AWS Infrastructure with Terraform

Create Terraform modules for AWS and provision AWS Infrastructure

Create dir
############
shashanksrivastava@197nodnb23093:~$ mkdir aws-terraform
shashanksrivastava@197nodnb23093:~$ cd aws-terraform/
shashanksrivastava@197nodnb23093:~/aws-terraform$ ls
shashanksrivastava@197nodnb23093:~/aws-terraform$ mkdir ec2 s3

Create modules for s3
#################
shashanksrivastava@197nodnb23093:~/aws-terraform$ mkdir modules
shashanksrivastava@197nodnb23093:~/aws-terraform$ cd modules/
shashanksrivastava@197nodnb23093:~/aws-terraform/modules$ mkdir s3
shashanksrivastava@197nodnb23093:~/aws-terraform/modules$ cd s3/
shashanksrivastava@197nodnb23093:~/aws-terraform/modules/s3$ vim main.tf

provider "aws" {
  region  = "${var.aws_region}"
}

resource "aws_s3_bucket" "s3_bucket" {
  bucket = "${var.bucket_name}"
  acl    = "${var.bucket_acl}"

  versioning {
      enabled = "${var.versioning_enabled}"
    }

  lifecycle {
      prevent_destroy = true
    }

  tags {
    name         = "${var.bucket_name}"
    organization = "${var.organization}"
  }
}

Create vars file
###########
shashanksrivastava@197nodnb23093:~/aws-terraform/modules/s3$ vim vars.tf

variable "aws_region" {}
variable "bucket_name" {}
variable "bucket_acl" {}
variable "versioning_enabled" {}
variable "organization" {}

Create s3 bucket file
################
shashanksrivastava@197nodnb23093:~/aws-terraform$ cd s3/
shashanksrivastava@197nodnb23093:~/aws-terraform/s3$ vim main.tf

module "s3" {
  source             = "../modules/s3/"
  aws_region          = "us-east-1"
  organization       = "shashanksrinfo"
  versioning_enabled = "true"
  bucket_name        = "shashanksrinfo1"
  bucket_acl          = "private"
}

Running Terraform init
#################
shashanksrivastava@197nodnb23093:~/aws-terraform/s3$ terraform  init
Initializing modules...
- module.s3

Initializing provider plugins...
............
Terraform has been successfully initialized!

Running Terraform plan
###################
shashanksrivastava@197nodnb23093:~/aws-terraform/s3$ terraform  plan
Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.
------------------------------------------------------------------------
An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:
...........................................
Plan: 1 to add, 0 to change, 0 to destroy.

Running Terraform apply
####################
shashanksrivastava@197nodnb23093:~/aws-terraform/s3$ terraform  apply

An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:
................................................
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

module.s3.aws_s3_bucket.s3_bucket: Creating...
............... 
module.s3.aws_s3_bucket.s3_bucket: Still creating... (10s elapsed)
module.s3.aws_s3_bucket.s3_bucket: Creation complete after 17s (ID: shashanksrinfo1)

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

Create modules for EC2 
#################
shashanksrivastava@197nodnb23093:~/aws-terraform$ cd modules/
shashanksrivastava@197nodnb23093:~/aws-terraform/modules$ mkdir ec2
shashanksrivastava@197nodnb23093:~/aws-terraform/modules$ cd ec2/
shashanksrivastava@197nodnb23093:~/aws-terraform/modules/ec2$ vim main.tf

provider "aws" {
  region  = "${var.aws_region}"
}

resource "aws_instance" "instance" {
  count                       = "${var.instance_count}"
  ami                         = "${var.ami}"
  instance_type               = "${var.instance_type}"
  subnet_id                   = "${var.subnet_id}"
  vpc_security_group_ids      = ["${aws_security_group.instance.id}"]
  key_name                    = "${var.key_name}"
  associate_public_ip_address = "${var.associate_public_ip_address}"
  root_block_device {
   delete_on_termination = true
   volume_size           = "${var.instance_size}"
   volume_type           = "gp2"
  }
  tags {
   organization = "${var.organization}"
   Name = "${var.instance_name}"
  }
}

Create security group file
##################
shashanksrivastava@197nodnb23093:~/aws-terraform/modules/ec2$ vim sg.tf
resource "aws_security_group" "instance" {
 name        = "${var.sg_name}"
 description = "sg for instance"
 vpc_id      = "${var.vpc_id}"
 ingress {
   from_port        = 22
   to_port          = 22
   protocol         = "tcp"
   cidr_blocks      = ["0.0.0.0/0"]
 }
 egress {
   from_port        = 0
   to_port          = 0
   protocol         = -1
   cidr_blocks      = ["0.0.0.0/0"]
 }
 tags {
   organization = "${var.organization}"
   Name = "${var.instance_name}"
 }
}

Create vars file
###########
shashanksrivastava@197nodnb23093:~/aws-terraform/modules/ec2$ vim vars.tf
variable "aws_region" {}
variable "instance_count" {}
variable "ami" {}
variable "instance_type" {}
variable "subnet_id" {}
variable "key_name" {}
variable "associate_public_ip_address" {}
variable "instance_name" {}
variable "instance_size" {}
variable "organization" {}
variable "vpc_id" {}
variable "sg_name" {}

Create EC2 instance file
#################
shashanksrivastava@197nodnb23093:~/aws-terraform$ cd ec2/
shashanksrivastava@197nodnb23093:~/aws-terraform/ec2$ vim main.tf

module "instances" {
  source             = "../modules/ec2"
  aws_region         = "us-east-1"
  organization       = "shashanksrinfo"
  subnet_id         = "subnet-92f48cbc"
  key_name           = "shashanksrinfo"
  instance_count     = 1
  associate_public_ip_address = true
  instance_name      = "shashanksrinfo"
  instance_size      = 10
  instance_type      = "t2.micro"
  ami                = "ami-011b3ccf1bd6db744"
  vpc_id             = "vpc-92941de8"
  sg_name            = "shashanksrinfo"
}

Running Terraform init
#################
shashanksrivastava@197nodnb23093:~/aws-terraform/ec2$ terraform init
Initializing modules...
- module.instances

Initializing provider plugins...
.............
* provider.aws: version = "~> 2.4"

Terraform has been successfully initialized!

Running Terraform apply
#################
shashanksrivastava@197nodnb23093:~/aws-terraform/ec2$ terraform apply
An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  + module.instances.aws_instance.instance
...........................................    
Plan: 2 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

module.instances.aws_security_group.instance: Creating...
.............................
module.instances.aws_security_group.instance: Still creating... (10s elapsed)
module.instances.aws_security_group.instance: Creation complete after 10s
module.instances.aws_instance.instance: Creating...
.................................
module.instances.aws_instance.instance: Still creating... (10s elapsed)
module.instances.aws_instance.instance: Still creating... (20s elapsed)
module.instances.aws_instance.instance: Still creating... (30s elapsed)
module.instances.aws_instance.instance: Still creating... (40s elapsed)
module.instances.aws_instance.instance: Creation complete after 47s