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How to Prepare for CKA Exam
- 1. How to Prepare for CKA Exam? Alfie Chen 2018/02/10
- 2. Solution Architect @ inwinSTACK Host of Train.IO (https://www.youtube.com/c/inwinSTACK) Alfie Chen alfie.c@inwinstack.com alfieYFC alfie.yfc
- 3. Why CKA? • Required for KCSP • Proof of intermediate K8Ser • Separate milestone from CKAD
- 4. Things to Know Prior… • Offered by CNCF • $300 (1 free retake within a year) • Online-base with a proctor • Reservation 1~3 days prior exam • Command line ONLY • Currently v1.9.1 • 3~4hrs (request breaks to proctor) • Run the Compatibility Check!! https://www.examslocal.com/ScheduleExam/Home/CompatibilityCheck
- 5. Exam Requirements • Chrome browser • Reliable internet access • Webcam • Microphone • Empty room • Clean surface • No food & drinks (including water)
- 6. Exam Panel Terminal > Content Panel • Instructions • Problem Statement • Problem Navigation • Hints/Tips Toolbar/Menu (Chat, Notebook, etc.)
- 7. Exam Panel Terminal > Content Panel • Instructions • Problem Statement • Problem Navigation • Hints/Tips Toolbar/Menu (Chat, Notebook, etc.) Notebook Pop-up
- 8. Exam Curriculum • Application Lifecycle Management 8% • Installation, Configuration & Validation 12% • Core Concepts 19% • Networking 11% • Scheduling 5% • Security 12% • Cluster Maintenance 11% • Logging / Monitoring 5% • Storage 7% • Troubleshooting 10% https://github.com/cncf/curriculum/blob /master/certified_kubernetes_administra tor_exam_v1.9.0.pdf
- 9. K8S Clusters in Exam (back when I took CKA v1.6) Cluster Name Members Description k8s 1 etcd, 1 master, 2 worker Hk8s 3 etcd, 3 master, 1 load-balancer, 2 worker HA K8S Cluster bk8s 1 etcd, 1 master, 1 worker wk8s 1 etcd, 1 master, 2 worker ek8s 1 etcd, 1 master, 2 worker fk8s 1 etcd, 1 machine Non-Cluster ik8s 1 etcd, 1 master, 1 machine Missing worker tk8s 1 etcd, 1 master, 1 node kubectl config use-context <cluster-name>
- 10. K8S Clusters in Exam Cluster Name Members Description k8s 1 etcd, 1 master, 2 worker hk8s 1 etcd, 1 master, 2 worker calico bk8s 1 etcd, 1 master, 1 worker wk8s 1 etcd, 1 master, 2 worker ek8s 1 etcd, 1 master, 2 worker ik8s 1 etcd, 1 master, 1 machine Missing worker kubectl config use-context <cluster-name>
- 11. What else should I know? • Read the Manual!!! https://www.cncf.io/certification/candidate-handbook
- 12. How to Prepare? • Practice Linux CLI (Ubuntu 16) • Practice kubectl commands • Minikube (https://github.com/kubernetes/minikube) • inwinstack/kube-ansible (https://github.com/inwinstack/kube-ansible) • Get familiar with kubernetes.io documentations • Get familiar with kubernetes.io yaml examples • Get familiar with kubernetes.io API references
- 13. How to Prepare? • Get familiar with kubernetes.io documentations (https://kubernetes.io/docs/home/?path=users&persona=app- developer&level=foundational)
- 14. How to Prepare? • Get familiar with kubernetes.io yaml examples Here’s my advice: DON’T JUST COPY&PASTE!! Type your own and play around with it.
- 15. How to Prepare? • Get familiar with kubernetes.io API references (https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.9/) It’s ugly It’s dirty It’s really annoying But we all desperately need it…
- 16. How to Prepare? Knowing K8S infrastructure is a PLUS+ • Kubernetes the Hard Way - Kelsey Hightower https://github.com/kelseyhightower/kubernetes-the-hard-way • Kubernetes v1.8.x – Kyle Bai https://kairen.github.io/2017/10/27/kubernetes/deploy/manual-v1.8/
- 17. How to Prepare? • Online course – Kubernetes Fundamentals https://training.linuxfoundation.org/linux-courses/system-administration- training/kubernetes-fundamentals • Training courses from inwinSTACK (TBD)
- 18. FREE Learning Materials! • Free online course – Introduction to Kubernetes https://www.edx.org/course/introduction-kubernetes-linuxfoundationx- lfs158x#! • YouTube is full of free contents! 1. KubeCon + CloudNativeCon 2017 – Austin (CNCF) 2. TGI Kubernetes (Heptio) 3. Kubernetes Webinar (Janakiram & Associates) 4. Train.IO (inwinSTACK)