CNCF / Administrator / CKA
Certified Kubernetes Administrator
Navigate a cluster, diagnose the failing layer and recover workloads with deliberate, verifiable commands.
Scope: CNCF v1.35 curriculum. Linux Foundation's candidate FAQ lists Kubernetes v1.35 on 10 October 2026; check again before booking. This is one of the five Kubestronaut certifications. Curriculum attribution: CNCF, CC BY 4.0; these explanations and questions are original.
THE REVISION PATH
Your topics, in order.
Read. Recall. Explain the alternative.
Cluster Lifecycle, RBAC and Extensions
API decides; controllers reconcile; nodes execute.
Workloads, Scheduling and Self-Healing
Requests place; limits constrain; probes decide.
Services, DNS and Network Policy
Selector finds endpoints; policy permits the path.
Volumes, Claims and Storage Classes
Claim requests; class provisions; policy reclaims.
Troubleshooting Under Time Pressure
Context first; events next; change one cause.
How this guide is organised
Original revision notes arranged around practical decisions. The linked official objectives define the mapped scope; primary documentation supports the explanations. Read each topic, answer without looking, then explain why another option would fail.
- Official exam guide ↗ Scope authority
- CNCF CKA certification ↗ Exam and training
- Kubernetes documentation ↗ Technical reference
Revision material supports preparation; it does not guarantee every possible exam question. Check the exam version and official objectives before booking.