AWS Infrastructure + Kubernetes Infrastructure + Application

Full VPC + EKS + ClusterAutoscaler

Nginx Ingress Controller + Ingress

Python Flask Application with UWSGI with HorizontalPodAutoscaler

Prerequisites

1. Install and configure aws-cli
2. Install kubectl
3. Install terraform
4. Install jq

Pre Deployment

1. Navigate to the following directory

cd terraform/env/perimiter81

2. Fill in all the relevant values in the variables.tfvars file

Deployment

cd terraform/env/perimiter81/

terraform init
terraform validate
terraform plan -var-file="variables.tfvars" -out terraform.plan
terraform apply terraform.plan

Post Deployment

1. Configure kubectl
   • Option one: as part of the deployment a "config" file was created in the same directory (see above). You can use it to execute kubectl commands by using the --kubeconfig
   • Option two: you can use the file mentioned in "1.a" and override/merge-to your local ~/.kube/config
   • Option three: You can execute the below command which will automatically update your ~/.kube/config file with the correct details

aws eks --region $(terraform output -raw aws_region) update-kubeconfig --name $(terraform output -raw eks_cluster_name)

2. Deploy Cluster Autoscaler

cd ../../../auto-scalers/

sed "s/PUT_ACCOUNT_ID_HERE/$(aws sts get-caller-identity | jq -r ".Account")/g" cluster/values.yaml
sed "s/PUT_CLUSTER_NAME_HERE/$(terraform output -raw eks_cluster_name)/g" cluster/templates/deployment.yaml

helm install --upgrade cluster-autoscaler cluster

cd ../ingress-nginx

# Put the correct value for the ssl cert under service.annotations in the values.yaml file
# service.beta.kubernetes.io/aws-load-balancer-ssl-cert: arn:aws:acm:us-east-1:XXXXXXXX:certificate/XXXXXX-XXXXXXX-XXXXXXX-XXXXXXXX

helm install --upgrade ingress-nginx .

3. Deploy the application

cd ../application_server

helm install --upgrade application-server application_chart

Cleanup of all the created resources

cd terraform/env/perimiter81/

terraform destroy -var-file="variables.tfvars" --auto-approve