Rules are usually provided by ruleset plugins, but the rules for the Terraform Language are built into the TFLint binary. Below is a list of available rules.
| Rule | Description | Enabled |
|---|---|---|
| terraform_deprecated_interpolation | Disallow deprecated (0.11-style) interpolation | ✔ |
| terraform_deprecated_index | Disallow legacy dot index syntax | |
| terraform_unused_declarations | Disallow variables, data sources, and locals that are declared but never used | |
| terraform_comment_syntax | Disallow // comments in favor of # |
|
| terraform_documented_outputs | Disallow output declarations without description |
|
| terraform_documented_variables | Disallow variable declarations without description |
|
| terraform_typed_variables | Disallow variable declarations without type |
|
| terraform_module_pinned_source | Disallow specifying a git or mercurial repository as a module source without pinning to a version | ✔ |
| terraform_naming_convention | Enforces naming conventions for resources, data sources, etc | |
| terraform_required_version | Disallow terraform declarations without require_version |
|
| terraform_required_providers | Require that all providers have version constraints through required_providers | |
| terraform_unused_required_providers | Check that all required_providers are used in the module |
|
| terraform_standard_module_structure | Ensure that a module complies with the Terraform Standard Module Structure | |
| terraform_workspace_remote | terraform.workspace should not be used with a "remote" backend with remote execution |
✔ |