Infrastructure AWS

Experimental attempt at provisioning the supporting infrastructure in AWS for Logactaesque using Terraform

As of December 2021 this has been paused in an incomplete state. Parts 1 and 2 function as expected.

Built using this Udemy course on Fargate/AWS/Terraform

Prerequisites

• An AWS account
• The AWS CLI tool
• An AWS IAM account with relevant privileges to construct AWS infrastructural components.
• AWS Access and Secret Key configured locally (e.g. for Linux, this would sit under ~/.aws)
• Terraform (this work used version v0.14.8)
• An AWS S3 bucket to hold terraform state (presently logactaesque-terraform-state-development)

Project Structure (Work-in Progress)

The project comprises three folders:

1. Supporting infrastructure
2. Platform
3. Application

1-infrastructure

This builds what is a development environment inside region eu-west-1 comprising

• VPC
• A single public subnet
• A single private subnet
• Corresponding public and private route tables
• A NAT gateway for instances in private subnet to connect to internet but prevent the internet from initiating a connection with those instances.
• An AWS internet gateway that allows communication between VPC and internet

Supporting commands to build the (run from the project folder 1-infrastructure) are as follows:

Initialise Terraform and state management for the project:

terraform init -backend-config="infrastructure-dev.config" 

See what will be applied by Terraform:

terraform plan -var-file="development.tfvars"

To apply the changes:

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

To see and subsequently teardown changes:

terraform plan -destroy -var-file="development.tfvars"
terraform destroy -var-file="development.tfvars"

2-platform

Supporting commands to build the platform should be run from the project folder 2-platform

terraform init -backend-config="platform-dev.config"
terraform plan -var-file="development.tfvars"
terraform apply -var-file="development.tfvars"

3-application

Supporting commands to build the application layer should be run from the project folder 3-application

terraform init -backend-config="application-dev.config"
# terraform plan -var-file="development.tfvars"
# terraform apply -var-file="development.tfvars"