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Learn Kubernetes

Understand how containers are deployed, scaled and healed in production.

Free to start. Built from a single prompt. No credit card.

Kubernetes, often shortened to K8s, is an open-source system for running containers across a cluster of machines. Originally designed at Google and now maintained under the Cloud Native Computing Foundation, it handles scheduling containers onto nodes, restarting failed ones, scaling replicas and routing traffic. You describe the desired state in YAML manifests, such as a Deployment with three replicas, and Kubernetes works continuously to match it. The vocabulary is large, so beginners learn pods, deployments and services first. Learnr builds a personalized Kubernetes course from your prompt and teaches it through short, interactive lessons.

How to learn Kubernetes, step by step

Make sure your Docker basics are solid. Kubernetes runs container images, so you should be able to build an image, run it, map ports and read its logs. Without this, Kubernetes errors are very hard to interpret.
Run a local cluster. Install kubectl and a local cluster tool such as minikube, kind or the Kubernetes option in Docker Desktop. A cluster on your laptop lets you experiment freely without a cloud bill.
Deploy an app with declarative YAML. Write a Deployment manifest for a simple web image and apply it with kubectl apply -f. Delete a pod and watch the Deployment replace it, which shows the desired-state model in action.
Expose it with a Service. Create ClusterIP and NodePort Services and learn how labels and selectors connect them to pods. Use kubectl port-forward to reach the app, then add an Ingress controller for HTTP routing.
Add configuration and health checks. Move settings into ConfigMaps and Secrets, set CPU and memory requests and limits, and add readiness and liveness probes. Trigger a failing probe on purpose to see how Kubernetes reacts.
Practice debugging daily. Use kubectl get, describe, logs and events to diagnose broken deployments like a wrong image tag or a CrashLoopBackOff. Short Learnr lessons help retain the many object types and fields.

What you'll learn

Explain the control plane, nodes, pods and the desired-state model
Deploy and scale apps with Deployments and ReplicaSets
Expose workloads with Services and Ingress
Configure apps with ConfigMaps, Secrets and resource limits
Inspect and debug a cluster with kubectl

What's inside your Kubernetes course

A sample path Learnr builds for Kubernetes. Your real course adapts to your goal and level.

1. Why container orchestration exists
2. Cluster architecture and kubectl basics
3. Pods, Deployments and rolling updates
4. Services, Ingress and networking
5. Configuration, storage and namespaces
6. Health checks, debugging and Helm

How long does it take to learn Kubernetes?

With Docker experience, core concepts and deploying a simple app take about 3 to 6 weeks at 5 hours a week. Operating clusters confidently, with networking, storage, security and troubleshooting, usually takes 3 to 6 months or more of hands-on practice.

What you need before you start

Docker and containers, comfortable Linux command-line use, YAML syntax and basic networking concepts like ports, DNS and load balancing.

Common mistakes to avoid

Learning Kubernetes before Docker. Get comfortable building and running containers first, or every error will be twice as confusing.
Creating resources with imperative commands only. Write YAML manifests and keep them in Git so your cluster state is reproducible.
Skipping resource requests, limits and probes. Without them, pods get scheduled poorly, crash silently or receive traffic before they are ready.

How Learnr builds your course

Type your topic

Tell Learnr you want to learn Kubernetes, or get as specific as you like.

Get a personalized course

Learnr instantly builds a full Kubernetes course tailored to your goal and skill level.

Learn and level up

Move through bite-sized lessons and interactive practice, earning XP and keeping your streak.

Kubernetes questions, answered

Why is Kubernetes called K8s?

It is a numeronym: K, then the eight letters ubernete, then s. People use it as a shorthand in writing and conversation.

Do I need Kubernetes for small projects?

Usually not. A single server, Docker Compose or a managed platform is often simpler. Kubernetes earns its complexity when you run many services that need scaling and self-healing.

Is there a Kubernetes certification?

Yes. The Cloud Native Computing Foundation offers certifications such as the Certified Kubernetes Administrator and Certified Kubernetes Application Developer, both hands-on exams in a live cluster.