Book Image

Docker for Developers

By : Richard Bullington-McGuire, Andrew K. Dennis, Michael Schwartz
2 (1)
Book Image

Docker for Developers

2 (1)
By: Richard Bullington-McGuire, Andrew K. Dennis, Michael Schwartz

Overview of this book

Docker is the de facto standard for containerizing apps, and with an increasing number of software projects migrating to containers, it is crucial for engineers and DevOps teams to understand how to build, deploy, and secure Docker environments effectively. Docker for Developers will help you understand Docker containers from scratch while taking you through best practices and showing you how to address security concerns. Starting with an introduction to Docker, you’ll learn how to use containers and VirtualBox for development. You’ll explore how containers work and develop projects within them after you’ve explored different ways to deploy and run containers. The book will also show you how to use Docker containers in production in both single-host set-ups and in clusters and deploy them using Jenkins, Kubernetes, and Spinnaker. As you advance, you’ll get to grips with monitoring, securing, and scaling Docker using tools such as Prometheus and Grafana. Later, you’ll be able to deploy Docker containers to a variety of environments, including the cloud-native Amazon Elastic Kubernetes Service (Amazon EKS), before finally delving into Docker security concepts and best practices. By the end of the Docker book, you’ll be able to not only work in a container-driven environment confidently but also use Docker for both new and existing projects.
Table of Contents (21 chapters)
1
Section 1: An Introduction to Docker – Containers and Local Development
6
Section 2: Running Docker in Production
14
Section 3: Docker Security – Securing Your Containers

Selecting a host and operating system for single-host deployment

Deploying your application on a single host is the simplest possible way to run an application in production. In many ways, it resembles the user experience of performing local development using Docker and Docker Compose. If you can package the parts of your application using a docker-compose.yml file, you are already 70 percent of the way there. If you already have basic UNIX or Linux system administration skills, this will be very easy—this strategy requires the least effort and you can master the essentials in an hour or two.

Requirements for single-host deployment

In order to proceed with deployment, you will need a computer running a modern Linux operating system of the same architecture as your development system, with enough memory and processor and storage capacity to run your application. If you are developing on a Windows 10 64-bit desktop using Docker Community Edition, you need a Linux system...