OpenTofu

Introduction

OpenTofu is an infrastructure as code tool that lets you define both cloud and on-prem resources in human-readable configuration files that you can version, reuse, and share. You can then use a consistent workflow to provision and manage all of your infrastructure throughout its lifecycle. OpenTofu can manage low-level components like compute, storage, and networking resources, as well as high-level components like DNS entries and SaaS features.

Installing OpenTofu

Ubuntu & Debian

# Download the installer script:
curl --proto '=https' --tlsv1.2 -fsSL https://get.opentofu.org/install-opentofu.sh -o install-opentofu.sh
# Alternatively: wget --secure-protocol=TLSv1_2 --https-only https://get.opentofu.org/install-opentofu.sh -O install-opentofu.sh

# Give it execution permissions:
chmod +x install-opentofu.sh

# Please inspect the downloaded script

# Run the installer:
./install-opentofu.sh --install-method deb

# Remove the installer:
rm -f install-opentofu.sh

MacOS

brew update
brew install opentofu

CLI Usage

tofu login
tofu logout
tofu plan
tofu apply
tofu console
tofu fmt
tofu validate

Usage: tofu [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 OpenTofu 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 OpenTofu modules
  graph         Generate a Graphviz graph of the steps in an operation
  import        Associate existing infrastructure with a OpenTofu 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
  untaint       Remove the 'tainted' state from a resource instance
  version       Show the current OpenTofu 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.

Reference

• https://opentofu.org/
• https://opentofu.org/docs/

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