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

Technical requirements

You will need to have both a local Kubernetes learning environment and a working Kubernetes cluster in the cloud, as set up in Chapter 8, Deploying Docker Apps to Kubernetes. You will also need to have a current version of the AWS CLI, as well as kubectl and helm 3.x installed on your local workstation, as described in the previous chapter. The Helm commands in this chapter use helm 3.x syntax.

For your local Kubernetes learning environment, you should have a working NGINX Ingress Controller configured, which you can install by running the chapter11/bin/deploy-nginx-ingress.sh script. You should also have a local Jaeger operator, which you can install by running the chapter11/bin/deploy-jaeger.sh script.

For the cloud-hosted cluster, you can reuse the AWS Elastic Kubernetes Service (EKS) cluster or set up a new one for this chapter using the same method or using eksctl. The EKS cluster must have a working ALB Ingress Controller set up. You should also...