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Implementing DevOps with Ansible 2

You're reading from   Implementing DevOps with Ansible 2 A step-by-step guide to automating all DevOps stages with ease using Ansible

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Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781787120532
Length 266 pages
Edition 1st Edition
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Author (1):
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Jonathan McAllister Jonathan McAllister
Author Profile Icon Jonathan McAllister
Jonathan McAllister
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Table of Contents (13) Chapters Close

Preface 1. DevOps Fundamentals FREE CHAPTER 2. Configuration Management Essentials 3. Installing, Configuring, and Running Ansible 4. Playbooks and Inventory Files 5. Playbooks – Beyond the Fundamentals 6. Jinja in Ansible 7. Ansible Vault 8. Ansible Modules and Libraries 9. Integrating Ansible with CI and CD Solutions 10. Ansible and Docker 11. Extending Ansible 12. Ansible Galaxy

Iterators and Loops

In Ansible (and YAML for that matter), there is usually more than one way to accomplish any given automation. Automation actions can be implemented in simple YAML format or can be potentially grouped together by using the with_items iterator. In this section, we will take a look at iterators and learn how we can leverage them to reduce the amount of YAML code we need to write and organize our playbook tasks more effectively.

If you are familiar with basic programming concepts, the idea of an iterator is not new or novel. In fact, Ansible supports multiple variations of an iterator: everything from traditional loops to Do...Until, numerical iterators, and many more. Iterators in the context of Ansible playbook's are almost identical in nature as traditional programming implementations of iterators, with a few specific syntax caveats.

In this section, we...

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