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Mastering Ansible, Second Edition

You're reading from Mastering Ansible, Second Edition Master the ins and outs of advanced operations with Ansible

Product type Paperback

Published in Mar 2017

Publisher Packt

ISBN-13 9781787125681

Length 310 pages

Edition 2nd Edition

Languages

Python

Tools

Ansible

Concepts

Configuration Management

Author (1):

Keating

View More author details

Table of Contents (16) Chapters

Mastering Ansible - Second Edition

Credits

About the Author

About the Reviewer

www.PacktPub.com

Customer Feedback

Preface

1. System Architecture and Design of Ansible FREE CHAPTER

2. Protecting Your Secrets with Ansible

3. Unlocking the Power of Jinja2 Templates

4. Controlling Task Conditions

5. Composing Reusable Ansible Content with Roles

6. Minimizing Downtime with Rolling Deployments

7. Troubleshooting Ansible

8. Extending Ansible

9. Infrastructure Provisioning

Error recovery

While error conditions can be narrowly defined, there will be times when real errors happen. Ansible provides a method to react to true errors, a method that allows running additional tasks when an error occurs, defining specific tasks that always execute even if there was an error, or even both. This method is the blocks feature.

The blocks feature, introduced with Ansible version 2.0, provides some additional structure to play task listings. Blocks can group tasks together into a logical unit, which can have task controls applied to the unit as a whole. In addition, a Block of tasks can have optional rescue and always sections.

Rescue

The rescue section of a block defines a logical unit of tasks that will be executed should a true failure be encountered within a block. As Ansible performs the tasks within a block, from top to bottom, when a true failure is encountered execution will jump to the first task of the rescue section of the block, if it exists. Then tasks are performed...

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Authors (1)

Keating

Keating

Jesse Keating is an accomplished Ansible user, contributor, and presenter. He has been an active member of the Linux and open source community for over 15 years. He has firsthand experience involving a variety of IT activities, software development, and large-scale system administration. He has presented at numerous conferences and meetups, and has written many articles on a variety of topics.

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