Docker & Kubernetes

Master containerization and orchestration — 65 topics across 15 chapters covering Docker internals, Kubernetes architecture, networking, and production deployments.

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65

Topics

15

Chapters

20h

Est. Time

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1

Containers & Virtualization Fundamentals

4 topics

0% done

1Virtual Machines vs Containers — What's the Real Difference?2Linux Namespaces and cgroups — How Containers Actually Work 3Container Runtimes — Docker, containerd, CRI-O 4When to Use Containers (and when NOT to)

2

Docker Architecture & Internals

5 topics

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1Docker Architecture — Client, Daemon, Registry 2Docker Images and Layers — The Union File System 3Docker Hub and Image Registries — Public vs Private 4The Docker Build Cache — How It Works and How to Use It 5Docker Image Security — Scanning and Minimizing Attack Surface

3

Building Docker Images

5 topics

0% done

1Writing Your First Dockerfile — Every Instruction Explained 2Multi-Stage Builds — Smaller, Faster, Safer Images 3Dockerfile Best Practices — Layer Ordering, .dockerignore, Non-Root Users 4Building Images for Different Architectures (ARM vs x86)5Distroless and Scratch Images — Minimal Containers for Production

4

Docker Networking

4 topics

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1Docker Networking Overview — Bridge, Host, None, Overlay 2Container-to-Container Communication — Same Host 3Container DNS and Service Discovery in Docker 4Exposing Containers to the Outside World — Port Mapping and Reverse Proxies

5

Docker Volumes & Storage

3 topics

0% done

1Docker Volumes vs Bind Mounts vs tmpfs — When to Use Each 2Persistent Data with Named Volumes 3Volume Drivers — Sharing Storage Across Hosts

6

Docker Compose — Multi-Container Apps

4 topics

0% done

1What is Docker Compose and When to Use It 2Writing a docker-compose.yml — Every Field Explained 3Networking Between Services in Docker Compose 4Docker Compose in CI/CD — Testing Multi-Service Apps Locally

7

Kubernetes Architecture

6 topics

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1Why Kubernetes Exists — The Container Orchestration Problem 2The Control Plane — API Server, etcd, Scheduler, Controller Manager 3Worker Nodes — kubelet, kube-proxy, Container Runtime 4kubectl — Your Primary Interface to the Cluster 5Kubernetes Objects and the Declarative Model 6How Kubernetes Reconciliation Works — The Control Loop

8

Kubernetes Workloads

5 topics

0% done

1Pods — The Smallest Deployable Unit 2ReplicaSets — Keeping Pods Running 3Deployments — Rolling Updates and Rollbacks 4StatefulSets — Running Stateful Applications 5DaemonSets and Jobs — Node-Level Tasks and One-Off Work

9

Kubernetes Networking & Services

5 topics

0% done

1Kubernetes Networking Model — The Flat Network 2Services — ClusterIP, NodePort, LoadBalancer 3Ingress — HTTP Routing and TLS Termination 4Network Policies — Firewalling Traffic Between Pods 5Service Mesh — Istio and Linkerd Overview

10

Kubernetes Configuration & Secrets

4 topics

0% done

1ConfigMaps — Externalizing Application Configuration 2Secrets — Storing Sensitive Data Safely 3Environment Variables vs Volume Mounts — Which to Use 4External Secrets — Vault, AWS SSM, and External Secrets Operator

11

Kubernetes Storage

3 topics

0% done

1Persistent Volumes and Persistent Volume Claims 2Storage Classes and Dynamic Provisioning 3Running Databases on Kubernetes — Trade-offs and Patterns

12

Autoscaling & Resource Management

4 topics

0% done

1Resource Requests and Limits — CPU and Memory 2Horizontal Pod Autoscaler (HPA) — Scaling on Metrics 3Vertical Pod Autoscaler (VPA) — Right-Sizing Pods 4Cluster Autoscaler — Adding and Removing Nodes

13

RBAC & Security

4 topics

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1RBAC — Roles, ClusterRoles, Bindings 2Service Accounts — Identity for Pods 3Pod Security Standards — Restricting What Pods Can Do 4Image Pull Secrets and Registry Authentication

14

Monitoring, Logging & Observability

4 topics

0% done

1Monitoring Kubernetes with Prometheus and Grafana 2Log Aggregation — Fluentd, Loki, and the ELK Stack 3Distributed Tracing with Jaeger and OpenTelemetry 4Alerting — Building Meaningful Alerts, Not Noise

15

CI/CD, GitOps & Production Clusters

5 topics

0% done

1Building a CI/CD Pipeline for Kubernetes — GitHub Actions 2GitOps with ArgoCD — Declarative Deployments 3Helm — Kubernetes Package Manager 4Multi-Environment Clusters — Dev, Staging, Production 5Production Cluster Checklist — What You Must Have Before Going Live