# AWS EKS optimization | Cloud Efficiency Hub Canonical: https://www.pointfive.co/efficiency-hub/cloud-services/aws-eks 8 documented AWS EKS cost inefficiencies, each with how to detect it and how to fix it. [Cloud Efficiency Hub](https://www.pointfive.co/efficiency-hub) 8 documented AWS EKS cost inefficiencies, each with how to detect it and how to fix it. ## 8 inefficiencies [All services](https://www.pointfive.co/efficiency-hub#browse-by-service) - AWS EKS CER-0298 ### [Stale Completed or Failed Fargate Pods Causing Direct Billing and Capacity Waste](https://www.pointfive.co/efficiency-hub/inefficiencies/stale-completed-or-failed-fargate-pods-causing-direct-billing-and-capacity-waste) Kubernetes Jobs or CronJobs running on EKS Fargate leave completed or failed pod objects in the cluster indefinitely. Although the workload execution has finished, AWS keeps the underlying Fargate microVM running to allow log inspection... Compute - AWS EKS CER-0280 ### [Fargate Resource Rounding and Per-Pod Overhead Driving Step-Up Costs](https://www.pointfive.co/efficiency-hub/inefficiencies/fargate-resource-rounding-and-per-pod-overhead-driving-step-up-costs) Pod resource requests - often inflated by sidecar containers-push total memory or CPU just over a Fargate sizing boundary. Because Fargate adds mandatory system overhead and only supports fixed resource combinations, small incremental... Compute - AWS EKS CER-0120 ### [Orphaned and Overprovisioned Resources in EKS Clusters](https://www.pointfive.co/efficiency-hub/inefficiencies/orphaned-and-overprovisioned-resources-in-eks-clusters) In EKS environments, cluster sprawl can occur when workloads are removed but underlying resources remain. Common issues include persistent volumes no longer mounted by pods, services still backed by ELBs despite being unused, and... Compute - AWS EKS CER-0192 ### [Orphaned Kubernetes Resources in EKS](https://www.pointfive.co/efficiency-hub/inefficiencies/orphaned-kubernetes-resources-e7e68) In Kubernetes environments, resources such as ConfigMaps, Secrets, Services, and Persistent Volume Claims (PVCs) are often created dynamically by applications or deployment pipelines. When applications are removed or reconfigured, these... Compute - AWS EKS CER-0004 ### [Inactive Kubernetes Workload](https://www.pointfive.co/efficiency-hub/inefficiencies/inactive-kubernetes-workload) Workloads with consistently low CPU and memory usage may no longer serve active traffic or scheduled tasks, but continue reserving resources within the cluster. These idle deployments often remain after project migrations, feature... Compute - AWS EKS CER-0061 ### [Inactive EKS Cluster](https://www.pointfive.co/efficiency-hub/inefficiencies/inactive-eks-cluster) Clusters that no longer run active workloads but remain provisioned continue incurring hourly control plane costs and may also maintain associated infrastructure like node groups or VPC components. Inactive clusters often persist after... Compute - AWS EKS CER-0077 ### [Outdated EKS Cluster Incurring Extended Support Charges](https://www.pointfive.co/efficiency-hub/inefficiencies/outdated-eks-cluster-incurring-extended-support-charges) When an EKS cluster remains on a Kubernetes version that has reached the end of standard support, AWS begins charging an additional Extended Support fee. These charges often arise from delays in upgrade cycles, uncertainty about workload... Compute - AWS EKS CER-0500 ### [Cross-AZ Data Transfer from Kubernetes Service Routing in EKS](https://www.pointfive.co/efficiency-hub/inefficiencies/cross-az-data-transfer-from-kubernetes-service-routing-in-eks) Multi-AZ EKS clusters are the recommended default, but Kubernetes Service routing does not take Availability Zones into account unless told to. On EKS, kube-proxy distributes traffic for a Service across all of its endpoints in the cluster... Networking ## More AWS services - [AWS EC2 23](https://www.pointfive.co/efficiency-hub/cloud-services/aws-ec2) - [AWS RDS 19](https://www.pointfive.co/efficiency-hub/cloud-services/aws-rds) - [AWS S3 15](https://www.pointfive.co/efficiency-hub/cloud-services/aws-s3) - [AWS Lambda 12](https://www.pointfive.co/efficiency-hub/cloud-services/aws-lambda) - [AWS EBS 10](https://www.pointfive.co/efficiency-hub/cloud-services/aws-ebs) - [AWS CloudWatch 8](https://www.pointfive.co/efficiency-hub/cloud-services/aws-cloudwatch) - [AWS ElastiCache 8](https://www.pointfive.co/efficiency-hub/cloud-services/aws-elasticache) - [AWS DynamoDB 7](https://www.pointfive.co/efficiency-hub/cloud-services/aws-dynamodb) - [AWS Bedrock 6](https://www.pointfive.co/efficiency-hub/cloud-services/aws-bedrock) - [AWS ELB 6](https://www.pointfive.co/efficiency-hub/cloud-services/aws-elb) --- Source: the public page above. Product screenshots and illustrative interfaces are examples, not live customer data.