Demo terraform aws infra and ECS-based app

To run

1. Create AWS account and configure AWS CLI
2. Create S3 bucket for terraform state
3. Create domain manually
4. Set bin/shared/[env].conf with variables required

Run terraform commands:

./terraform/bin/apply.sh [env] [region] [state]

State precedence

For the first run, this is the dependency sequence.

1. network
2. app

Assumptions

1. ECS base app
2. Multiple environment and region ready
3. Multiple-state setup
4. No CI/CD
5. No autoscaling
6. No monitoring
7. Nothing fancy

Possible improvements

• Use terraform modules more extensively, remove LB from ECS module. Externalize when needed.
• Remove dependency on 3rd party vpc module.
• Add declarative CI/CD pipeline.
• Move to terraform cloud for state management.
• Add terratest.
• Split db state. Add ability to run from snapshot.
• Add monitoring and alerting with CW.
• Add autoscaling.
• Move DB to Aurora.
• Externalize secrets to KMS.