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Install TFLint using Winget - wingetCollections
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TFLint logo

TFLint Terraform Linters

lint terraform tflint
Use this command to install TFLint:
winget install --id=TerraformLinters.tflint -e

A Pluggable Terraform Linter

TFLint is a pluggable linter designed to help identify issues in Terraform configurations, ensuring code quality, consistency, and security across infrastructure-as-code projects.

Key Features:

  • Detects potential errors for major cloud providers (AWS, Azure, GCP) by validating resource types, configurations, and dependencies.
  • Warns about deprecated syntax and unused declarations to keep Terraform files up-to-date and clean.
  • Enforces best practices through configurable rulesets, including naming conventions and resource usage guidelines.
  • Extensible via plugins, allowing users to add custom rules or integrate with additional tools.
  • Supports automated fixes for certain issues, streamlining the code improvement process.

Audience & Benefit:

Ideal for Terraform developers, DevOps engineers, and cloud architects who prioritize code quality and maintainability. By identifying errors early in the development cycle, TFLint helps teams reduce risks, improve compliance, and ensure consistent infrastructure deployments without disrupting workflows.

TFLint can be installed via winget, making it easy to integrate into existing development environments.

README

TFLint

Build Status GitHub release Terraform Compatibility License: MPL 2.0 + BUSL 1.1 Go Report Card Homebrew

A Pluggable Terraform Linter

Features

TFLint is a framework and each feature is provided by plugins, the key features are as follows:

  • Find possible errors (like invalid instance types) for Major Cloud providers (AWS/Azure/GCP).
  • Warn about deprecated syntax, unused declarations.
  • Enforce best practices, naming conventions.

Installation

Bash script (Linux):

curl -s https://raw.githubusercontent.com/terraform-linters/tflint/master/install_linux.sh | bash

Homebrew (macOS):

brew install tflint

Chocolatey (Windows):

choco install tflint

NOTE: The Chocolatey package is NOT directly maintained by the TFLint maintainers. The latest version is always available by manual installation.

Verification

GitHub CLI (Recommended)

Artifact Attestations are available that can be verified using the GitHub CLI.

gh attestation verify checksums.txt -R terraform-linters/tflint
sha256sum --ignore-missing -c checksums.txt

Cosign

Cosign verify-blob command ensures that the release was built with GitHub Actions in this repository.

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Versions
0.58.1
0.58.0
0.57.0
0.56.0
0.54.0
0.52.0
0.50.0
0.48.0
0.47.0
0.46.1
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Website
github.com
License
Last Updated
7/13/2025
cosign verify-blob --certificate=checksums.txt.pem --signature=checksums.txt.keyless.sig --certificate-identity-regexp="^https://github.com/terraform-linters/tflint" --certificate-oidc-issuer=https://token.actions.githubusercontent.com checksums.txt
sha256sum --ignore-missing -c checksums.txt

Docker

Instead of installing directly, you can use the Docker image:

docker run --rm -v $(pwd):/data -t ghcr.io/terraform-linters/tflint

To download plugins, you can override the entrypoint to a shell (sh) to run --init and the main command in a single docker run command:

 docker run --rm -v $(pwd):/data -t --entrypoint /bin/sh ghcr.io/terraform-linters/tflint -c "tflint --init && tflint"

GitHub Actions

If you want to run on GitHub Actions, setup-tflint action is available.

Getting Started

First, enable rules for Terraform Language (e.g. warn about deprecated syntax, unused declarations). TFLint Ruleset for Terraform Language is bundled with TFLint, so you can use it without installing it separately.

The bundled plugin enables the "recommended" preset by default, but you can disable the plugin or use a different preset. Declare the plugin block in .tflint.hcl like this:

plugin "terraform" {
  enabled = true
  preset  = "recommended"
}

See the tflint-ruleset-terraform documentation for more information.

Next, If you are using an AWS/Azure/GCP provider, it is a good idea to install the plugin and try it according to each usage:

  • Amazon Web Services
  • Microsoft Azure
  • Google Cloud Platform

If you want to extend TFLint with other plugins, you can declare the plugins in the config file and easily install them with tflint --init.

plugin "foo" {
  enabled = true
  version = "0.1.0"
  source  = "github.com/org/tflint-ruleset-foo"

  signing_key = <<-KEY
  -----BEGIN PGP PUBLIC KEY BLOCK-----

  mQINBFzpPOMBEADOat4P4z0jvXaYdhfy+UcGivb2XYgGSPQycTgeW1YuGLYdfrwz
  9okJj9pMMWgt/HpW8WrJOLv7fGecFT3eIVGDOzyT8j2GIRJdXjv8ZbZIn1Q+1V72
  AkqlyThflWOZf8GFrOw+UAR1OASzR00EDxC9BqWtW5YZYfwFUQnmhxU+9Cd92e6i
  ...
  KEY
}

See also Configuring Plugins.

You can discover plugins from other organizations on GitHub via the tflint-ruleset topic.

If you want to add custom rules that are not in existing plugins, you can build your own plugin or write your own policy in Rego. See Writing Plugins or OPA Ruleset.

Usage

TFLint inspects files under the current directory by default. You can change the behavior with the following options/arguments:

$ tflint --help
Usage:
  tflint --chdir=DIR/--recursive [OPTIONS]

Application Options:
  -v, --version                                                 Print TFLint version
      --init                                                    Install plugins
      --langserver                                              Start language server
  -f, --format=[default|json|checkstyle|junit|compact|sarif]    Output format
  -c, --config=FILE                                             Config file name (default: .tflint.hcl)
      --ignore-module=SOURCE                                    Ignore module sources
      --enable-rule=RULE_NAME                                   Enable rules from the command line
      --disable-rule=RULE_NAME                                  Disable rules from the command line
      --only=RULE_NAME                                          Enable only this rule, disabling all other defaults. Can be specified multiple times
      --enable-plugin=PLUGIN_NAME                               Enable plugins from the command line
      --var-file=FILE                                           Terraform variable file name
      --var='foo=bar'                                           Set a Terraform variable
      --call-module-type=[all|local|none]                       Types of module to call (default: local)
      --chdir=DIR                                               Switch to a different working directory before executing the command
      --recursive                                               Run command in each directory recursively
      --filter=FILE                                             Filter issues by file names or globs
      --force                                                   Return zero exit status even if issues found
      --minimum-failure-severity=[error|warning|notice]         Sets minimum severity level for exiting with a non-zero error code
      --color                                                   Enable colorized output
      --no-color                                                Disable colorized output
      --fix                                                     Fix issues automatically
      --no-parallel-runners                                     Disable per-runner parallelism
      --max-workers=N                                           Set maximum number of workers in recursive inspection (default: number of CPUs)

Help Options:
  -h, --help                                                    Show this help message

See User Guide for details.

Debugging

If you don't get the expected behavior, you can see the detailed logs when running with TFLINT_LOG environment variable.

$ TFLINT_LOG=debug tflint

Developing

See Developer Guide.

Security

If you find a security vulnerability, please refer our security policy.

License

Please note that although much of this project is licensed under MPL 2.0, some files in the terraform package are licensed under BUSL 1.1.

For the reasons stated above, the executable forms (release binaries) is bound by both licenses.

See also https://discuss.hashicorp.com/t/hashicorp-projects-changing-license-to-business-source-license-v1-1/57106/7

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