Project-3: Give Your Application Auto-Deploy Superpowers

Design and Build CI/CD Pipelines that Support Continuous Delivery Processes.

Pipeline Diagram

Project Setup

1.Create and download a new key pair in AWS.

Update key pair name in the cloudformation template [backend.yml]

2.Create IAM user for programmatic access only and copy the access key id and secret access key.

You'll need these credentials to add to CircleCI configuration.

3.Add a PostgreSQL database in RDS that has public accessibility.

4.Setup CloudFront Distribution

• Choose a random string, such as kk1j287dhjppmz437
• Create a public S3 bucket with a name that combines "udapeople" and the random string, such as udapeople-kk1j287dhjppmz437.
• Manually run .circleci/files/cloudfront.yml template file locally, and use bucket name for the Workflow ID parameter.

$ cd .circleci/files 
$ aws cloudformation deploy \
--template-file cloudfront.yml \
--stack-name InitialStack\
--parameter-overrides WorkflowID=udapeople-kk1j287dhjppmz437

Once the initial stack is created, subsequent executions of the cloudfront.yml template will modify the same CloudFront distribution to make the blue-to-green switch without fail.

5.Setup - CircleCI

• Add SSH Key pair from EC2 to the CircleCI Project Settings > SSH Keys >Additional SSH Keys.

To get the actual key pair, you'll need to open the pem file in a text editor and copy the contents. Then you can paste them into Circle CI.

• Add the following environment variables to your Circle CI project by navigating to {project name} > Settings > Environment Variables.

  AWS_ACCESS_KEY_ID=(from IAM user with programmatic access)
  AWS_SECRET_ACCESS_KEY= (from IAM user with programmatic access)
  AWS_DEFAULT_REGION=(your default region in aws)
  TYPEORM_CONNECTION=postgres
  TYPEORM_MIGRATIONS_DIR=./src/migrations
  TYPEORM_ENTITIES=./src/modules/domain/**/*.entity.ts
  TYPEORM_MIGRATIONS=./src/migrations/*.ts
  TYPEORM_HOST={your postgres database hostname in RDS}
  TYPEORM_PORT=5432 (or the port from RDS if it’s different)
  TYPEORM_USERNAME={your postgres database username in RDS}
  TYPEORM_PASSWORD={your postgres database password in RDS}
  TYPEORM_DATABASE=postgres {or your postgres database name in RDS}
  

🔥 Now our pipeline is ready to go!! 🚀

we successfully reduced cost, time, and effort and increased revenue using DevOps culture with continuous delivery and faster time to clients.

To run the App using docker

$ cd util
$ docker compose up

Built With -

• Circle CI - Cloud-based CI/CD service
• Amazon AWS - Cloud services
• AWS CLI - Command-line tool for AWS
• CloudFormation - Infrastrcuture as code
• Ansible - Configuration management tool
• Prometheus - Monitoring tool