Django-TF-AWS: Deploying Django application to AWS ECS using Terraform

A basic Django web application hosted on AWS. Underlying IaC in Terraform

Sets up the following AWS infrastructure:

• Networking:
  • VPC
  • Public and private subnets
  • Routing tables
  • Internet Gateway
  • Key Pairs
• Security Groups
• Load Balancers, Listeners, and Target Groups
• IAM Roles and Policies
• ECS:
  • Task Definition (with multiple containers)
  • Cluster
  • Service
• Launch Config and Auto Scaling Group
• RDS
• Health Checks and Logs

Instructions

1. Install Terraform

2. Sign up for an AWS account

3. Create two ECR repositories, django-app and nginx.

4. Fork/Clone

5. Build the Django and Nginx Docker images and push them up to ECR:

   $ cd app
   $ docker build -t <AWS_ACCOUNT_ID>.dkr.ecr.us-west-1.amazonaws.com/django-app:latest .
   $ docker push <AWS_ACCOUNT_ID>.dkr.ecr.us-west-1.amazonaws.com/django-app:latest
   $ cd ..
   
   $ cd nginx
   $ docker build -t <AWS_ACCOUNT_ID>.dkr.ecr.us-west-1.amazonaws.com/nginx:latest .
   $ docker push <AWS_ACCOUNT_ID>.dkr.ecr.us-west-1.amazonaws.com/nginx:latest
   $ cd ..

6. Update the variables in terraform/variables.tf.

7. Set the following environment variables, init Terraform, create the infrastructure:

   $ cd terraform
   $ export AWS_ACCESS_KEY_ID="YOUR_AWS_ACCESS_KEY_ID"
   $ export AWS_SECRET_ACCESS_KEY="YOUR_AWS_SECRET_ACCESS_KEY"
   
   $ terraform init
   $ terraform apply
   $ cd ..

8. Terraform will output an ALB domain. Create a CNAME record for this domain for the value in the allowed_hosts variable.

9. Open the EC2 instances overview page in AWS. Use ssh ec2-user@<ip> to connect to the instances until you find one for which docker ps contains the Django container. Run docker exec -it <container ID> python manage.py migrate.

10. Now you can open https://your.domain.com/admin. Note that http:// won't work.

11. You can also run the following script to bump the Task Definition and update the Service:

    $ cd deploy
    $ python update-ecs.py --cluster=production-cluster --service=production-service