Terraform Example for creating simple AWS Resource

• Service: What cloud provider is offering you
• Resource: Anything created using Service

Setup Terraform DEV Environment

• Install Terraform
• Install Visual Studio Code
• Install Terraform Extension into Visual Studio Code

Manual: Create a VPC in oregon Region

Terraform: Create a VPC in oregon Region

• Create a new directory hello-tf as folder is input to terraform
• Create a new file called as main.tf
• To create resources in aws, use aws provider. Provider syntax is

provider 'provider type' {
    arg1  'value1'
    ...
    ...
    argn  'valuen'
}

• Using The above syntax and the documentation over here, lets fill the aws provider

provider "aws" {
    access_key = "<ACCESS-KEY>"
    secret_key = "<SECRET-KEY>"
    region = "us-west-2"
}

• Note: Inputs in Terraform are called as arguments and outputs are called as attributes.

• Now we need to create a VPC Resource. Search the Resources in Documentation page or just google ‘terraform resource <cloud> <resource>’

• Resource Syntax is

resource "type" "name" {
    arg1  'value1'
    ...
    ...
    argn  'valuen'
}

• Lets add the VPC resource details to existing main.tf file

provider "aws" {
    access_key = "<ACCESS-KEY>"
    secret_key = "<SECRET-KEY>"
    region = "us-west-2"
}

resource "aws_vpc" "myvpc" {
    cidr_block = "192.168.0.0/16"

    tags = {
        "Name" = "from-tf"
    }
}

• Now to execute this terraform tempalte, Launch Powershell in the directory where terraform template is written

terraform init .
terraform validate .
terraform apply .

• Once you are done resource can be removed using

terraform destroy .