About this book:

This book provides a comprehensive, hands-on guide to building and deploying containerized web applications using Docker and Kubernetes. It starts by demystifying containerization, covering Docker fundamentals like images, containers, and registries, and progresses to best practices for creating secure, lightweight Docker images and managing multi-container local environments with Docker Compose. Readers will gain a solid foundation in packaging applications for modern cloud environments.

The journey then moves into the world of Kubernetes, explaining the necessity of orchestration and delving into core concepts like Pods, Deployments, ReplicaSets, Services, and their intricate networking. The book explores critical operational aspects such as managing configuration with ConfigMaps and Secrets, implementing persistent storage with PVs and PVCs, and deploying web applications using various strategies like rolling, blue/green, and canary updates. Essential for production, it covers advanced topics including autoscaling with HPA, VPA, and Cluster Autoscaler, sophisticated traffic routing with Ingress Controllers, and integrating robust monitoring, logging, and tracing solutions for comprehensive observability.

Beyond deployment, the book addresses the vital challenges of security hardening for both containers and Kubernetes clusters, detailing practices like Network Policies, RBAC, and image scanning. It guides readers through integrating CI/CD pipelines for automated container delivery, simplifying complex deployments with Helm, and enhancing microservice communication and resilience with service meshes. Finally, it offers practical advice on troubleshooting real-world cluster deployments, managing upgrades and migrations, and optimizing cloud costs to ensure web applications are not only resilient and scalable but also efficient and secure in the dynamic cloud-native landscape.

What You'll Find Inside:

• Master Docker fundamentals, including images, containers, and registries, to package web applications efficiently for consistent deployment.
• Learn to deploy and manage multi-container applications using Docker Compose for local development and testing, ensuring environment consistency.
• Gain expertise in Kubernetes core concepts like Pods, Deployments, Services, ConfigMaps, and Secrets for orchestrating, scaling, and securing cloud applications.
• Explore advanced deployment strategies (Rolling, Blue/Green, Canary) and autoscaling techniques (HPA, VPA, Cluster Autoscaler) to achieve zero-downtime updates and elastic resource management.
• Understand and implement robust observability (metrics, logs, traces) and security hardening (Network Policies, RBAC, image scanning) for resilient and cost-efficient cloud-native web applications.

Who's It For:

This book is for developers, DevOps practitioners, and architects who want to build, deploy, and manage modern web applications in cloud environments. It's ideal for those seeking practical, hands-on guidance to leverage Docker for containerization and Kubernetes for robust orchestration, scaling, and security.