Theory · Kubernetes

22 min · Module 7 · Theory

How to study this topic

Read the theory below (concepts, bullets, and shell/YAML examples).
Try the Exam pool and Book quizzes in this module.
After each quiz, use Show answer on every question to review.

Kubernetes

K8s orchestrates containers across nodes. Declarative manifests describe desired state; controllers reconcile. Use Deployments for stateless apps, StatefulSets for stable identity, Jobs for batch work.

Probes: liveness (restart), readiness (traffic), startup (slow apps).
Resources: requests/limits for CPU and memory — avoid OOM kills.
RBAC: restrict who can apply manifests in each namespace.

Shell, YAML & config examples

kubectl apply -f deployment.yaml
kubectl get pods -l app=api
kubectl describe pod api-xxx
kubectl logs api-xxx -f
kubectl rollout status deployment/api

Hands-on practice: /lab/