I set up Copilot instructions on a CDK project and went looking for confirmation that the structure actually matched GitHub’s model, rather than carrying over an assumption from Claude Code. Claude Code works by walking the directory tree and picking up any CLAUDE.md it finds in the current or parent folder - drop a file next to the code it should govern, and Claude finds it. Copilot has no equivalent “drop a file in the folder” convention. It centralises everything under .github/ instead, and scopes by path through frontmatter rather than by file location. ...

I set up Claude Code on this blog’s own repo - a root CLAUDE.md, a .claude/rules/ directory, skills under .claude/skills/ - and ended up cross-referencing it against the equivalent GitHub Copilot setup I’d built on a CDK project. Copilot centralises everything under .github/ and scopes by path through frontmatter. Claude Code works the opposite way: it walks the directory tree from wherever you launch it, loading any CLAUDE.md it finds along the way. ...

I sat the Kubernetes and Cloud Native Associate (KCNA) and passed. KCNA is the entry-level CNCF certification - it covers Kubernetes fundamentals and the wider cloud native landscape at a conceptual level, and it is the natural first step before the hands-on CKA, CKAD, and CKS exams. It is a multiple-choice exam, so it rewards knowing what the pieces are and how they relate, not hands-on kubectl skill. If you already work with Kubernetes, a lot of this will be familiar, so calibrate the prep to what you already know. ...

This is Chapter 2 of the Kubernetes Fundamentals series. Installing kubectl Install kubectl before a local cluster tool like minikube - minikube depends on it being present. kubectl reference kubectl Quick Reference Install kubectl - official install steps per OS Confirm kubectl can reach the cluster: kubectl cluster-info List the nodes in it: kubectl get nodes Check a node’s details - capacity, conditions, and what’s running on it: kubectl describe nodes Output formatting kubectl [command] [TYPE] [NAME] -o <format> controls how a command’s output is rendered: ...

This is Chapter 1 of the Kubernetes Fundamentals series. Nodes and clusters A node (sometimes called a minion) is a worker machine in Kubernetes - a collection of Pods runs on it. Multiple nodes together form a cluster. One node in that cluster is the master node - it watches over the worker nodes, orchestrates containers across them, and is where Kubernetes itself is installed. The five components Installing Kubernetes means installing five components. A mnemonic worth keeping: Api-server, Etcd, Kubelet, Controller, Scheduler: ...