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

Preparing the host for Docker and Docker Compose

Before you configure the software on the host, you should ensure that it has a stable IP address. Sometimes these are referred to as static IP addresses, or Elastic IP addresses, in an AWS context. You may need to specially allocate these IP address through your provider, which can often be done through the provider's console, such as with the Network tab in AWS Lightsail, or the Elastic IPs settings in the AWS EC2 console.

Also, you should map an address (type A) record in a Domain Name System (DNS) zone that you control to the IP address so that your users can get to the application by using a short name, such as shipitclicker.example.com instead of a raw IP address, such as 192.2.0.10. All public cloud systems have the ability to manage DNS entries—for example, AWS Route 53 (https://docs.aws.amazon.com/route53/index.html), and most virtual hosting systems have this capacity as well.

Using operating system packages...