Liquibase SRE Homework

Please clone this repo. Do not fork unless you want others to potentially see your work.

Please ask questions. You can email me at jake@liquibase.com. I anticipated 3-4 hours for this project, so please get as far as you can in that timeframe.

The assignment is to build the infrastructure, deploy the app, and put it together in a pipeline.

Please create a NOTES.md with your thought process, troubleshooting, and solutions.

Task 1 - Infrastructure Resources

The infrastructure should be written as code. Please create a terraform module that will create the following resources in the AWS free tier:

• Elastic Load Balancer
• EC2 Instance
• Postgres RDS Database
• Any required security groups

Infrastructure Requirements

• The load balancer should only allow access to port 80.
• The EC2 instance should only allow access from the load balancer
• The database should only allow access from the EC2 instance
• We should be alerted if the ELB health check is not passing.

Task 2 - Application

The application is a simple to-do list app. There are bugs that need to be fixed:

1. The Dockerfile for the api (todo-api) is inefficient. Convert it to a multi-stage docker build and make it as efficient/small as possible. If done correctly the final image should be < 300 MB.
2. The docker-compose file in the root of the project has 2 bugs. Fix them. You should be able to run a docker-compose up to start the application. If the application is working you should be able to browse to http://localhost and create a to-do list.

Task 3 - Application Deployment

Deploy your docker containers to the EC2 instance created above.

Task 4 - Production Database

• The database is currently a local postgres docker container. This is fine for local development, but not suitable for production. Make any necessary changes required to use the RDS Database you created instead.

API Config

Many of the APIs configuration options can be found in todo-api/src/main.ts.

The API Expects a Postgres Database to be running. The expected properties of this DB can be found in todo-api/src/database/database.providers.ts

Client Config

The Client Application's configurations can be found at todo-client/src/environments/environment.**.ts.

Task 5 - Pipeline

Create a Github Actions pipeline that does the following:

• On commits to the master branch, apply any terraform changes and then re-deploy the updated app.