Deploy a High-availability Web Application using CloudFormation

Infrastructure Diagram

Helper Scripts

# Create or update a CloudFormation stack
$ create.sh region stack-name template-body parameters [extra-opts]

# Create all stacks needed to run the app
$ create_all.sh region

How to Deploy

Prerequisite

You will need to install and set up AWS CLI at first to run scripts.

Deploy Manually

1 Create IAM Role

$ sh create.sh [region] udagram-role role.yml role-parameters.json

This script will create an IAM role UdagramRole with S3-ReadOnly Access.

2 Create Network

$ sh create.sh [region] udagram-network network.yml network-parameters.json

This script will setup a VPC, gateways (IGW and NAT), subnets and routings.

There will be two Availability Zones, each contains

a public subnet as DMZ
a private subnet for servers

3. Deploy Web Application

$ sh create.sh [region] udagram-server servers.yml server-parameters.json

This script will create 4 servers (Ubuntu 18, t3.medium), two located in each private subnet. All servers will be in the same auto-scaling group.

4. Output the URL

aws cloudformation describe-stacks \
    --region [region] \
    --stack-name udagram-server \
    --query "Stacks[0].Outputs[?OutputKey=='WebAppURL'].OutputValue" \
    --output text

Deploy Automatically

$ sh create_all.sh [region]

Create all stacks needed to run the app and show the URL to access.

silviaclaire / deploy-web-app-using-cloudformation