Book Image

Docker Cookbook - Second Edition

By : Ken Cochrane, Jeeva S. Chelladhurai, Neependra K Khare
2 (1)
Book Image

Docker Cookbook - Second Edition

2 (1)
By: Ken Cochrane, Jeeva S. Chelladhurai, Neependra K Khare

Overview of this book

Docker is an open source tool used for creating, deploying, and running applications using containers. With more than 100 self-contained tutorials, this book examines common pain points and best practices for developers building distributed applications with Docker. Each recipe in this book addresses a specific problem and offers a proven, best practice solution with insights into how it works, so that you can modify the code and configuration files to suit your needs. The Docker Cookbook begins by guiding you in setting up Docker in different environments and explains how to work with its containers and images. You’ll understand Docker orchestration, networking, security, and hosting platforms for effective collaboration and efficient deployment. The book also covers tips and tricks and new Docker features that support a range of other cloud offerings. By the end of this book, you’ll be able to package and deploy end-to-end distributed applications with Docker and be well-versed with best practice solutions for common development problems.
Table of Contents (13 chapters)

Setting up a cluster with Docker Swarm

Docker Swarm (https://docs.docker.com/engine/swarm/) is native clustering that is built in to Docker. It groups multiple Docker hosts into a single pool in which you can launch containers. To keep things simple, here, we'll use VirtualBox as the backend to configure the hosts.

There are two versions of Swarm. In this recipe, we will be using the newer of the two called Docker Swarm mode, which is based on SwarmKit (https://github.com/docker/swarmkit). The newer version makes it much easier to get up and running, and removes a lot of the steps that were previously required. Swarm mode is built into the Docker daemon, so there is no extra software required in order to use it.

Docker Swarm mode supports two types of nodes; a manager and a worker. Manager nodes perform the orchestration and cluster management functions for the Swarm. They...