What does "eksctl create iamserviceaccount" do under the hood on an EKS cluster?
AWS supports IAM Roles for Service Accounts (IRSA) that allows cluster operators to map AWS IAM Roles to Kubernetes Service Accounts. To do so, one has to create an iamserviceaccount in an EKS cluster: eksctl create iamserviceaccount \ --name <AUTOSCALER_NAME> \ --namespace kube-system \ --cluster <CLUSTER_NAME> \ --attach-policy-arn <POLICY_A