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

Running your own Kubernetes cluster – from bare metal to OpenStack

If you must run your application on-premises, in a data center, or if you have the need to run across multiple cloud computing providers, you may need to run your own Kubernetes cluster. Once you learn more about the benefits and drawbacks of running Docker and Kubernetes either on-premises or in a hybrid cloud, you should be able to know when it is an appropriate solution. While these scenarios are more complex than using one of the managed services, they can provide different benefits, listed as follows:

  • Upgrading cluster software (or not) on your own schedule, with full control of what versions you run today and tomorrow. Cloud vendors may lag in what versions are supported, or deprecate versions in ways that can impose operational risk.
  • Using one of the many mature Kubernetes provisioning solutions, such as Kops, that  facilitate setting up k8s clusters on AWS EC2.
  • Operating a hybrid...