cdk8s on AWS EKS

Kubernetes development with cdk8s on AWS EKS.

• Refer: EKSctl to deploy EKS cluster on AWS. Checkout: https://github.com/productiveAnalytics/EKS-cluster/blob/master/eks_cluster_using_eksctl_on_mac.sh

CDK8S Environment variables

export CDK8S_ENV_NAME='sbx' export CDK8S_PREFIX='cdk8s-on-eks' export CDK8S_NAMESPACE="cdk8s-eks-${CDK8S_ENV_NAME}"

Setup cdk8s:

Install cdk8s

npm install -g cdk8s-cli

OR on MacOs, brew install cdk8s

Confirm installation of cdk8s

cdk8s --version

Initialize project

mkdir -p cdk8s_sandbox_on_eks && cd cdk8s_sandbox_on_eks/

For Typescript

mkdir typescript/ && cd typescript/

Create starter typescript project:

cdk8s init typescript-app

For Python3,

mkdir python/ && cd python/

Create starter python3 project:

python3 -m pip install pipenv
cdk8s init python-app

Synthesize Kubernetes YAML

Compile and Build for typescript:

npm run compile && cdk8s synth

Other useful commands:

   # Compile
   npm run compile     Compile typescript code to javascript (or "yarn watch")
   npm run watch       Watch for changes and compile typescript in the background
   npm run build       Compile + synth
   
   # Generate kubernetes YAML
   npm run synth       Synthesize k8s manifests from charts to dist/ (ready for 'kubectl apply -f')

Compile and Build for python3:

cdk8s synth

Ensure that namespace and fargate profile are created

Create namespace

kubectl create namespace ${CDK8S_NAMESPACE}

OR Use KubeCtl with JSON: kubectl apply -f properties/namespace_cdk8s-eks-sbx.json

Create Fargate Profile

eksctl create fargateprofile
--namespace ${CDK8S_NAMESPACE}
--name fp-cdk8s-${CDK8S_ENV_NAME}
--cluster laap-eks-ue1-linear-cluster-sbx
--labels app=${CDK8S_PREFIX},environment=${CDK8S_ENV_NAME},language='typescript'

Deploy Kubernetes YAML

# Deploy YAML using kubect:
kubectl apply -f dist/

Check the deployment:

   kubectl get deployments

See the Kubernetes LoadBalancer Service:

  kubectl get services