The Certified Kubernetes Administrator (CKA) from the Linux Foundation and CNCF is a hands-on, performance-based exam. Instead of multiple-choice questions, you solve real tasks in live Kubernetes clusters from the command line. That makes it one of the most credible DevOps certifications.
Who should take the CKA?
- DevOps, platform and site reliability engineers
- Cloud engineers running Kubernetes workloads
- System administrators moving to container platforms
See how to become a DevOps engineer and how to become a site reliability engineer.
Exam format
The CKA is an online, proctored, performance-based exam lasting two hours. You work in a terminal with access to the official Kubernetes documentation. Registration typically includes a retake and access to a practice simulator.
Exam details such as price, length and question count change periodically — always confirm current information on the official certification page before you book.
Curriculum areas
- Cluster architecture, installation and configuration — kubeadm, RBAC, upgrades, etcd backup and restore
- Workloads and scheduling — Deployments, rolling updates, ConfigMaps, Secrets, resource limits and scheduling
- Services and networking — Services, Ingress/Gateway API, DNS and Network Policies
- Storage — PersistentVolumes, PersistentVolumeClaims and StorageClasses
- Troubleshooting — nodes, workloads, networking and cluster components (the largest area)
Speed is everything: kubectl tips
- Set a short alias for kubectl
- Use imperative commands with a client-side dry run to generate YAML quickly
- Use kubectl explain to look up fields
- Know where key pages live in the official documentation
- Switch contexts carefully — each question may use a different cluster
- Skip hard questions and return later
Hands-on practice plan
- Build a cluster with kubeadm on VMs
- Upgrade the cluster version
- Back up and restore etcd
- Create RBAC roles for a user and service account
- Deploy apps with ConfigMaps, Secrets and probes
- Configure Network Policies
- Create PVs/PVCs and mount them
- Break things deliberately and troubleshoot
Practice our Kubernetes interview questions alongside your labs.
A 6-week study plan
- Week 1: Core concepts and workloads
- Week 2: Scheduling, configuration and security (RBAC)
- Week 3: Networking and Services
- Week 4: Storage and cluster maintenance (upgrades, etcd)
- Week 5: Troubleshooting drills
- Week 6: Timed practice exams and simulators
After the CKA
Consider the CKAD (application developer), CKS (security specialist) or cloud-specific Kubernetes skills on EKS, AKS or GKE. Combine with Terraform Associate and cloud certifications for a strong DevOps profile.
Frequently asked questions
Is the CKA exam hard?
It is challenging because it is hands-on and timed, but consistent practice in real clusters makes it very achievable.
Can I use documentation during the CKA?
Yes, access to the official Kubernetes documentation is allowed during the exam.
CKA or CKAD — which should I take?
Choose CKA for administration and operations roles, and CKAD for developers deploying applications to Kubernetes.
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