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Building Serverless Container Applications
using AWS Fargate and CDK
Benson Kwong
Solution Architect
AWS
Kwunhok Chan
Solution Architect
AWS

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Agenda
Introduction of AWS Fargate
Deploying a Simple App using AWS Fargate
Networking Lunch (12:30pm – 1:45pm)
Introduction of AWS Cloud Development Kit (CDK)
Provisioning and Deploying the App using AWS CDK
Q&A

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What to Expect
- Docker containers
- Amazon Elastic Container Service (Amazon ECS)
- AWS Fargate
- AWS Cloud Development Kit (CDK)
- AWS CloudFormation
- AWS Cloud9

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We Expect You Have…
- Knowledge of Containers, Docker, IDE, Infrastructure as Code
- Basic-level understanding of programming
- An AWS Account
- Your own laptop

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A container is an atomic, self-contained package of
software that includes everything it needs to run (code,
runtime, libraries, packages, etc.)
A popular, widely used container platform with a suite of
open-source tools and public registry is Docker
More on that here: https://docker.com

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Amazon ECS Amazon EKS AWS Fargate for ECS AWS Fargate for EKS
(on the roadmap)
Managed containers on AWS

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Managed container services
Choose your orchestration tool1
Choose your launch type2
ECS EKS
EC2 Fargate EC2 Fargate
Deploying to AWS managed container services

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*For distributed state management
Availability zone 1 Availability zone 2 Availability zone 3
Amazon ECS: Cluster management as a hosted service
Scheduling and orchestration
Cluster manager* Placement engine

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AWS Fargate

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Without Fargate, you end up managing more than just containers
EC2 Instance
ECS
Agent
Docker
Agent
OS

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- Patching and Upgrading OS, agents, etc.
- Scaling the instance fleet for optimal utilization

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Run Serverless
Containers with
Fargate

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Fully managed container environment
with AWS ECS + Fargate
Bring existing code Production ready Powerful integrations
No changes required of existing
code, works with existing
workflows and microservices
built on Amazon ECS
ISO, PCI, HIPAA, SOC compliant.
Launch ten or tens of thousands
of containers in seconds in 9
global regions (+7 in 2018)
Native AWS integrations for
networking, security, CICD,
monitoring, and tracing
Fargate runs tens of millions of containers for AWS customers every week

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Services Tasks
Fargate launch type: You're responsible for…
Container instances

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Amazon ECS Constructs
Define application container(s):
• Image URL,
• CPU & memory requirements,
• and so on
register
Task Definition
create
Cluster
run
Task
Running instantiation
of a task definition
create
Service
• Maintain desired number of running tasks
• Integrated with Elastic Load Balancing
• Unhealthy tasks automatically replaced
Elastic Load
Balancing
• Infrastructure isolation boundary
• IAM permissions boundary

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Task Definition
Instructions used by Amazon ECS to
launch containers
JSON template
Used for tasks and services
Maps to docker run parameters
{
"family": "sample-fargate",
"networkMode": "awsvpc",
"containerDefinitions": [
{
"name": "fargate-app",
"image": "httpd:2.4",
"portMappings": [
{
"containerPort": 80,
"hostPort": 80,
"protocol": "tcp”
} ],
"essential": true,
"entryPoint": [ "sh", "-c" ],
"command": [
"/bin/sh –c "echo ‘<html><head>
]
}
],
"requiresCompatibilities": [ "FARGATE" ],
"cpu": "256",
"memory": "512"
}

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Architecture
Clients
AWS Cloud
VPC
Availability Zone
Public subnet
Internet gateway Elastic Load Balancer Elastic network
interface
Task
Fargate Tasks

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AWS Cloud9
Cloud-based IDE that
lets you write, run,
and debug code

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Logistics
Instructions:
http://bit.ly/2kRTQGI
Raise your hand if you have any questions. High-five your neighbors,
and have fun!

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AWS Cloud Development Kit (AWS CDK)
A multi-language software development framework for modeling cloud
infrastructure as reusable components
AWS CloudFormation

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AWS Cloud Development Kit (AWS CDK)
The big picture—from AWS CDK app to provisioned infrastructure

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AWS Cloud Development Kit (AWS CDK)
AWS Construct Library
Framework CLI
CDK Application
Stack(s)
ConstructConstruct
Core Framework AWS CDK CLI
Serverless
Containers CI/CD
Application Integration / Foundational
Autoscaling
Main components

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Code Snippet

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30. Thank you!
© 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Benson Kwong
bkkwong@amazon.com

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