K8S Certifications - Exam Cram
- 2. © 2020 StackRox. All Rights Reserved. The CKS exam structure is... ● 2 hours long ● Require a passing score of 67% ● 15-20 performance-based tasks ● Uses Kubernetes version 1.20 ● Cost $300 USD ● Free exam retake ● Certification valid for two years ● 12-month exam eligibility ● A valid CKA certificate is required
- 3. Exam Format
- 4. © 2020 StackRox. All Rights Reserved. ● Each task on this exam must be completed using a designated cluster/configuration context. ● Sixteen clusters comprise the exam environment, one for each task. Each cluster is made up of one master node and one worker node. ● At the start of each task, an infobox provides you with the cluster name/context and the master and worker node’s hostname.
- 5. © 2020 StackRox. All Rights Reserved. ● You can switch the cluster/configuration context using a command such as the following: kubectl config use-context <cluster/context name> ● Nodes making up each cluster can be reached via ssh, using a command such as the following: ssh <nodename> ● You have elevated privileges on any node by default, so there is no need to assume elevated privileges.
- 6. © 2020 StackRox. All Rights Reserved. ● You must return to the base node (hostname CLI) after completing each task. ● Nested−ssh is not supported. ● You can use kubectl and the appropriate context to work on any cluster from the base node.When connected to a cluster member via ssh, you will only work on that cluster via kubectl.
- 7. © 2020 StackRox. All Rights Reserved. ● Further instructions for connecting to cluster nodes will be provided in the appropriate tasks. ● The CKS environment is currently running Kubernetes v1.20. (Quarterly exam updates are planned to match future Kubernetes releases). ● Vi/Vim is the default editor during the exam. If you require Gedit, Emacs or Nano it will have to be installed in each node you work on.
- 8. GeneralTips
- 9. © 2020 StackRox. All Rights Reserved. ● Always review the Linux Foundations documentation. For frequently asked questions and any updates to the exam structure. ● Read each question carefully and manage the time accordingly. ● Bookmark and use any resources form the given domains and their respective subdomains
- 10. © 2020 StackRox. All Rights Reserved. ● Recording task progression will help to prioritize where to spend the final moments during the exam. ● Since time is of the essence, take advantage of the kubectl cheat sheet, and use aliases to cut down on kubectl typos. ● Be proficient in vi/vim for file editing during the test. Luckily, the spacing is preformatted forYAML files. ● Pay attention to the question context.
- 11. © 2020 StackRox. All Rights Reserved. ● Never write aYAML file from scratch. ● Learn how to sort through JSON outputs. ● The exam will use kubeadm for creating the Kubernetes Cluster. Review the systemd basics, and review where the cluster configuration yaml files are located. ● When using ssh, ensure that you ‘exit’ from the node to the ‘central node.’