Back to Kubernetes
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Phase 1
Foundations — The Control Plane & Reconciliation
Kubernetes is a set of control loops driving actual state toward declared state. Understand that one idea and most of the system stops feeling arbitrary.
1
Cluster Architecture: What Actually Runs a Pod
The control plane decides, the nodes execute. Learn who talks to whom, why the API server is the only component touching etcd, and where Docker fits.
kubernetescontrol-planeetcd
2
The Declarative Model and Reconciliation Loops
Why kubectl apply succeeding tells you almost nothing, how labels silently join everything together, and where to look when a valid manifest does nothing.
kubernetesdeclarativecontrollers
3
Pods, Init Containers and Native Sidecars
The smallest schedulable unit, why you almost never create one directly, and the sidecar support that became stable in v1.33 after years of workarounds.
kubernetespodsinit-containers