Learning experiment leveraging Terraform to automate the infrastructure deployments & Packer to automate baking both the EC2 AMI image and Docker images. In additon pushing the docker image to ECR (AWS Elastic Container Registry) via Packer post-processor.

*Prerequisites:

• Have Terraform, Packer, & Docker installed on your machine.*
• Have an AWS account.

Directory: ./infrastructure/terraform/shared

cd ./infrastructure/terraform/shared && \
terraform init && \
terraform apply --auto-approve

Create an ./infrastructure/packer/images/variables.auto.pkrvars.hcl file

aws_account_id = "<YOUR AWS ACCOUNT ID>"
ecr_repository = "terraform-packer-docker-project"
region = "us-east-1"

Directory: ./infrastructure/packer/images

packer build -var-file="./variables.auto.pkrvars.hcl" ec2.pkr.hcl

You can alternatively build with regular Dockerfile(s) and script to tag and push to ECR. This is automated with Packer post-processors

Directory: ./infrastructure/packer/images

packer build -var-file="./variables.auto.pkrvars.hcl" docker.pkr.hcl

Since the AWS AMI is built and the Docker image has been pushed to ECR, can deploy EC2 application servers

This terraform configuration is setup for blue/green deployments. To start out only need one of the blue/green servers.

./infrastructure/terraform/application

terraform init && \
terraform apply \
-var "traffic_distribution=blue" \
-var "enable_green_env=false" \
--auto-approve

The blue-green-deployment.sh file is setup to script toggling between blue and green deployments, can reference the traffic_distribution output value and determine which was previously promoted as production servers.

• Fork the repository
• Create a free Terraform Cloud Account
  • Generate a TFE User Token
  • Create two CLI powered workspaces for terraform-shared & terraform-application
  • Update both Cloud Blocks with your own Terraform Cloud Organization name, current placeholder: <TFC ORGANIZATION HERE>
• Have an AWS Account and AWS credentials handy
• Add the following Github Actions Environment Secrets
  • AWS_ACCESS_KEY_ID
  • AWS_SECRET_ACCESS_KEY
  • AWS_ACCOUNT_ID (AWS Account ID)
  • TF_API_TOKEN (From Terraform Cloud)