ECS + Terraform

This repo contains a set of Terraform modules for provisioning an AWS ECS cluster and registering services with it.

If you want to use this, basically replace services.tf with services which describe containers you actually want to run.

There's still a handful of TODO comments, and it may not be 100% idiomatic Terraform or AWS.

Right now this provisions everything, including its own VPC and related networking accoutrements. It does not handle setting up a Docker Registry. It does not do anything about attaching other AWS services (e.g. RDS) to a container.

Deploying

In addition to the Terraform modules, there is a script for doing deployments to ECS.

To execute a deployment:

$ # Push a container to your docker registry
$ python deploy/ecs-deploy.py deploy --cluster=<cluster> --service=<service> --image=<image>

It will then update the image being used by that service's task. ECS will handle updating the running containers. (Be aware that you must have as many EC2 instances in the cluster as 2x the number of running tasks for your service.)