Book Image

Learning Docker - Second Edition

By : Vinod Singh, Pethuru Raj, Jeeva S. Chelladhurai
Book Image

Learning Docker - Second Edition

By: Vinod Singh, Pethuru Raj, Jeeva S. Chelladhurai

Overview of this book

Docker is an open source containerization engine that offers a simple and faster way for developing and running software. Docker containers wrap software in a complete filesystem that contains everything it needs to run, enabling any application to be run anywhere – this flexibily and portabily means that you can run apps in the cloud, on virtual machines, or on dedicated servers. This book will give you a tour of the new features of Docker and help you get started with Docker by building and deploying a simple application. It will walk you through the commands required to manage Docker images and containers. You’ll be shown how to download new images, run containers, list the containers running on the Docker host, and kill them. You’ll learn how to leverage Docker’s volumes feature to share data between the Docker host and its containers – this data management feature is also useful for persistent data. This book also covers how to orchestrate containers using Docker compose, debug containers, and secure containers using the AppArmor and SELinux security modules.
Table of Contents (13 chapters)

Debugging Containers

Debugging has been an artistic component in the field of software engineering. All kinds of software building blocks individually, as well as collectively, need to go through a stream of deeper and decisive investigations by software development and testing professionals to ensure the security and safety of the resulting software applications. As Docker containers are said to be key runtime environments for next generation mission-critical software workloads, it is pertinent and paramount for containers, crafters, and composers to embark on a systematic and sagacious verification and validation of containers.

This chapter has been dedicatedly written to enable technical guys who have all the accurate and relevant information to meticulously debug both the applications running inside containers and the containers themselves. In this chapter, we will also look at the theoretical aspects of process...