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)

Orchestration of containers

The pioneering concept of orchestration in the IT domain has been there for a long time now. For instance, in the Service Computing (SC) arena, the idea of service orchestration has been thriving in an unprecedented manner in order to produce and sustain highly robust and resilient services. Discrete or atomic services do not serve any substantial purpose unless they are composed together in a particular sequence to derive process-aware composite services. As orchestrated services are more strategically advantageous for businesses in expressing and exposing their unique capabilities in the form of identifiable/discoverable, interoperable, usable, and composable services to the outside world, corporates are showing exemplary interest in having an easily searchable repository of services (atomic as well as composite). This repository, in turn, enables businesses in realizing large-scale...