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Terraform

This directory focuses on terraforming all the AWS cloud services that are used throughout the Railway Tracker application.

Installation

Navigate to the project directory:

cd terraform

Usage

The main script to create AWS cloud services through terraform is main.tf. You can run it with the following command:

To initialise:

terraform init

To create the services:

terraform plan
terraform apply

The apply command will prompt the user to enter yes to confirm the creation of the services. The services will then be created on AWS unless an error with any credentials has occurred.

To destroy:

terraform destroy

Terraformed AWS services:

  • RDS - database
  • Lambda - to run the archive process, scheduled for 9am everyday.
  • Lambda - to run the RealTimeTrains pipeline, scheduled for 12am everyday.
  • Lambda - to run the NationalRail incident pipeline, scheduled for every 5 minutes.
  • Lambda - to run the PDF report generation pipeline, scheduled for 6am everyday.
  • S3 bucket - long term storage to hold PDF summary reports.
  • ECS service - to run the dashboard.

Configuration

Before running the script, you need to set up your AWS credentials. Create a new file called .terraform.tfvars in the terraform directory and add the following lines, with your actual AWS keys and database details:

AWS_ACCESS_KEY=your_aws_access_key
AWS_SECRET_KEY=your_aws_secret_key

C11_VPC=your_vpc

DB_USERNAME=your_db_username
DB_PASSWORD=your_db_password

DB_NAME=your_db_name
DB_IP=your_db_host_ip_address
DB_PORT=your_db_port

REALTIME_USERNAME=your_realtime_username
REALTIME_PASSWORD=your_realtime_password

NATIONAL_RAIL_API_KEY=your_nation_rail_key

SOURCE_EMAIL=your_email
S3_BUCKET_NAME=s3_bucket_name

The script will automatically load the AWS keys and database details from this file.