What Is Kubernetes?

Containers need a conductor

Kubernetes (K8s) schedules containers across machines, restarts failed ones, and exposes them on a network. You declare the desired state; the control plane works to match it.

Why teams use it

• Run many replicas of an app for capacity and resilience
• Roll out new versions with controlled replacements
• Attach storage, configuration, and secrets in a standard way
• Speak one API across clouds and on-prem clusters

What this course covers

Local-friendly concepts with kubectl: pods, Deployments, Services, namespaces, config, volumes, logs, scaling, and applying YAML. We skip deep cluster administration.

Mental model

You rarely babysit individual containers. You describe workloads; Kubernetes places and heals them.

# Later you will run commands like:
kubectl get pods
kubectl apply -f app.yaml