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In this lesson, we will:
  1. Inspect an OpenTofu configuration directory
  2. Count providers, configuration files, and resources
  3. Create local file resources
  4. Identify provider modules in specific directories

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Prerequisites

Ensure you have OpenTofu installed and accessible in your $PATH. We will work under: 
/root/opentofu-project/things-to-do
Initially, this directory contains only main.tf.
Always run opentofu init before performing other commands to download necessary provider plugins and create the .terraform folder.

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1. Counting Providers, Files, and Resources

Before running any commands, let’s answer a few questions:
QuestionAnswer
How many providers are initialized before opentofu init?0
After opentofu init, how many provider plugins are installed?1 (local provider v2.5.1)
How many .tf configuration files exist in this directory?1 (main.tf)
How many resources are defined in main.tf?2
What is the version of the local provider downloaded?2.5.1
main.tf resource blocks: 
resource "local_file" "things-to-do" {
  filename = "/root/things-to-do.txt"
  content  = "Clean my room before Christmas\nComplete the CKA Cert!"
}

resource "local_file" "more-things-to-do" {
  filename = "/root/more-things-to-do.txt"
  content  = "Learn how to play Astronomia on the guitar!"
}
The image shows a coding environment with a file explorer displaying a directory structure and a code editor with Terraform configuration files. A question about the version of a plugin for a local provider is visible on the left.

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2. Creating Local File Resources

Apply the configuration: 
cd /root/opentofu-project/things-to-do
opentofu init
opentofu apply
Confirm with yes. This will create:
  • /root/things-to-do.txt
  • /root/more-things-to-do.txt

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3. Working with a New Configuration Directory

Create or navigate to: 
/root/opentofu-project/Christmas_list
It contains two files: cyberpunk.tf and ps5.tf. Each defines a local_file resource. cyberpunk.tf 
resource "local_file" "cyberpunk" {
  filename = "/root/cyberpunk2077.txt"
  content  = "All I need for Christmas is Cyberpunk 2077!"
}
ps5.tf 
resource "local_file" "ps5" {
  filename = "/root/ps5.txt"
  content  = "All I need for a PS5!"
}
Total resources: 2
cyberpunk resource filename: /root/cyberpunk2077.txt

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3.1 Adding an Xbox Resource

Create xbox.tf in the same directory: 
resource "local_file" "xbox" {
  filename = "/root/xbox.txt"
  content  = "Wouldn't mind an Xbox either!"
}
Then run: 
cd /root/opentofu-project/Christmas_list
opentofu init
opentofu plan
opentofu apply
Confirm with yes to add /root/xbox.txt.

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4. Identifying Provider Modules

We have two provider directories to inspect:
DirectoryProvider NameSourceVersionModule Type
/root/opentofu-project/providerAlinodelinode/linode1.13.3Partner Linode module
/root/opentofu-project/providerBansiblenbering/ansible1.0.4Community Ansible module
Example snippet from providerA/required_providers: 
terraform {
  required_providers {
    linode = {
      source  = "linode/linode"
      version = "1.13.3"
    }
  }
}

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References

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