Sample repo with input variable

It creates a VPC in AWS, you will need to specify the region (e.g eu-central-1 or another one from the list

See this page for the reference

Prerequisites

Install and configure Terraform as per official documentation

How To

Clone the repository

git clone https://github.com/dmitryuchuvatov/variables.git

Go into the directory

cd variables

Initialize Terraform

terraform init

You should see the similar output:

Initializing the backend...

Initializing provider plugins...
- Finding hashicorp/aws versions matching "~> 4.0"...
- Installing hashicorp/aws v4.66.1...
- Installed hashicorp/aws v4.66.1 (signed by HashiCorp)

Terraform has created a lock file .terraform.lock.hcl to record the provider
selections it made above. Include this file in your version control repository
so that Terraform can guarantee to make the same selections by default when
you run "terraform init" in the future.

Terraform has been successfully initialized!

You may now begin working with Terraform. Try running "terraform plan" to see
any changes that are required for your infrastructure. All Terraform commands
should now work.

If you ever set or change modules or backend configuration for Terraform,
rerun this command to reinitialize your working directory. If you forget, other
commands will detect it and remind you to do so if necessary.

Run Terraform Apply

terraform apply

When prompted, enter the desired region and hit Enter to confirm:

var.aws_region
  AWS region

  Enter a value: eu-central-1

Then, enter yes and hit Enter to apply the changes:

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following
symbols:
  + create

Terraform will perform the following actions:

  # aws_vpc.example will be created
...

Plan: 1 to add, 0 to change, 0 to destroy.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

aws_vpc.example: Creating...
aws_vpc.example: Creation complete after 2s [id=vpc-08e40fc2ff9efcff4]

Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

Verify the results and clean up

Optionally, you can check the AWS console to see if the VPC is available:

Once it's done, proceed with

terraform destroy

Than, enter the same region and hit Enter:

var.aws_region
  AWS region

  Enter a value: eu-central-1

aws_vpc.example: Refreshing state... [id=vpc-08e40fc2ff9efcff4]

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following
symbols:
  - destroy

Terraform will perform the following actions:

  # aws_vpc.example will be destroyed

Finally, enter yes hit Enter:

  Enter a value: yes

aws_vpc.example: Destroying... [id=vpc-08e40fc2ff9efcff4]
aws_vpc.example: Destruction complete after 1s

Destroy complete! Resources: 1 destroyed.

kikitux/variables-1