Docker & Kubernetes for Developers & DevOps by CertifiKation.

Module 1: Introduction to Containers

• What are containers and why use them?
• Virtual Machines vs Containers
• Overview of containerization in modern DevOps
• Docker and Kubernetes ecosystem overview

Module 2: Getting Started with Docker

• Installing Docker (Windows/Linux/Mac)
• Docker architecture: Daemon, CLI, Images, Containers
• Basic Docker commands (run, ps, exec, stop, rm)
• Writing a Dockerfile
• Building and tagging Docker images
• Docker Hub: pushing and pulling images
• Volumes and bind mounts
• Docker Compose for multi-container apps

Module 3: Docker in Practice

• Dockerizing a sample Java/Spring Boot application
• Working with environment variables
• Health checks and container logs
• Networking in Docker (bridge, host, none)
• Best practices for Dockerfile and image optimization

Module 4: Introduction to Kubernetes (K8s)

• What is Kubernetes?
• Key components: Pod, Node, Cluster, Kubelet
• Architecture: Control Plane vs Worker Nodes
• Kubernetes vs Docker Swarm

Module 5: Deploying to Kubernetes

• Installing Minikube and kubectl
• Creating and managing Pods
• Deployments and ReplicaSets
• Exposing services (ClusterIP, NodePort, LoadBalancer)
• Rolling updates and rollbacks

Module 6: Configurations & Secrets

• ConfigMaps and Secrets
• Managing environment variables in K8s
• VolumeMounts and persistent storage (PVCs)
• Resource limits and requests

Module 7: Kubernetes in Real Projects

• Deploying a Spring Boot App to Kubernetes
• Helm introduction and usage
• Kubernetes YAML files: best practices
• CI/CD pipeline overview with Docker + K8s

Module 8: Monitoring & Logging

• Probes: Liveness and Readiness
• Introduction to Prometheus & Grafana (optional)
• Log management with EFK stack (Elasticsearch, Fluentd, Kibana)

Module 9: Advanced Kubernetes (Optional/Pro)

• Namespaces & RBAC (Role-Based Access Control)
• Auto-scaling with Horizontal Pod Autoscaler
• Service Mesh intro: Istio basics
• Kubernetes on cloud (GKE, EKS, AKS overview)

Capstone Project

Example Project: Deploying a Full Stack App on Kubernetes

• Multi-container app with backend (Spring Boot), frontend (React), and database
• Dockerizing each service
• Writing Helm charts
• Deploying to Minikube or Kubernetes cluster