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On 25-Sept-2021 I earned my CKS certification.

Overview#

The curriculum assessed covers the following, with weighting of each topic

Weight %Topic
10%Cluster Setup
15%Cluster Hardening
15%System Hardening
20%Minimize Microservice Vulnerabilities
20%Supply Chain Security
20%Monitoring, Logging and Runtime Security

You can find a copy of the CKSCurriculum v1.21.

Courses#

My main study material was Kubernetes CKS 2021 Complete Course by Kim Wüstkamp. Very good course and I would recommend it to get a good grasp of the topics for examination.

At the end of the course I signed up for my CKS exam where you get 2 x killer.sh simulators included in the CKS exam purchase. I completed both of these.

Unfortunately, the simulators weren't enough preparation for my first take of the exam and I failed with a 60, where a 67 was required to pass. The exam is 2 hours for 16 questions and I took too long trying to decipher the questions and then fumbling the commands.

For my retake I was determined to drill more exam scenrios so I purchased a subscription to kodekloud and drilled their 3 x available CKS mock exams, which helped familiarize myself with exam scenario questions, the terminal setup and speed and accuracy of my CLI commands.

Notes#

My notes from Kim's course are oraganised below in their respective sections according the the CKS curriculum table.