Book Image

Implementing DevOps with Ansible 2

By : Jonathan McAllister
Book Image

Implementing DevOps with Ansible 2

By: Jonathan McAllister

Overview of this book

Thinking about adapting the DevOps culture for your organization using a very simple, yet powerful automation tool, Ansible 2? Then this book is for you! In this book, you will start with the role of Ansible in the DevOps module, which covers fundamental DevOps practices and how Ansible is leveraged by DevOps organizations to implement consistent and simplified configuration management and deployment. You will then move on to the next module, Ansible with DevOps, where you will understand Ansible fundamentals and how Ansible Playbooks can be used for simple configuration management and deployment tasks. After simpler tasks, you will move on to the third module, Ansible Syntax and Playbook Development, where you will learn advanced configuration management implementations, and use Ansible Vault to secure top-secret information in your organization. In this module, you will also learn about popular DevOps tools and the support that Ansible provides for them (MYSQL, NGINX, APACHE and so on). The last module, Scaling Ansible for the enterprise, is where you will integrate Ansible with CI and CD solutions and provision Docker containers using Ansible. By the end of the book you will have learned to use Ansible to leverage your DevOps tasks.

Related Content you might be interested in

Current Title:

Small book image
Implementing DevOps with Ansible 2
Jonathan McAllister
Jul, 2017 | 266 pages
Small book image
Practical Ansible 2
Fabio Alessandro Locati | James Freeman | Daniel Oh
Jun, 2020 | 410 pages
Small book image
Ansible Quick Start Guide
Mohamed Alibi
Sep, 2018 | 214 pages
Small book image
Practical Ansible
James Freeman | Daniel Oh | Fabio Alessandro Locati
Sep, 2023 | 420 pages
Table of Contents (20 chapters)
Title Page
Title Page
Credits
Credits
About the Author
About the Author
Acknowledgments
Acknowledgments
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Customer Feedback
Customer Feedback
Preface
Preface
Free Chapter
1
DevOps Fundamentals
DevOps Fundamentals
DevOps 101
The History of DevOps
DevOps in the Modern Software Organization
Summary
2
Configuration Management Essentials
Configuration Management Essentials
Understanding Configuration Management
Origins of Configuration Management
The Aims of Configuration Management
Basic Principles of Configuration Management
Configuration Management Best Practices
How Ansible Simplifies DevOps Implementations
Binary Artifact Management and Ansible
Summary
3
Installing, Configuring, and Running Ansible
Installing, Configuring, and Running Ansible
Installing Ansible
The Ansible Architecture
The Ansible Command-Line Interface
Configuring Ansible
The Ansible Inventory
Summary
4
Playbooks and Inventory Files
Playbooks and Inventory Files
Ansible Playbook Constructs
Ansible Play's and Task's
Variables and Variable Files
Hosts and Inventory
Targeting Infrastructure
Ansible Modules
Summary
5
Playbooks – Beyond the Fundamentals
Playbooks – Beyond the Fundamentals
playbook's and Conditional Logic
Iterators and Loops
Includes
Ansible Roles
Ansible Register Variables
Ansible Handlers
Summary
6
Jinja in Ansible
Jinja in Ansible
Introducing Jinja
Jinja2 Programming Constructs
Applying Jinja in Ansible Playbook's
Summary
7
Ansible Vault
Ansible Vault
The Ansible Vault Architecture
Basic Vault Usage
Real-world Ansible Vault Workflow
Summary
8
Ansible Modules and Libraries
Ansible Modules and Libraries
Introducing Ansible Modules
Integrating Ansible with Other Technologies
Summary
9
Integrating Ansible with CI and CD Solutions
Integrating Ansible with CI and CD Solutions
Overview of Continuous Integration
Overview of Continuous Delivery
Ansible's Role in CI->CD
Integrating Ansible with Jenkins
Integrating Ansible with Vagrant
Summary
10
Ansible and Docker
Ansible and Docker
Understanding Docker's Architecture
Managing Docker Containers with Ansible
Using Ansible to Create Docker Images
Managing Docker Images with Ansible
Gathering Facts About Docker Containers
Summary
11
Extending Ansible
Extending Ansible
Understanding Ansible Plugins and its Architecture
Setting Up the Ansible Module Development Environment
Developing Hello World Ansible Module
Setting up the Ansible Plugin Development Environment
Understanding the Different Types of Plugins
Summary
12
Ansible Galaxy
Ansible Galaxy
Ansible Galaxy Fundamentals
Summary

Gathering Facts About Docker Containers

Facts are the bread and butter of how Ansible works and manages information about its controlled/automated systems. Facts represent data about the device and the current state. Ansible provides a set of playbook tasks that can be readily leveraged to gather facts about Docker images. Let's take a look at a couple of examples of how to accomplish this.

This is example 1:

- name: Inspect a single Docker image
 docker_image_facts:
 name: foo/centos-7

This is example 2:

- name: Inspect multiple Docker images
 docker_image_facts:
 name:
 - foo/centos-7
 - sinatra

The preceding playbook tasks inspect a single or multiple Docker image setup and report the facts. The fact data itself is stored in the return value. An example of the output is provided as follows:

[{'Container': 'e83a452b8fb8ff43oj094j4050131ca5c863629a47639530d9ad2008d610', 'Name': 'registry:2', 'Author': '', 'GraphDriver': {'Data': None, 'Name': 'aufs'}, 'Architecture': 'amd64', 'VirtualSize': 165808884...
Previous Section
End of Section 6
Next Section