sagarising / hello-world-terraform

A terraform project to deploy a simple nodejs based hello-world app.

Pre-requisite

• Install terraform v1.5.2
• Setup the aws cli credentials with default profile name.

Setup

1. Apply the remote_state terraform project. This will create s3 bucket and lock table for keeping remote state for other tf projects.

cd infra/accounts/dev/remote_state; terraform init; terraform apply

2. Apply the ecs terraform project.

cd infra/accounts/dev/ecs; terraform init; terraform apply

This will output

• URL to access the web server.
• ECR repo url where docker images should be pushed.

Development

1. Make desired code changes to src directory.
2. Run docker build

cd src; docker build -t <docker_ecr_repo_url>:<version> .

3. Docker login into the ECR repo

aws ecr get-login-password --region <region> | docker login --username AWS --password-stdin <ecr_repo_url>

4. Publish docker image

docker push <docker_ecr_repo_url>:<version>

5. Apply the ecs terraform project with the version provided in above step

cd infra/accounts/dev/ecs; terraform apply -var="release_version=<release_version>"

TODO

• Use EC2 rather than fargate to reduce infra cost
• Use terragrunt for making terraform code DRY in case new env is added.

hello-world-terraform's Issues

Use EC2 instead of Fargate

Fargate isn't included in free tier. Hence, it will cost even when the AWS account's age is less than 12 months. Better to use EC2 instance t2.micro/t3.micro as for 12 months it is free.