chayyccee/deploy-high-availability-web-app

Deploy a high-availability web app using CloudFormation

Deploy a high-availability web app using CloudFormation

Your company is creating an Instagram clone called Udagram. Developers pushed the latest version of their code in a zip file located in a public S3 Bucket. You have been tasked with deploying the application, along with the necessary supporting software into its matching infrastructure. This needs to be done in an automated fashion so that the infrastructure can be discarded as soon as the testing team finishes their tests and gathers their results.

Diagram

Content

1. The app folder has the website file (udagram.zip) to deploy.
2. The bash folder has the code files using to help such as utilities:
   • create-ssh-key.sh can be used to create key pair (using ssh-keygen) and save to AWS Parameter Store.
   • create.sh can be used to create an AWS CloudFormation stack in region us-east-1
   • update.sh can be used to update an existing AWS Cloudformation stack in region us-east-1
   • delete.sh can be used to delete an AWS CloudFormation stack
   • Note: These scripts are specific to a region. You can change them in the script directly or adapt the script to accept a custom region.
3. The screenshots folder has screenshots for every steps are taken.
4. The scripts folder has CloudFormation scripts:
   • iam.yml uses iam-parameters.json to deploy a stack with the role that will use to upload/download files from the bucket and get parameters from AWS Parameter Store.
   • s3.yml uses s3-parameters.json to deploy a stack with the AWS::S3 bucket that stores the website files, that is, udagram.zip
   • network.yml uses network-parameters.json to deploy a stack with the whole network to the will using in the project.
   • bastion.yml uses bastion-parameters.json to deploy a stack with a bastion host to connect the hosts with the website of a secure way.
   • server.yml uses server-parameters.json to deploy a stack with the website hosts. Also deploy these hosts using LoadBalancer, AutoScaling, and ClouWatch alarms.

Instructions

To deploy this project follow the instructions are below:

1. You need to create key pair that will use to connect to Bastion Host, in a terminal using the file bash/create-ssh-key.sh. The key pairs that will be generated. Use private key udagramBastionKey to ssh to Bastion host. Keys udagramBastionKey.pub, udagramWebappKeyPrivate, udagramWebappKey.pub will save to AWS Parameter Store.

    bash/create-ssh-key.sh

2. You need to create the s3 and iam stacks, in a terminal using the file bash/create.sh

    bash/create.sh iam-stack scripts/iam.yml scripts/iam-parameters.json
    bash/create.sh s3-stack scripts/s3.yml scripts/s3-parameters.json

3. You need to upload the website file app/udagram.zip to s3 bucket (created previously eg. s3-658942388635-bucket), in a terminal using aws cli

   aws s3 cp app/udagram.zip s3://s3-658942388635-bucket

4. You need to create the other stacks described above, in a terminal

    bash/create.sh network-stack scripts/network.yml scripts/network-parameters.json
    bash/create.sh bastion-stack scripts/bastion.yml scripts/bastion-parameters.json
    bash/create.sh server-stack scripts/server.yml scripts/server-parameters.json

You can access to the final website using this LoadBalancer link