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Mastering Ansible, 4th Edition - Fourth Edition

You're reading from  Mastering Ansible, 4th Edition - Fourth Edition

Product type Book
Published in Dec 2021
Publisher Packt
ISBN-13 9781801818780
Pages 540 pages
Edition 4th Edition
Languages
Concepts
Authors (2):
James Freeman James Freeman
Profile icon James Freeman
LinkedIn
James Freeman is an accomplished IT professional with over 25 years' experience in the technology industry. He has more than a decade of first-hand experience in solving real-world enterprise problems in production environments using Ansible, open source, and AWS. As part of this work, he frequently introduces Ansible as a new technology to businesses and CTOs for the first time. In addition, he has co-authored five books and one video training course on Ansible, facilitated bespoke Ansible workshops and training sessions, and presented at both international conferences and meetups on Ansible.
See other products by James Freeman
Jesse Keating Jesse Keating
Profile icon Jesse Keating
LinkedIn
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.
See other products by Jesse Keating
View More author details

Table of Contents (18) Chapters

Preface 1. Section 1: Ansible Overview and Fundamentals
2. Chapter 1: The System Architecture and Design of Ansible 3. Chapter 2: Migrating from Earlier Ansible Versions 4. Chapter 3: Protecting Your Secrets with Ansible 5. Chapter 4: Ansible and Windows – Not Just for Linux 6. Chapter 5: Infrastructure Management for Enterprises with AWX 7. Section 2: Writing and Troubleshooting Ansible Playbooks
8. Chapter 6: Unlocking the Power of Jinja2 Templates 9. Chapter 7: Controlling Task Conditions 10. Chapter 8: Composing Reusable Ansible Content with Roles 11. Chapter 9: Troubleshooting Ansible 12. Chapter 10: Extending Ansible 13. Section 3: Orchestration with Ansible
14. Chapter 11: Minimizing Downtime with Rolling Deployments 15. Chapter 12: Infrastructure Provisioning 16. Chapter 13: Network Automation 17. Other Books You May Enjoy

Expanding and contracting

An alternative to the in-place upgrade strategy is the expand and contract strategy. This strategy has become popular of late, thanks to the self-service nature of on-demand infrastructures, such as cloud computing or virtualization pools. The ability to create new servers on-demand from a large pool of available resources means that every deployment of an application can happen on brand new systems. This strategy avoids a host of issues, such as a buildup of cruft on long-running systems, such as the following:

  • Configuration files that are no longer managed by Ansible being left behind
  • Runaway processes consuming resources in the background
  • Changes being made to the server manually by human beings without updating the Ansible playbooks

Starting fresh each time also removes the differences between initial deployment and an upgrade. The same code path can be used, reducing the risk of surprises when upgrading an application...

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Authors (2)

Left arrow icon
Profile icon James Freeman
LinkedIn
James Freeman is an accomplished IT professional with over 25 years' experience in the technology industry. He has more than a decade of first-hand experience in solving real-world enterprise problems in production environments using Ansible, open source, and AWS. As part of this work, he frequently introduces Ansible as a new technology to businesses and CTOs for the first time. In addition, he has co-authored five books and one video training course on Ansible, facilitated bespoke Ansible workshops and training sessions, and presented at both international conferences and meetups on Ansible.
Read more
See other products by James Freeman
Profile icon Jesse Keating
LinkedIn
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.
See other products by Jesse Keating
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