Experiment freely
Break things intentionally
Troubleshoot repeatedly
Reinforce concepts
The best learning often happens when things stop working.
The exam is not only a test of Kubernetes knowledge.
It’s also a test of prioritization.
My approach:
Scan all questions first
Solve easy questions immediately
Return to difficult tasks later
This strategy helped me maximize points.
This was the biggest lesson.
If your goal is only to pass the exam, you’ll likely forget much of the material afterward.
If your goal is to understand Kubernetes deeply, passing becomes a natural outcome.
The certification lasts for a few years.
The skills can benefit your career for decades.
The CKA exam challenged me not only technically but also mentally.
It taught me:
Problem solving
Troubleshooting
Prioritization
Documentation skills
Staying calm under pressure
If you’re currently preparing for CKA, remember:
Don’t chase shortcuts.
Build things.
Break things.
Fix things.
Repeat.
That’s where real Kubernetes learning happens.
And that’s what ultimately helped me pass the CKA exam and continue my journey toward becoming a Kubestronaut.
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Website: https://shahzadahmad.dev/
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