How I passed the 5 CNCF certifications to become a Kubestronaut

Thu, 10 Jul 2025 09:00:00 -0500

I received the Kubestronaut title, and I wrote up how it went on Medium.

It started with a real project: migrating a telecom private cellular network from Docker Compose to Helm on Kubernetes without a complete Kubernetes background. The cluster did not behave as expected and I did not know which resources to create or how to structure a Helm chart. I turned that into a learning mission, and the certifications gave me a clear mental map of Kubernetes.

A few of the 20 recommendations from the article:

Do not follow anyone’s study method blindly. Each person learns differently.
Master the Linux command line. It saves time in the exam.
Use the Kubernetes documentation and CLI help. Many questions are inspired by them.
Build your own labs and use mock exams, and work on real projects alongside the study.
Failing once or twice is fine. Reflect, study and retake it.
Teach what you have learned, because it reinforces your knowledge.

Read the full article on Medium. You can verify the credentials on Credly and in the CNCF Kubestronaut directory.

Kubernetes on Luis Felipe Ariza Vesga

How I passed the 5 CNCF certifications to become a Kubestronaut