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Mastering Ansible

Mastering Ansible

4.6 (15)
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Mastering Ansible

Mastering Ansible

4.6 (15)

Overview of this book

Automation is critical to success in the world of DevOps. How quickly and efficiently an application deployment can be automated, or a new infrastructure can be built up, can be the difference between a successful product or a failure. Ansible provides a simple yet powerful automation engine. Beyond the basics of Ansible lie a host of advanced features which are available to help you increase efficiency and accomplish complex orchestrations with ease. This book provides you with the knowledge you need to understand how Ansible works at a fundamental level and leverage its advanced capabilities. You'll learn how to encrypt Ansible content at rest and decrypt data at runtime. You will master the advanced features and capabilities required to tackle the complex automation challenges of today and beyond. You will gain detailed knowledge of Ansible workflows, explore use cases for advanced features, craft well thought out orchestrations, troubleshoot unexpected behaviour, and extend Ansible through customizations. Finally, you will discover the methods used to examine and debug Ansible operations, helping you to understand and resolve issues.
Table of Contents (10 chapters)
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Encrypting data at rest

As a configuration management system or an orchestration engine, Ansible has great power. In order to wield that power, it is necessary to entrust secret data to Ansible. An automated system that prompts the operator for passwords all the time is not very efficient. To maximize the power of Ansible, secret data has to be written to a file that Ansible can read and utilize the data from within.

This creates a risk though! Your secrets are sitting there on your filesystem in plain text. This is a physical and digital risk. Physically, the computer could be taken from you and pawed through for secret data. Digitally, any malicious software that can break the boundaries set upon it could read any data your user account has access to. If you utilize a source control system, the infrastructure that houses the repository is just as much at risk.

Thankfully, Ansible provides a facility to protect your data at rest. That facility is Vault, which allows for encrypting text...

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