AWS Network Terraform Project

This project uses Terraform to provision and manage AWS infrastructure. The infrastructure is divided into modules for better organization and reusability.

Project Structure

aws-network-terraform/
├── modules/
│   ├── vpc/
│   │   ├── main.tf
│   │   ├── variables.tf
│   │   ├── outputs.tf
│   ├── subnet/
│   │   ├── main.tf
│   │   ├── variables.tf
│   │   ├── outputs.tf
│   ├── internet-gateway/
│   │   ├── main.tf
│   │   ├── variables.tf
│   │   ├── outputs.tf
│   ├── nat-gateway/
│   │   ├── main.tf
│   │   ├── variables.tf
│   │   ├── outputs.tf
│   ├── route-table/
│   │   ├── main.tf
│   │   ├── variables.tf
│   │   ├── outputs.tf
│   ├── ec2/
│   │   ├── main.tf
│   │   ├── variables.tf
│   │   ├── outputs.tf
│   ├── security-group/
│   │   ├── main.tf
│   │   ├── variables.tf
│   │   ├── outputs.tf
├── main.tf
├── variables.tf
├── outputs.tf
├── terraform.tfvars
├── backend.tf
├── .gitignore

Modules

VPC Module

• main.tf: Defines the VPC resource.
• variables.tf: Declares the variables used in the VPC module.
• outputs.tf: Outputs the VPC ID.

Subnet Module

• main.tf: Defines the public and private subnet resources.
• variables.tf: Declares the variables used in the subnet module.
• outputs.tf: Outputs the subnet IDs.

Internet Gateway Module

• main.tf: Defines the Internet Gateway resource.
• variables.tf: Declares the variables used in the Internet Gateway module.
• outputs.tf: Outputs the Internet Gateway ID.

NAT Gateway Module

• main.tf: Defines the NAT Gateway resource.
• variables.tf: Declares the variables used in the NAT Gateway module.
• outputs.tf: Outputs the NAT Gateway ID.

Route Table Module

• main.tf: Defines the Route Table resource and its association.
• variables.tf: Declares the variables used in the Route Table module.
• outputs.tf: Outputs the Route Table ID.

EC2 Module

• main.tf: Defines the public and private EC2 instance resources.
• variables.tf: Declares the variables used in the EC2 module.
• outputs.tf: Outputs the EC2 instance IDs and public IP.

Security Group Module

• main.tf: Defines the security group resources.
• variables.tf: Declares the variables used in the Security Group module.
• outputs.tf: Outputs the security group IDs.

Root Configuration

main.tf

The root main.tf file uses the modules to provision the infrastructure.

variables.tf

The root variables.tf file declares the variables used in the root configuration.

outputs.tf

The root outputs.tf file outputs the IDs and other information from the modules.

terraform.tfvars

The terraform.tfvars file contains the values for the variables.

backend.tf

The backend.tf file configures the remote backend for storing the Terraform state.

.gitignore

The .gitignore file specifies files and directories to be ignored by Git.

Usage

1. Initialize the project:

   terraform init

2. Plan the changes:

   terraform plan

3. Apply the changes:

   terraform apply

Variables

The following variables need to be defined in terraform.tfvars:

• region: AWS region where the resources will be deployed.
• availability_zones: List of availability zones to deploy resources.
• vpc_cidr: CIDR block for the VPC.
• public_subnet_cidr: CIDR block for the public subnet.
• private_subnet_cidr: CIDR block for the private subnet.
• key_name: Key pair for EC2 instances.
• instance_type: EC2 instance type.
• ami: AMI ID for EC2 instances.
• security_groups: Map of security groups with ingress rules.

Outputs

The following outputs are available:

• vpc_id: The ID of the VPC.
• public_subnet_id: The ID of the public subnet.
• private_subnet_id: The ID of the private subnet.
• public_instance_id: The ID of the public EC2 instance.
• public_instance_public_ip: The public IP of the public EC2 instance.
• private_instance_id: The ID of the private EC2 instance.
• security_group_ids: The security group IDs for both public and private instances.