Learn KUBERNETES-YAML with Real Code Examples
Updated Nov 27, 2025
Practical Examples
Deploy Nginx web server
Deploy a Python Flask app with PostgreSQL
Configure ConfigMaps and Secrets for app configuration
Set up Horizontal Pod Autoscaler
Use PersistentVolumeClaims for stateful apps
Troubleshooting
Check pod logs with kubectl logs
Inspect events with kubectl get events
Describe resources with kubectl describe
Verify node status with kubectl get nodes
Ensure YAML indentation and syntax correctness
Testing Guide
Validate manifests with kubectl apply --dry-run
Test pod readiness and liveness probes
Use kubectl exec to debug container issues
Simulate scaling scenarios
Check events and logs for error messages
Deployment Options
kubectl apply for manual deployment
Helm charts for templated deployments
Kustomize overlays for environment-specific configs
GitOps workflows with ArgoCD or Flux
Operator-based deployments for complex apps
Tools Ecosystem
kubectl CLI
Helm package manager
Kustomize for YAML templating
Prometheus/Grafana for monitoring
Lens or K9s for cluster visualization
Integrations
Cloud providers (AWS EKS, GCP GKE, Azure AKS)
CI/CD pipelines (Jenkins, GitLab CI, ArgoCD)
Service meshes (Istio, Linkerd)
Logging (ELK stack, Fluentd)
Monitoring (Prometheus, Grafana, Metrics Server)
Productivity Tips
Use Helm charts for reusable deployments
Templatize manifests with Kustomize
Automate CI/CD with GitOps workflows
Leverage namespaces for environment separation
Monitor clusters proactively for performance and health
Challenges
Managing complex YAML manifests
Debugging networking and ingress issues
Scaling large clusters effectively
Ensuring secure multi-tenant deployments
Monitoring and logging at scale