How to deploy an application to EC2 instances(with Autoscaling) using Jenkins?

Question

I have a Jenkins job and custom-built pipeline already functioning to deploy my Java application using Jboss to an EC2 server in AWS(by using the static IP of the instance). Now I plan to enable the Autoscaling feature for my EC2 instance.

What would be the best practices to make continuous deployments to these scaled EC2 instances maintaining the application's stability?

Answer 1

Here is the workflow I follow using Jenkins.

• Create a Jenkins Pipeline that does a build and pushes to Amazon S3 - In an artifact bucket
• Create a CodeDeploy application that deploys to the autoscaling group (not tag)
• Create a CodePipeline application that polls for the S3 object, and when receved triggers CodeDeploy.

The great thing about CodeDeploy when attached to autoscaling groups is it creates a lifecycle hook . Whenever a new instance is deployed to the autoscaling group it will automatically deploy the latest version of code.