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_cdk-eks's Introduction

CDK EKS Sample

Quality Gate Status Lines of Code

EKS sample project with CDK.

Table of Contents

  1. VPC
  2. EKS cluster
  3. EKS nodegroup
  4. Build
  5. Deploy

Prerequisites

npm install -g [email protected]

# 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

CDK Stack

Stack Time
1 VPC 4m
2 EKS cluster 13m
3 EKS nodegroups 10m
4 Deploy(including ALB) 4m
Total 31m

Install

Step 1: VPC

The VPC ID will be saved into the SSM Parameter Store to refer from other stacks.

Parameter Name: /cdk-eks/vpc-id

Use the -c vpcId context parameter to use the existing VPC.

cd vpc
cdk deploy

vpc/lib/vpc-stack.ts

Step 2: EKS cluster

cd ../eks-cluster-nodegroup
cdk deploy 

# or define your VPC id with context parameter
cdk deploy -c vpcId=<vpc-id>

eks-cluster/lib/cluster-stack.ts

SSM parameter:

  • /cdk-eks/vpc-id

Cluster Name: cluster-config.ts

Step 3: EKS nodegroup

cd ../eks-nodegroup
cdk deploy 

SSM parameters:

  • /cdk-eks/vpc-id
  • /${clusterName}/openid-connect-provider-arn
  • /${clusterName}/kubectl-role-arn
clusterName: eks-cluster-local, eks-cluster-dev, eks-cluster-stg

eks-nodegroup/lib/nodegroup-stack.ts

Step 4: Build

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:

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"

cd app
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 5: Deploy

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

Uninstall

find . -name "cdk.context.json" -exec rm -f {} \;
find . -name "cdk.out" -exec rm -rf {} \;

cd eks-nodegroup
cdk destroy

cd ../eks-cluster
cdk destroy

cd ../vpc
cdk destroy

Structure

.
├── build.gradle
├── cluster-config.ts
├── ssm-prefix.ts
├── package-lock.json
├── package.json
├── tsconfig.json
├── app
│   ├── Dockerfile
│   ├── flask_api.py
│   ├── gunicorn.config.py
│   ├── requirements.txt
│   └── sample-rest-api-template.yaml
├── eks-appdeploy
├── eks-cluster
│   ├── bin
│   │   └── index.ts
│   ├── cdk.json
│   ├── jest.config.js
│   └── lib
│       └── cluster-stack.ts
├── eks-cluster-nodegroup
│   ├── bin
│   │   └── index.ts
│   ├── cdk.json
│   ├── jest.config.js
│   └── lib
│       └── cluster-nodegroup-stack.ts
├── eks-nodegroup
│   ├── bin
│   │   └── index.ts
│   ├── cdk.json
│   ├── jest.config.js
│   └── lib
│       └── nodegroup-stack.ts
└── vpc
    ├── bin
    │   └── index.ts
    ├── cdk.json
    └── lib
        └── vpc-stack.ts

Reference

CDK Lib

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