CDK EKS Blueprints Sample

With EKS Blueprints, you can create EKS clusters that are fully bootstrapped with the operational software that is needed to deploy and operate workloads.

You can create an EKS cluster with eksctl, kops and CDK, but many manual commands are required for operational software and add-on such as ClusterAutoScaler(CA), AwsLoadBalancerController, and MetricsServer. With EKS Blueprints, you can configure operational softwares with only cdk deploy at a time.

Prerequisites

npm install -g aws-cdk@2.20.0

# install packages in the root folder
npm install
cdk bootstrap

Use the cdk command-line toolkit to interact with your project:

• cdk deploy: deploys your app into an AWS account
• cdk synth: synthesizes an AWS CloudFormation template for your app
• cdk diff: compares your app with the deployed stack
• cdk watch: deployment every time a file change is detected

Time To Complete

Stack	Time
VPC, EKS cluster, Add-on	23m
Build	1m
Deploy(including ALB)	3m
Total	27m

Install

Step 1: VPC, EKS cluster, and add-on with Blueprints

cd ../blueprints
cdk deploy
# or cdk deploy -c stage=dev

blueprints/bin/index.ts, blueprints/lib/cluster-config.ts

Outputs:
eks-blueprint-local.Cluster = eks-blueprint-local
eks-blueprint-local.ClusterArn = arn:aws:eks:us-east-1:123456789012:cluster/eks-blueprint-local
eks-blueprint-local.ClusterCertificateAuthorityData = xxxxxxxx
eks-blueprint-local.ClusterEncryptionConfigKeyArn = 
eks-blueprint-local.ClusterEndpoint = https://123456789012.gr7.us-east-1.eks.amazonaws.com
eks-blueprint-local.ClusterName = eks-blueprint-local
eks-blueprint-local.ClusterSecurityGroupId = sg-0123456789abc
eks-blueprint-local.VPC = vpc-0123456789abc
eks-blueprint-local.eksclusterConfigCommand515C0544 = aws eks update-kubeconfig --name eks-blueprint-local --region us-east-1 --role-arn arn:aws:iam::123456789012:role/eks-blueprint-local-iamrole10180D71-D83FQPH1BRW3
eks-blueprint-local.eksclusterGetTokenCommand3C33A2A5 = aws eks get-token --cluster-name eks-blueprint-local --region us-east-1 --role-arn arn:aws:iam::123456789012:role/eks-blueprint-local-iamrole10180D71-D83FQPH1BRW3

Pods

https://k9scli.io/topics/install/

Services

eksctl create iamidentitymapping --cluster <cluster-name> --arn arn:aws:iam::<account-id>:role/<role-name> --group system:masters --username admin --region us-east-1

If you want to create an EKS cluster with an Existing VPC, refer to the ExistingVPC.md page.

Step 2: Kubernetes Dashboard

kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.5.1/aio/deploy/recommended.yaml

kubectl apply -f k8s-dabboard/eks-admin-service-account.yaml

kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep eks-admin | awk '{print $1}')

kubectl proxy

Dashboard Login

Step 3: Build Sample RESTful API

Create an ECR for sample RESTful API:

REGION=$(aws configure get default.region)
aws ecr create-repository --repository-name sample-rest-api --region ${REGION}

Build and push to ECR:

cd app

REGION=$(aws configure get default.region)
ACCOUNT_ID=$(aws sts get-caller-identity --query Account --output text)

echo "ACCOUNT_ID: $ACCOUNT_ID"
echo "REGION: $REGION"

docker build -t sample-rest-api .
docker tag sample-rest-api:latest ${ACCOUNT_ID}.dkr.ecr.${REGION}.amazonaws.com/sample-rest-api:latest
aws ecr get-login-password --region ${REGION} | docker login --username AWS --password-stdin ${ACCOUNT_ID}.dkr.ecr.${REGION}.amazonaws.com
docker push ${ACCOUNT_ID}.dkr.ecr.${REGION}.amazonaws.com/sample-rest-api:latest

Step 4: Deploy Sample RESTful API

Create a YAML file for K8s Deployment, Service, HorizontalPodAutoscaler, and Ingress using a template file.

sed -e "s|<account-id>|${ACCOUNT_ID}|g" sample-rest-api-template.yaml | sed -e "s|<region>|${REGION}|g" > sample-rest-api.yaml
cat sample-rest-api.yaml
kubectl apply -f sample-rest-api.yaml

app/sample-rest-api-template.yaml

Destroy

cd blueprints
cdk destroy

Reference

• Blueprints Roadmap

• https://github.com/aws-quickstart/eks-cdk-blueprints

• https://aws-quickstart.github.io/eks-cdk-blueprints

Link

• https://github.com/DevSecOpsSamples/aws-container

• https://github.com/DevSecOpsSamples/cdk-eks