Lint Terraform modules for provider mistakes and policy violations with TFLint

Check Terraform before plan or apply so invalid attributes, provider-specific mistakes, and custom rule violations are caught early.

Prerequisites

TFLint binary, Terraform configuration, optional plugin rules

Installation

Use the upstream install or setup path that matches your environment:

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

Requirements and caveats from upstream:

• Docker

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

Basic usage or getting-started notes:

• Download the appropriate archive from the latest release, verify it, and install the binary:

• console

• curl -sSLO https://github.com/terraform-linters/tflint/releases/latest/download/tflint_linux_amd64.zip

• Source: https://github.com/terraform-linters/tflint

• Extracted from upstream docs: https://raw.githubusercontent.com/terraform-linters/tflint/HEAD/README.md

Documentation

• https://github.com/terraform-linters/tflint

Source

• Agent Skill Exchange