DevOps Classroom Series – 07/Jan/2020 – Terraform

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 Preview

Manual: Create a VPC in oregon Region

Preview Preview

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 .

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