Introduction

High level architecture

1. Jenkins server
2. Ansible script

Continuous integration/Continuous Deployment

Continuous integration is a DevOps software development practice where developers regularly merge their code changes into a central repository, after which automated builds and tests are run

Continuous deployment is a software development practice where code changes are automatically prepared for a release and deployed to production.

Scenarios

Code change triggering a deployment

What to expect?

The commit triggers a job in Jenkins to run test. Once passed, it will trigger a separate downstream task to deploy the application to all the instances using a Ansible playbook

Add security group to ALB to restrict access to Cloudfront origin

What to expect?

Access to the web application is restricted to cloudfront endpoints

Changing configuration of infrastructure

What to expect?

The Jenkins job will pull in the latest cloudformation template to update the minimum number of instance to 2