Kubernetes Handbook - From Beginner to Expert

Kubernetes Handbook - From Beginner to Expert
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What's covered?

Table of Contents

01 - Introduction

  • What is Kubernetes?
  • Why use Kubernetes?
  • Containers vs. Orchestration
  • Declarative vs. Imperative Approaches
  • Kubernetes Architecture Overview

02 - Set-up Environment

  • Local Clusters (Minikube, Kind, Docker Desktop)
  • Production-Ready Self-Managed Clusters (kubeadm, kOps, Rancher)
  • Managed Kubernetes Services (AWS EKS, GCP GKE, Azure AKS)
  • Cost Considerations
  • When to Use What?

03 - Core Concepts in Action

  • Namespaces
  • Pods: The Smallest Deployable Unit
  • Deployments: Managing Stateless Workloads
  • Replica Management, Rolling Updates & Rollbacks
  • Services: ClusterIP, NodePort, LoadBalancer
  • ConfigMaps & Secrets

04 - Advanced Workloads and Patterns

  • StatefulSets: Managing Databases in Kubernetes
  • DaemonSets: Running Services on Every Node
  • Jobs & CronJobs: Scheduling Batch Processing
  • Operators & Custom Resource Definitions (CRDs)

05 - Networking Deep Dive

  • Container Network Interface (CNI) Plugins: Calico, Flannel, Cilium
  • Ingress Controllers: NGINX, Traefik
  • DNS & Service Discovery: CoreDNS
  • Hands-on Lab: Expose a Microservice via Ingress

06 - Storage Solutions

  • PersistentVolumes (PVs) & PersistentVolumeClaims (PVCs)
  • StorageClasses: AWS EBS, GCP PD, Azure Disk
  • Stateful Apps & VolumeClaimTemplates in StatefulSets
  • Avoiding Data Loss During Pod Rescheduling

07 - Troubleshooting and Error Handling

  • Common Errors & Fixes
  • ImagePullBackOff
  • CrashLoopBackOff
  • NetworkPluginNotReady
  • Debugging Tools
  • kubectl describe, kubectl logs, kubectl exec
  • Real-World Scenarios & Fixes
  • Service Endpoints Missing (Label Mismatch)
  • PersistentVolume Stuck in "Pending" (Storage Class Issues)

08 - Optimization & Cost Management

  • Resource Requests & Limits (Avoid CPU throttling & OOM Kills)
  • Horizontal Pod Autoscaler (HPA)
  • Cluster Autoscaler (CA)
  • Cost Saving Tips:
  • Spot Instances
  • Avoiding Overprovisioning
  • Cleanup Idle Resources
  • Kubecost & Cloud Cost Tools

09 - Kubernetes Gotchas and Anti-Patterns

  • Pod Disruption Budgets (PDBs): Avoiding Downtime
  • HostPath Volumes: Security Risks & Alternatives
  • Zombie Namespaces: Orphaned Resources Consuming Costs
  • Version Skew: Avoiding API Deprecation & Upgrades

10 - Kubernetes Security Best Practices

  • Role-Based Access Control (RBAC)
  • Pod Security Admission (PSA) (Replacing Pod Security Policies)
  • Network Policies: Isolating Namespace Communication
  • Image Security: Scanning & Securing Container Images

11 - Monitoring, Logging, and Observability

  • Prometheus & Grafana: Metrics & Alerts
  • EFK Stack (Elasticsearch, Fluentd, Kibana): Centralized Logging
  • Distributed Tracing with Jaeger & OpenTelemetry

12 - CI/CD Pipelines with Kubernetes

  • GitOps with Argo CD: Declarative Kubernetes Deployments
  • Jenkins Pipelines: Automating Build, Test & Deployments
  • Helm Charts: Managing Kubernetes Releases

13 - What Next You May Explore?

  • Serverless with Knative
  • Service Mesh with Istio
  • Edge Computing with K3s & MicroK8s

14 - GET SET GO

  • Final Thoughts
  • Continuous Learning & Community Engagement
  • What’s Next for You?
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