Set of projects/Terraform scripts to provision environment for a sample node.js todo app which can be found at https://github.com/waiyaki/postgres-express-node-tutorial

Limitations:

• Implementation is using "free-tier" EC2 / RDS instances
• Terraform is used for bringing AWS components up
• Docker is used as a tool for provisioning the AMI
• Following terraform modules are used:
  • https://github.com/paybyphone/terraform_aws_vpc
  • https://github.com/paybyphone/terraform_aws_alb
  • https://github.com/paybyphone/terraform_aws_asg
  • https://www.terraform.io/docs/providers/aws/r/db_instance.html

Notes: Repository consists of three projects:

• sample node.js todo app (PEN) - cloned from https://github.com/waiyaki/postgres-express-node-tutorial and modified a bit:
  • read config variables from environment variables
  • expose Swagger API docs (only couple of endpoints annotated)
  • dockerizied
• terraform project (TFCode) to provision stand-alone EC2 instance (with PEN application deployed as docker container) and RDS DB
  • needed to ensure that application works before creating an AMI image
• terraform project (TFASG) to provision "production ready" infrastructure which consist of autoscaling group and load balancer

How to make it work:

• download all projects locally
• open PEN folder
• run 'npm install'
• run 'npm install --save sequelize pg pg-hstore'
• run 'docker build todos --t <yourname_at_docker.io>/vbdemo'
• run 'docker login' and login to your docker hub account
• run 'docker push <yourname_at_docker.io>/vbdemo:latest'
• review and update /shared/client_cloud_config.template file in both TF projects to use your name in the line 'docker pull <yourname_at_docker.io>/vbdemo
• install terraform on EC2 instance in AWS [optional]
• open TFCode folder
• run 'terraform plan'
• run 'terraform apply'
• confirm that EC2 was created properly (navigate to port 8000/api-docs)
• create AMI out of the EC2 instance and take note of its image_id
• open TFASG folder
• update main.tf aws_launch_configuration to use new image_id
• run 'terraform plan'
• run 'terraform apply'
• confirm that environment setup properly by checking <load_balancer_public_URL>:8000/api-docs

P.S. I setup CNAME pbf.tripletee.com to point to ELB URL http://tf-lb-009624fd4c3474bdc9c5bfdbf1-2106718005.us-west-2.elb.amazonaws.com