Kubernetes — From Zero to Hero

Kubernetes is a declarative container orchestrator: you describe the state you want — how many replicas, which image, which ports are exposed — and a set of control loops continuously drives the cluster’s actual state toward it. This course is written for developers — people who ship workloads to a cluster, debug why a Pod won’t come up, and have to make Kubernetes behave correctly in production.

Every manifest in this course uses the stable API groups you’ll meet in real clusters — apps/v1 for Deployments/StatefulSets/DaemonSets, batch/v1 for Jobs/CronJobs, networking.k8s.io/v1 for Ingress/NetworkPolicy, autoscaling/v2 for the HorizontalPodAutoscaler, and policy/v1 for PodDisruptionBudgets. kubectl and YAML are the same regardless of language, so every CLI and manifest example is language-agnostic; the few lessons with a programmatic API client use TypeScript with @kubernetes/client-node, the official JavaScript client.

What this course covers

Module	You will learn
Foundations & Architecture	Why orchestration, the control plane and node components, kubectl, declarative YAML, running a local cluster
Workloads	Pods, Deployments and rolling updates, StatefulSets and DaemonSets, Jobs and CronJobs
Networking	Services and kube-proxy, cluster DNS, Ingress and the Gateway API, NetworkPolicy
Storage & Configuration	Volumes, PersistentVolumes/Claims and StorageClasses, ConfigMaps and Secrets, namespaces and quotas
Scheduling & Scaling	Requests/limits and the scheduler, affinity/taints/tolerations, the HorizontalPodAutoscaler, disruption budgets
Observability & Security	Probes, logs and metrics, RBAC and ServiceAccounts, Pod Security Standards
Production & Ecosystem	Helm, Operators and CRDs, GitOps, and a production checklist with the API client

How to read it

Each lesson opens with the idea in one sentence, shows real kubectl commands and YAML manifests, has a diagram of the moving parts, and ends with a one-line takeaway plus a short quiz. Work top to bottom — later modules assume the Pod, control-loop, and label/selector vocabulary from these first lessons.

☸️ The one-line takeaway

Kubernetes is a declarative, self-healing orchestrator: you describe desired state in YAML, and control loops continuously reconcile the cluster toward it. This course teaches Kubernetes from a developer’s seat — the objects, the guarantees, and the production behavior — starting from the control plane itself.