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)

Summary

For enterprise-scale distributed applications to be distinct in their operations and outputs, data is the most important instrument and ingredient. With IT containerization, the journey takes off in a brisk and bright fashion. IT as well as business software solutions are intelligently containerized through the smart leverage of the Docker Engine. However, the original instigation is the need for a faster and flawless realization of application-aware Docker containers, and hence, the data is tightly coupled with the application within the container. However, this closeness brings in some real risks. If the application collapses, then the data is also gone. Also, multiple applications might depend on the same data and hence, data has to be shared across.

In this chapter, we discussed the capabilities of the Docker Engine in facilitating the seamless data sharing between the Docker host and container as well...