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Getting Started with Terraform

Getting Started with Terraform

By : Kirill Shirinkin
2 (1)
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Getting Started with Terraform

Getting Started with Terraform

2 (1)
By: Kirill Shirinkin

Overview of this book

Terraform is a tool used to efficiently build, configure, and improve production infrastructure. It can manage existing infrastructure as well as create custom in-house solutions. This book shows you when and how to implement infrastructure as a code practices with Terraform. It covers everything necessary to set up complete management of infrastructure with Terraform, starting with the basics of using providers and resources. This book is a comprehensive guide that begins with very small infrastructure templates and takes you all the way to managing complex systems, all using concrete examples that evolve over the course of the book. It finishes with the complete workflow of managing a production infrastructure as code – this is achieved with the help of version control and continuous integration. At the end of this book, you will be familiar with advanced techniques such as multi-provider support and multiple remote modules.
Table of Contents (15 chapters)
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Getting Started with Terraform
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Reprovisioning machines with null_resource


null_resource doesn't create anything. It's a container for provisioners. Because it is not directly connected to any piece of the infrastructure, it's not a big deal to destroy it in order to retrigger provisioners it has defined on.

There are two types of provisioning we are doing right now with Puppet: the one-time Puppet installation and Puppet run, which should be retriggered in case the manifest changes--imagine that repository IP changed and somehow we still don't have a proper DNS server in place.

Note

If you have Puppet Master, all of it makes zero sense: modules and manifests are stored on the master, and the Puppet agent is running as a system service and applies manifests automatically every N minutes. On the contrary, this approach can be very handy if you decide to go for masterless setup, because in this case, you have a whole new set of problems of how to distribute your Puppet code to all the servers you have.

Slim down the provisioners...

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