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We typically try to avoid making subjective, boasty claims in our documentation in recent times, but there remained both some older documentation that we've not recently revised and also some newer examples that are, in retrospect, also perhaps more "boasty" than they need to be. We prefer not to use this sort of boasty language because not everyone using Terraform has the same background and experience, and so what is "easy" or "intuitive" to one person may not be so to another person, and that should not suggest that the second person is in any way wrong or inadequate. In reviewing some of our use of the word "easy" here I tried as much as possible to surgically revise the existing content without getting drawn into a big rewrite, but in some cases the content was either pretty unsalvageable (due to talking about obsolete features that were removed long ago) or required some broader changes to make the result hopefully still get the same facts across. In those cases I've both removed some content entirely or adjusted larger paragraphs. This was not an exhaustive review and so I'm sure there's still plenty of room for similar improvements elsewhere. I also resisted the urge to update some pages that contain outdated information about currently-active features.
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layout, page_title, sidebar_current, description
| layout | page_title | sidebar_current | description |
|---|---|---|---|
| registry | Finding and Using Modules from the Terraform Registry | docs-registry-use | The Terraform Registry makes it simple to find and use modules. |
Finding and Using Modules
The Terraform Registry makes it simple to find and use modules.
Finding Modules
Every page on the registry has a search field for finding modules. Enter any type of module you're looking for (examples: "vault", "vpc", "database") and resulting modules will be listed. The search query will look at module name, provider, and description to match your search terms. On the results page, filters can be used further refine search results.
By default, only verified modules are shown in search results. Verified modules are reviewed by HashiCorp to ensure stability and compatibility. By using the filters, you can view unverified modules as well.
Using Modules
The Terraform Registry is integrated directly into Terraform, so a Terraform
configuration can refer to any module published in the registry. The syntax for
specifying a registry module is <NAMESPACE>/<NAME>/<PROVIDER>. For example:
hashicorp/consul/aws.
~> Note: Module registry integration was added in Terraform v0.10.6, and full versioning support in v0.11.0.
When viewing a module on the registry on a tablet or desktop, usage instructions are shown on the right side. You can copy and paste this to get started with any module. Some modules have required inputs you must set before being able to use the module.
module "consul" {
source = "hashicorp/consul/aws"
version = "0.1.0"
}
The terraform init command will download and cache any modules referenced by
a configuration.
Private Registry Module Sources
You can also use modules from a private registry, like the one provided by
Terraform Cloud. Private registry modules have source strings of the form
<HOSTNAME>/<NAMESPACE>/<NAME>/<PROVIDER>. This is the same format as the
public registry, but with an added hostname prefix.
module "vpc" {
source = "app.terraform.io/example_corp/vpc/aws"
version = "0.9.3"
}
Depending on the registry you're using, you might also need to configure credentials to access modules. See your registry's documentation for details. Terraform Cloud's private registry is documented here.
Private registry module sources are supported in Terraform v0.11.0 and newer.
Module Versions
Each module in the registry is versioned. These versions syntactically must follow semantic versioning. In addition to pure syntax, we encourage all modules to follow the full guidelines of semantic versioning.
Terraform since version 0.11 will resolve any provided module version constraints and using them is highly recommended to avoid pulling in breaking changes.
Terraform versions after 0.10.6 but before 0.11 have partial support for the registry protocol, but always download the latest version instead of honoring version constraints.