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terraform-fmt

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terraform-fmt documentation

terraform - GitHub

Configuration in MegaLinter

Variable Description Default value
TERRAFORM_TERRAFORM_FMT_ARGUMENTS User custom arguments to add in linter CLI call
Ex: -s --foo "bar"
TERRAFORM_TERRAFORM_FMT_COMMAND_REMOVE_ARGUMENTS User custom arguments to remove from command line before calling the linter
Ex: -s --foo "bar"
TERRAFORM_TERRAFORM_FMT_FILTER_REGEX_INCLUDE Custom regex including filter
Ex: (src\|lib)		 Include every file
TERRAFORM_TERRAFORM_FMT_FILTER_REGEX_EXCLUDE Custom regex excluding filter
Ex: (test\|examples)		 Exclude no file
TERRAFORM_TERRAFORM_FMT_CLI_LINT_MODE Override default CLI lint mode
- file: Calls the linter for each file
- project: Call the linter from the root of the project		 file
TERRAFORM_TERRAFORM_FMT_FILE_EXTENSIONS Allowed file extensions. "*" matches any extension, "" matches empty extension. Empty list excludes all files
Ex: [".py", ""]		 [".tf"]
TERRAFORM_TERRAFORM_FMT_FILE_NAMES_REGEX File name regex filters. Regular expression list for filtering files by their base names using regex full match. Empty list includes all files
Ex: ["Dockerfile(-.+)?", "Jenkinsfile"]		 Include every file
TERRAFORM_TERRAFORM_FMT_PRE_COMMANDS List of bash commands to run before the linter None
TERRAFORM_TERRAFORM_FMT_POST_COMMANDS List of bash commands to run after the linter None
TERRAFORM_TERRAFORM_FMT_UNSECURED_ENV_VARIABLES List of env variables explicitly not filtered before calling TERRAFORM_TERRAFORM_FMT and its pre/post commands None
TERRAFORM_TERRAFORM_FMT_DISABLE_ERRORS Run linter but consider errors as warnings true
TERRAFORM_TERRAFORM_FMT_DISABLE_ERRORS_IF_LESS_THAN Maximum number of errors allowed 0
TERRAFORM_TERRAFORM_FMT_CLI_EXECUTABLE Override CLI executable ['terraform']

IDE Integration

Use terraform-fmt in your favorite IDE to catch errors before MegaLinter !

IDE Extension Name Install
Atom terraform-fmt Visit Web Site
IDEA HashiCorp Terraform / HCL language support
Sublime Text Terrafmt Visit Web Site
Visual Studio Code HashiCorp Terraform Install in VSCode

MegaLinter Flavors

This linter is available in the following flavors

Flavor Description Embedded linters Info
all Default MegaLinter Flavor 124 Docker Image Size (tag) Docker Pulls
cupcake MegaLinter for the most commonly used languages 83 Docker Image Size (tag) Docker Pulls
formatters Contains only formatters 17 Docker Image Size (tag) Docker Pulls
terraform Optimized for TERRAFORM based projects 54 Docker Image Size (tag) Docker Pulls

Behind the scenes

How are identified applicable files

  • File extensions: .tf

How the linting is performed

  • terraform-fmt is called one time by identified file (file CLI lint mode)

Example calls

terraform fmt myfile.tf

Help content

Usage: terraform [global options] <subcommand> [args]

The available commands for execution are listed below.
The primary workflow commands are given first, followed by
less common or more advanced commands.

Main commands:
  init          Prepare your working directory for other commands
  validate      Check whether the configuration is valid
  plan          Show changes required by the current configuration
  apply         Create or update infrastructure
  destroy       Destroy previously-created infrastructure

All other commands:
  console       Try Terraform expressions at an interactive command prompt
  fmt           Reformat your configuration in the standard style
  force-unlock  Release a stuck lock on the current workspace
  get           Install or upgrade remote Terraform modules
  graph         Generate a Graphviz graph of the steps in an operation
  import        Associate existing infrastructure with a Terraform resource
  login         Obtain and save credentials for a remote host
  logout        Remove locally-stored credentials for a remote host
  metadata      Metadata related commands
  output        Show output values from your root module
  providers     Show the providers required for this configuration
  refresh       Update the state to match remote systems
  show          Show the current state or a saved plan
  state         Advanced state management
  taint         Mark a resource instance as not fully functional
  test          Execute integration tests for Terraform modules
  untaint       Remove the 'tainted' state from a resource instance
  version       Show the current Terraform version
  workspace     Workspace management

Global options (use these before the subcommand, if any):
  -chdir=DIR    Switch to a different working directory before executing the
                given subcommand.
  -help         Show this help output, or the help for a specified subcommand.
  -version      An alias for the "version" subcommand.

Installation on mega-linter Docker image

  • Dockerfile commands :
# renovate: datasource=docker depName=alpine/terragrunt
ARG TERRAFORM_TERRAGRUNT_VERSION=1.9.8
FROM alpine/terragrunt:${TERRAFORM_TERRAGRUNT_VERSION} AS terragrunt
COPY --link --from=terragrunt /bin/terraform /usr/bin/