How I Passed the CKA Exam With 93% on My First Attempt
The resources, practice routine, and exam tips that helped me prepare for the CKA and pass with a high score.
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Hello, I'm Chopper.
I'm a software developer in Bangkok. I write notes on kernels, networking, containers, and Kubernetes—how things work under the hood, in plain language. This site is mostly for Future Me; if it helps you too, even better.
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# latest posts
Kubernetes Cluster Version Upgrade
Step-by-step guide to upgrade Kubernetes clusters using kubeadm in Linux environments.
DNS (Domain Name System)
Hierarchical DNS, name resolution flow, recursive resolver, root and TLD servers, authoritative DNS, caching, and TTL.