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This is a prototype of how the CLI layer might make use of Terraform Core's ability to produce a partial plan if it encounters an error during planning, with two new situations: - When using local CLI workflow, Terraform will show the partial plan before showing any errors. - "terraform plan" has a new option -always-out=..., which is similar to the existing -out=... but additionally instructs Terraform to produce a plan file even if the plan is incomplete due to errors. This means that the plan can still be inspected by external UI implementations. This is just a prototype to explore how these parts might fit together. It's not a complete implementation and so should not be shipped. In particular, it doesn't include any mention of a plan being incomplete in the "terraform show -json" output or in the "terraform plan -json" output, both of which would be required for a complete solution.
Terraform
- Website: https://www.terraform.io
- Forums: HashiCorp Discuss
- Documentation: https://www.terraform.io/docs/
- Tutorials: HashiCorp's Learn Platform
- Certification Exam: HashiCorp Certified: Terraform Associate
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, refer to the What is Terraform? page on the Terraform website.
Getting Started & Documentation
Documentation is available on the Terraform website:
If you're new to Terraform and want to get started creating infrastructure, please check out our Getting Started guides on HashiCorp's learning platform. There are also additional guides to continue your learning.
Show off your Terraform knowledge by passing a certification exam. Visit the certification page for information about exams and find study materials on HashiCorp's learning platform.
Developing Terraform
This repository contains only Terraform core, which includes the command line interface and the main graph engine. Providers are implemented as plugins, and Terraform can automatically download providers that are published on the Terraform Registry. HashiCorp develops some providers, and others are developed by other organizations. For more information, see Extending Terraform.
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To learn more about compiling Terraform and contributing suggested changes, refer to the contributing guide.
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To learn more about how we handle bug reports, refer to the bug triage guide.
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To learn how to contribute to the Terraform documentation in this repository, refer to the Terraform Documentation README.