TERRAFORM

Create, Change, and Orchestrate AWS Infrastructure with Terraform

• Create a terraform file for AWS setting like below

variable "region" {}

provider "aws" {

  region = "${var.region}"

}

terraform {

  backend "s3" {

    bucket = "sspucket"

    key    = "root/terraform.tfstate"

    region = "us-east-1"

  }

}

Above is the main file, we are telling to terraform, that out cloud provider is AWS.

• Create a main.tf file for creating infrastructure.

module "aws_public_vpc" {

  source = "github.com/terraform-community-modules/tf_aws_vpc"

  name = "SSP VPC"

  cidr = "${var.public_cidr}"

  public_subnets = ["172.29.4.0/24", "172.29.5.0/24"]

  enable_nat_gateway = "${var.aws_enable_nat_gateway}"

  enable_dns_support = "${var.aws_enable_dns_support}"

  azs      = ["us-east-1a", "us-east-1b"]

  tags {

    "Environment" = "developers"

  }

}

// Ouputs of netwoking

output "vpc_id" {

 value = "${module.aws_vpc.vpc_id}"

}

Above file is used to create a VPC with Public IP and print the output with all values.

Terraform Commands:

• terraform get
  Used to download the modules, that we used in main.tf file. For ex:- aws_public_vpc
• terraform init
  Used to initiate  (Initial configuration of the requested backend "s3")
• terraform plan
  Will actually tells, what is going to create in AWS.
• terraform apply
  Will apply the changes finally and create the infrastructure, that is mentioned in the .tf file.