Book Image

DevOps Automation Cookbook

By : Michael Duffy
Book Image

DevOps Automation Cookbook

By: Michael Duffy

Overview of this book

<p>There has been a recent explosion in tools that allow you to redefine the delivery of infrastructure and applications, using a combination of automation and testing to deliver continuous deployment. DevOps has garnered interest from every quarter, and is rapidly being recognized as a radical shift, as large as the Agile movement for the delivery of software.</p> <p>This book takes a collection of some of the coolest software available today and shows you how to use it to create impressive changes to the way you deliver applications and software. It tackles the plethora of tools that are now available to enable organizations to take advantage of the automation, monitoring, and configuration management techniques that define a DevOps-driven infrastructure.</p> <p>Starting off with the fundamental command-line tools that every DevOps enthusiast must know, this book will guide you through the implementation of the Ansible tool to help you facilitate automation and perform diverse tasks. You will explore how to build hosts automatically with the creation of Apt mirrors and interactive pre-seeds, which are of the utmost importance for Ubuntu automation. You will also delve into the concept of virtualization and creating and manipulating guests with ESXi. Following this, you will venture into the application of Docker; learn how to install, run, network, and restore Docker containers; and also learn how to build containers in Jenkins and deploy apps using a combination of Ansible, Docker, and Jenkins. You will also discover how to filter data with Grafana and the usage of InfluxDB along with unconventional log management. Finally, you will get acquainted with cloud infrastructure, employing the Heroku and Amazon AWS platforms.</p> <p>By tackling real-world issues, this book will guide you through a huge variety of tools, giving new users the ability to get up and running and offering advanced users some interesting recipes that may help with existing issues.</p>
Table of Contents (19 chapters)
DevOps Automation Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Automated installation using PXE boot and a Preseed file


Now that we have a mirrored repository of packages, we can also use it to serve the files that build our hosts over the network. Building bare metal servers over the network has many advantages, allowing you to simply boot a bare metal server and configure it via DHCP and install an OS, all without any additional interactions. Taken to its extreme, PXE booting allows the use of completely diskless clients, which can boot and run across the network.

This is a very long recipe but it is required. Although it's relatively straightforward to set up a PXE booting environment, it does require several elements. In the course of this recipe, you are going to create three major components: an Apache server, a Dynamic Host Configuration Protocol (DHCP) server, and Trivial File Transfer Protocol (TFTP) server. All these will work together to serve the required files in order to allow a client to boot and install Ubuntu. Although there are several...