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Historically our logic to handle discovering and installing providers has been spread across several different packages. This package is intended to become the home of all logic related to what is now called "provider cache directories", which means directories on local disk where Terraform caches providers in a form that is ready to run. That includes both logic related to interrogating items already in a cache (included in this commit) and logic related to inserting new items into the cache from upstream provider sources (to follow in later commits). These new codepaths are focused on providers and do not include other plugin types (provisioners and credentials helpers), because providers are the only plugin type that is represented by a heirarchical, decentralized namespace and the only plugin type that has an auto-installation protocol defined. The existing codepaths will remain to support the handling of the other plugin types that require manual installation and that use only a flat, locally-defined namespace. |
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README.md
Terraform
- Website: https://www.terraform.io
- Forums: HashiCorp Discuss
Terraform is a tool for building, changing, and versioning infrastructure safely and efficiently. Terraform can manage existing and popular service providers as well as custom in-house solutions.
The key features of Terraform are:
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Infrastructure as Code: Infrastructure is described using a high-level configuration syntax. This allows a blueprint of your datacenter to be versioned and treated as you would any other code. Additionally, infrastructure can be shared and re-used.
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Execution Plans: Terraform has a "planning" step where it generates an execution plan. The execution plan shows what Terraform will do when you call apply. This lets you avoid any surprises when Terraform manipulates infrastructure.
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Resource Graph: Terraform builds a graph of all your resources, and parallelizes the creation and modification of any non-dependent resources. Because of this, Terraform builds infrastructure as efficiently as possible, and operators get insight into dependencies in their infrastructure.
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Change Automation: Complex changesets can be applied to your infrastructure with minimal human interaction. With the previously mentioned execution plan and resource graph, you know exactly what Terraform will change and in what order, avoiding many possible human errors.
For more information, see the introduction section of the Terraform website.
Getting Started & Documentation
If you're new to Terraform and want to get started creating infrastructure, please checkout our Getting Started guide, available on the Terraform website.
All documentation is available on the Terraform website:
Developing Terraform
This repository contains only Terraform core, which includes the command line interface and the main graph engine. Providers are implemented as plugins that each have their own repository in the terraform-providers organization on GitHub. Instructions for developing each provider are in the associated README file. For more information, see the provider development overview.
To learn more about compiling Terraform and contributing suggested changes, please refer to the contributing guide.