Book Image

Practical DevOps - Second Edition

By : joakim verona
Book Image

Practical DevOps - Second Edition

By: joakim verona

Overview of this book

DevOps is a practical field that focuses on delivering business value as efficiently as possible. DevOps encompasses all code workflows from testing environments to production environments. It stresses cooperation between different roles, and how they can work together more closely, as the roots of the word imply—Development and Operations. Practical DevOps begins with a quick refresher on DevOps and continuous delivery and quickly moves on to show you how DevOps affects software architectures. You'll create a sample enterprise Java application that you’'ll continue to work with through the remaining chapters. Following this, you will explore various code storage and build server options. You will then learn how to test your code with a few tools and deploy your test successfully. In addition to this, you will also see how to monitor code for any anomalies and make sure that it runs as expected. Finally, you will discover how to handle logs and keep track of the issues that affect different processes. By the end of the book, you will be familiar with all the tools needed to deploy, integrate, and deliver efficiently with DevOps.
Table of Contents (12 chapters)

Executing code on the client

Several of the configuration management systems described here allow you to reuse the node descriptors to execute code on matching nodes. This is sometimes convenient. For example, maybe you want to run a directory-listing command on all HTTP servers facing the public internet, perhaps for debugging purposes.

In the Puppet ecosystem, this command execution system is called Marionette Collective, or MCollective for short.

A note about the exercises

It is pretty easy to try out the various deployment systems using Docker to manage the base OS, where we will do our experiments. It is a time-saving method that can be used when developing and debugging the deployment code which is specific to a particular...