AWSEKSPOC

Travel POC

This project makes use of Booking API and TravelPayouts API. Front end is developed using React and backend with Spring Boot. Resources are provisioned in AWS using Terraform.

I have created microservices for API Gateway, Flight Service, Hotel Service, IATA Service.Authentication is done via Cognito. JWT is passed to API Gateway POD and once the token is validated, the respective service is called. API Gateways provides cross cutting concerns such as logging and security. API Gateway service makes use of Spring Cloud Kubernetes,Spring Cloud Gateway . ALB can be integrated with Cognito but there are some limitations so went with API gateway pattern.

Terraform project TerraformEKSRDS creates the following resources

VPC with 2 public subnets and 2 private subnets
EKS Cluster
IAM OIDC Identity Provider
IAM roles for service account to access DynamoDB (set up access at POD level for AWS services)
MySQL DB
DynamoDB

Terraform project TerraformS3DNS creates the following resources

S3 bucket for static website hosting
IAM policy for S3
Cloud Front
SSL Certificate for the domain
Route 53 record for Cloud front

Pre-Requisites:

Cognito User Pool (User Pool Id has to be added to jwt.aws.userPoolId in Api Gateway ConfigMap)
Domain hosted at Route 53

STEPS

Register with https://rapidapi.com/tipsters/api/booking-com/ to get key for Booking API
Register with https://www.travelpayouts.com/developers/api to get key for Travel Payouts API
Substitute the keys in ConfigMaps in the respective service yaml file in the folder KubernetesManifests

Navigate to TerraformEKSRDS and execute the following command

terraform init
terraform plan
terraform apply --auto-approve

Once the resources are created, get the MySQL endpoint and substitute in ConfigMap and external name service in 01-IataService.yaml . Connect to MySQl and execute DBScript.sql to create and populate table for IATA codes
Create DNS record for Ingress ALB in Route53

Navigate to TerraformS3DNS and execute the following command

terraform init
terraform plan
terraform apply --auto-approve

Navigate to TravelServiceFrontend and execute the following command
```
npm run build
```
Final Step is applying Kubernetes manifests
```
kubectl apply -f KubernetesManifests/.
```
Optionaly install kube-prometheus-stack helm chart

Kube Prometheus Stack:

helm repo add monitoring https://prometheus-community.github.io/helm-charts
helm repo update
helm pull monitoring/kube-prometheus-stack --untar=true

Create customvalues.yaml with the following values

grafana: 
  adminPassword: admin
  service:
    type: NodePort

GitHub

View Github