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

Deciding on the right Docker production setup

Because of the bewildering number of choices, picking the right path to deploy your application in production is daunting. You may need to weigh many factors, including the following:

  • Setup: How hard is it to go from local development to production?
  • Features: Deployment, testing, monitoring, alerting, and cost reporting.
  • Cost: Initial and ongoing monthly charges.
  • Support: Is support easily available either from vendors or from the community?
  • Elasticity: Can it scale out as the load increases, with automatic or manual controls?
  • Availability: Can the setup survive the loss of services, hosts, and networks?
  • Stickiness: How hard will it be to change the deployment strategy?

Running Docker on a single host is inexpensive and easy to set up but has poor scaling and availability characteristics. All the major cloud orchestration services that support Kubernetes are well-balanced in terms of features and...