AWS Fargate Rolling Update

Sample app showing how to configure rolling update in AWS Fargate.

There are introduced some of the tricks to increase deployment speed base on Nathan Peck's article - Speeding up Amazon ECS container deployments.

Setup

Prerequisites

• .NET Core SDK 3.1
• Docker
• Powershell Core

Required variables to be set

deploy.ps1

• deployBucketName -> name of the Amazon S3 Bucket used to deploy AWS CloudFormation stacks.
• vpcId -> Id of the Amazon VPC where resources will be placed.

deploy-rolling-app.ps1

• subnetAId, subnetBId, subnetCId -> Ids of the Subnets where resources will be placed. Three subnets are used to achieve High Availability using three Availability Zones.

Deployment

cd Deploy
deploy.ps1 $ImageVersion

ImageVersion is used in AWS ECR and needs to be incremented when you want to deploy new version of the image.

Project structure

AWS CloudFormation stacks

All AWS CloudFormation stacks are located in the Environment folder.

ecs-deploy-net

File: Environment/network.yaml

Stack containing SecurityGroups for ALB and Fargate.

ecs-deploy-rolling-repo

File: Environment/rolling-repo.yaml

Stack containing ECR Repository.

ecs-deploy-rolling-app

File: EcsFargateRollingUpdate/application.yaml

Stack containing all resources connected to ALB and AWS Fargate.

Deployment scripts

All deployment scripts are located in the Deploy folder.

Code

Project EcsFargateRollingUpdate contains ASP.NET core API and Docker container definition.