Book Image

Docker High Performance - Second Edition

By : Allan Espinosa, Russ McKendrick
Book Image

Docker High Performance - Second Edition

By: Allan Espinosa, Russ McKendrick

Overview of this book

Docker is an enterprise-grade container platform that allows you to build and deploy your apps. Its portable format lets you run your code right from your desktop workstations to popular cloud computing providers. This comprehensive guide will improve your Docker work?ows and ensure your application's production environment runs smoothly. This book starts with a refresher on setting up and running Docker and details the basic setup for creating a Docker Swarm cluster. You will then learn how to automate this cluster by using the Chef server and cookbooks. After that, you will run the Docker monitoring system with Prometheus and Grafana, and deploy the ELK stack. You will also learn best practices for optimizing Docker images. After deploying containers with the help of Jenkins, you will then move on to a tutorial on using Apache JMeter to analyze your application's performance. You will learn how to use Docker Swarm and NGINX to load-balance your application, and how common debugging tools in Linux can be used to troubleshoot Docker containers. By the end of this book, you will be able to integrate all the optimizations that you have learned and put everything into practice in your applications.
Table of Contents (16 chapters)
Title Page
Copyright and Credits
About Packt
Contributors
Preface
Index

Configuring the Docker host


Now that we have all the components of our Chef environment set up properly, we can start writing Chef recipes to actually describe what configuration our Docker hosts should have. In addition, we will leapfrog our productivity by taking advantage of existing Chef cookbooks in the Chef ecosystem. As Docker is a popular infrastructure stack to deploy, we can use cookbooks in the wild that allow us to configure our Docker hosts. Chef cookbooks provided by the community can be found in theChef Supermarket. We can go tohttp://supermarket.chef.ioto discover other cookbooks that we can readily use.

In this section, we will learn how to write Chef recipes and apply them to our node. 

Writing Chef recipes

The next few steps show us how to write the Chef recipe for our Docker host:

  1. Let us use the Chef development kit's chef generate cookbook command to generate a boilerplate for our cookbook. After entering the cookbooks directory, issue the following command:
$ cd cookbooks...