ec6fe93fa8
Previously we were treating it as a programming error to ask for the instances of a resource inside an instance of a module that is declared but whose declaration doesn't include the given instance key. However, that's actually a valid situation which can arise if, for example, the user has changed the repetition/expansion mode for an existing module call and so now all of the resource instances addresses it previously contained are "orphaned". To represent that, we'll instead say that an invalid instance key of a declared module behaves as if it contains no resource instances at all, regardless of the configurations of any resources nested inside. This then gives the result needed to successfully detect all of the former resource instances as "orphaned" and plan to destroy them. However, this then introduces a new case for NodePlannableResourceInstanceOrphan.deleteActionReason to deal with: the resource configuration still exists (because configuration isn't aware of individual module/resource instances) but the module instance does not. This actually allows us to resolve, at least partially, a previous missing piece of explaining to the user why the resource instances are planned for deletion in that case, finally allowing us to be explicit to the user that it's because of the module instance being removed, which internally we call plans.ResourceInstanceDeleteBecauseNoModule. Co-authored-by: Alisdair McDiarmid <alisdair@users.noreply.github.com> |
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| BUGPROCESS.md | ||
| CHANGELOG.md | ||
| CODEOWNERS | ||
| Dockerfile | ||
| LICENSE | ||
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| README.md | ||
| checkpoint.go | ||
| codecov.yml | ||
| commands.go | ||
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| help.go | ||
| main.go | ||
| main_test.go | ||
| plugins.go | ||
| provider_source.go | ||
| signal_unix.go | ||
| signal_windows.go | ||
| version.go | ||
| working_dir.go | ||
README.md
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, see the introduction section of 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.
To learn more about compiling Terraform and contributing suggested changes, please refer to the contributing guide.
To learn more about how we handle bug reports, please read the bug triage guide.