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How to prepare well for official Kubernetes certifications (CKA, CKAD, CKS)

We will teach you how to obtain certified Kubernetes certifications such as Certified Kubernetes Administrator (CKA), Kubernetes Certified Application Developer (CKAD), and Certified Kubernetes Security Specialist (CKS).

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[Info] New Kubernetes exam automatic recertification (Obtaining CKS now renews CKA as well)

Hello

Recently, the certification renewal process has changed so that obtaining the CKS now renews your CKA.

I believe some clarification is needed regarding this matter, so I have organized the details and am providing a general announcement.

https://www.cncf.io/blog/2026/06/17/expanding-care-passing-cks-can-now-extend-your-cka-certification/


Q: Upon passing CKS?

A: CKA is also automatically extended; when you obtain or renew the CKS (Security), the expiration date of your CKA (Administrator) certification will be extended to match the CKS.


Q: Does this not apply if the existing CKA has already expired?

A: No. You can take the CKS exam immediately without having to retake the CKA, and upon passing, even your expired CKA will be extended as a set.


Q: Can I still benefit from this even if I have never obtained a CKA?

A: No. You must have obtained the CKA at least once. As before, you must first obtain the CKA to be eligible to take the CKS exam.


Q: Will the existing CARE (Certification Advancement & Recertification Experience) be maintained?

A: Yes, it remains the case that obtaining CKS will also certify you for KCSA, and certifying for CKA or CKAD will certify you for KCNA. Therefore, if you were previously a "Kubestronaut" (i.e., if you held all 5 certifications)

You can re-acquire the "Kubestronaut" certification by re-certifying only two (CKS, CKAD) as follows.

CKS Exam/Renewal
   ├─→ CKS   (Self)
   ├─→ CKA   (New rule, June 18th~)
   └─→ KCSA  (Existing rule)

CKAD Exam/Renewal
   ├─→ CKAD  (Self)
   └─→ KCNA  (Existing rule)

[Figure 1] This means that even in this state, you only need to update CKS and CKAD to renew your "Kubestronaut" status.

image.png

I will be back with more helpful content.
Thank you.

(+ If anyone is coming to AppWorld Seoul on Wednesday, I'll see you then!)

Best regards, Hoon Jo.

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