tf-aws-infra

• tf-aws-infra
  • Prerequisites
    • AWS CLI Setup
  • Setting Custom Variables
  • Usage

Prerequisites

Before deploying the Terraform configuration, ensure that the following prerequisites are met:

• Terraform: Install Terraform version 0.14 or higher.
• AWS CLI: Install and configure the AWS CLI with appropriate permissions.
• AWS Account: Ensure you have access to an AWS account with permissions to create networking resources (VPCs, subnets, route tables, internet gateways, etc.).
• Access to AWS environment variables: Set AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables for authentication with AWS. Alternatively, you can configure a profile using aws configure.

AWS CLI Setup

aws configure --profile profile_name

Setting Custom Variables

To customize the VPC, subnets, and other resource configurations, create a terraform_file.tfvars file or pass variables directly through the command line. Example:

vpc_cidr = "10.0.0.0/16"
public_subnets_cidrs = ["10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24"]
private_subnets_cidrs = ["10.0.4.0/24", "10.0.5.0/24", "10.0.6.0/24"]
availability_zones = ["us-east-1a", "us-east-1b", "us-east-1c"]

Usage

To apply the Terraform configurations and provision the resources:

1. Initialize Terraform: This step downloads the necessary provider plugins.

cd src/terraform
terraform init

2. Preview the infrastructure changes: This will show you the resources that will be created, modified, or destroyed.

export AWS_PROFILE=profile_name
terraform plan -var-file="terraform_file.tfvars"

3. Import SSL certificate to AWS Certificate Manager via AWS CLI

aws acm import-certificate --certificate "fileb://certificate.crt" \
      --certificate-chain "fileb://ca_bundle.crt" \
      --private-key "fileb://private.key"

4. Apply the configuration: This command creates the networking resources in AWS. Pass the -var-file flag to provide a custom terraform.tfvars file:

terraform apply -var-file="terraform_file.tfvars"

5. Destroy resources: When you’re done and wish to clean up the resources, use the destroy command.

terraform destroy -var-file="terraform_file.tfvars"