Book Image

The Docker Workshop

By : Vincent Sesto, Onur Yılmaz, Sathsara Sarathchandra, Aric Renzo, Engy Fouda
5 (3)
Book Image

The Docker Workshop

5 (3)
By: Vincent Sesto, Onur Yılmaz, Sathsara Sarathchandra, Aric Renzo, Engy Fouda

Overview of this book

No doubt Docker Containers are the future of highly-scalable software systems and have cost and runtime efficient supporting infrastructure. But learning it might look complex as it comes with many technicalities. This is where The Docker Workshop will help you. Through this workshop, you’ll quickly learn how to work with containers and Docker with the help of practical activities.? The workshop starts with Docker containers, enabling you to understand how it works. You’ll run third party Docker images and also create your own images using Dockerfiles and multi-stage Dockerfiles. Next, you’ll create environments for Docker images, and expedite your deployment and testing process with Continuous Integration. Moving ahead, you’ll tap into interesting topics and learn how to implement production-ready environments using Docker Swarm. You’ll also apply best practices to secure Docker images and to ensure that production environments are running at maximum capacity. Towards the end, you’ll gather skills to successfully move Docker from development to testing, and then into production. While doing so, you’ll learn how to troubleshoot issues, clear up resource bottlenecks and optimize the performance of services. By the end of this workshop, you’ll be able to utilize Docker containers in real-world use cases.
Table of Contents (17 chapters)
Preface

Docker Overlay Networking

Overlay networks are logical networks that are created on top of a physical (underlay) network for specific purposes. A Virtual Private Network (VPN), for example, is a common type of overlay network that uses the internet to create a link to another private network. Docker can create and manage overlay networks between containers, which can be used for containerized applications to directly talk to one another. When containers are deployed into an overlay network, it does not matter which host in the cluster they are deployed on; they will have direct connectivity to other containerized services that exist in the same overlay network in the same way that they would if they existed on the same physical host.

Exercise 6.04: Defining Overlay Networks

Docker overlay networking is used to create mesh networks between machines in a Docker swarm cluster. In this exercise, you will use two machines to create a basic Docker swarm cluster. Ideally, these machines...