CI/CD AWS deployment following the Blue|Green strategy

Stack

• GitHub
• CircleCI
• AWS (EC2, Cloudformation, Cloudfront, S3)
• Ansible
• Prometheus (+ AlertManager)

Overview

Why CI/CD?

• Increase revenue
• Reduce cost
• Protect revenue
• Avoid cost

Prerequise

• CircleCI account
• AWS account

Deploy

Manually create an empty S3 bucket that is supposed to have the green version of application and deploy the cloudfront infrastructure associated thanks to the aws-manual-setup folder.

Start to follow the repository from CircleCI. CircleCI will create a webhook in Github that will automatically trigger the CI/CD on each commit. Continuous Deployment is launched and will update existing infrastructure as shown above.

Prometheus Monitoring Server is set up manually thanks to these very good articles:

• Set up Prometheus Server on EC2
• Set up the prometheus node exporter service on the EC2 instance to monitor
• Configure Prometheus for AWS Service Discovery
• Install and configure AlertManager