If you set deploy_kubecost to True in cluster-bootstrap/cdk.json then the template will deploy the open core Helm Chart for Kubecost.
We have deployed an in-VPC private Network Load Balancer (NLB) to access your Kubecost service. There is no login or password - access is controlled from a network perspective.
To access this enter the following command get service kubecost-nlb --namespace=kube-system to find the address of this under EXTERNAL-IP. Alternatively, you can find the Kubecost NLB in the AWS EC2 console and get its address from there.
You'll need to have network connectivity via something like the Client VPN, Site-to-Site VPN or DirectConnect to be able to reach it.
You can see more about how to use Kubecost here - https://docs.kubecost.com/cost-allocation.html