WebAppDeploymnetUsingAWS

DevOps - AWS

Deploying web app on AWS using DevOps Principles

Summary

User bill Tracking application build with spring boot, maven, REST APIs and deployed on AWS using CI/CD.

• EC2 instances are built on a custom AMI using Hashicorp packer
• Setting up the network and creation of resources is automated with AWS Cloud formation, aws cli and shell scripts
• Instances are autoscaled with ELB to handle the web traffic
• Created a serverless application to provide billing history functionality using SES and SNS
• The application is deployed with Circle CI and AWS Code Deploy

Architecture Diagram

Tools and Technologies

Infrastructure	VPC, ELB, EC2, RDS, Lambda, DynamoDB, Route53, Cloud formation, Shell, Packer
Webapp	Java, Spring Boot, Spring Security, MySQL, JPA, Maven
CI/CD	Circle CI, AWS Code Deploy, Shell Script
Alerting and logging	statsd, Cloud Watch, SNS, SES, Lambda
Security	SSL/TLS, Database Encryption

Infrastructure-setup

• Create the networking setup using cloud formation and aws cli
• Create the required IAM policies and users
• Setup Load Balancers, EC2, Route53, DynamoDB, SNS, SES, RDS

Webapp

• User bill Tracking System Web application is developed using Java Spring Boot framework that uses the REST architecture
• Secured the application with Spring Security Basic authentication to retrieve user information
• Storing the images of Book covers in S3 Bucket
• Implemented AWS SQS,SNS and polling mechanism to send notification

CI/CD

• Created a webhook from github to CircleCI
• Bootstrapped the docker container in CircleCI to run the unit tests, integration tests and generate the artifact
• The artifact generated is stored S3 bucket and deployed to an autoscaling group using aws code deploy.

Auto scaling groups

• Created auto scaling groups to scale to the application to handle the webtraffic and keep the costs low when traffic is low
• Created cloud watch alarms to scale up and scale down the EC2 instances

Serverless computing

• Created a pub/sub system with SNS and lambda function
• When the user request for a due bills link from the system, a message is pushed into SQS.
• The thread is used which seprately pulls data from sqs and sends to sns topic
• The lambda function checks for the entry of the email in DynamoDB if it has no entry then it inserts a record with a TTL of 60 minutes and sends the notification to the user with SES
• DynamoDB stores TTL data from the user to ensure request served only once per hour

Packer

• Implemented CI to build out an AMI and share it between organization on AWS
• Created provisioners and bootstrapped the EC2 instance with required tools like Tomcat, JAVA, Python

Refer this Repositories for more details:

• Billing and Invoicing Web Services
• Amazon Machine Image
• Serverless Computing AWS Lambda
• AWS Cloud Infrastrcutres Automation

Author

Name	Email Address
Dhaval Suthar	suthar.d@husky.neu.edu