EKS
Practical EKS guides on PacketSensei: code-first articles on configuration, cost, and the AWS failure modes that show up in production.
12 articles in EKS, newest first.
100.64.0.0/10 in AWS: Using CGNAT Space to Fix EKS IP Exhaustion
When an EKS cluster runs out of pod IPs and the VPC has no RFC 1918 space left, a 100.64.0.0/10 secondary CIDR is the fix. Why AWS allows it, and what breaks.
What are Amazon EKS Capabilities
Explore Amazon EKS capabilities including managed control plane, EKS Auto Mode, off-cluster platform services like Argo CD and ACK, and VPC CNI networking.
5 EKS Networking Tweaks That Cut Your AWS Bill by 40%
Cut Amazon EKS network costs up to 40 percent with five tweaks covering cross-AZ traffic, IP-mode load balancers, VPC endpoints, and NAT gateway placement.
EKS Cost Visibility: Kubecost vs AWS Native Tools vs OpenCost
Compare Kubecost, OpenCost, AWS Cost Explorer, and EKS split cost allocation for pod- and namespace-level cost visibility, and pick the right approach.
EKS vs ECS vs Fargate: Total Cost of Ownership Breakdown
Compare EKS, ECS, and Fargate on true total cost of ownership, factoring in compute, control plane fees, labor, and training across small to enterprise teams.
Karpenter vs Cluster Autoscaler: The Complete Decision Matrix
Compare Karpenter and Cluster Autoscaler for EKS node scaling across speed, bin-packing, Spot handling, and cost, with a decision matrix and migration guide.
Savings Plans vs Reserved Instances for Dynamic EKS Workloads
Learn why Compute Savings Plans beat Reserved Instances for dynamic EKS workloads, how to size baseline commitments, and layer Spot to cut costs 60-70%.
Spot Instances on EKS: A Safety-First Implementation Guide
Run Spot instances on EKS safely using mixed capacity node groups, termination handlers, node affinity, and PodDisruptionBudgets to cut compute costs 60-90%.
The EKS Cost Optimization Checklist
Follow a 30/60/90-day EKS cost optimization plan covering cost visibility, right-sizing, autoscaling, and Spot adoption to reduce cluster spend by 50-80%.
The Hidden EKS Costs: Storage, Networking, and Orphaned Resources
Cut hidden EKS costs by finding orphaned EBS volumes and load balancers, migrating to gp3, adding VPC endpoints, and reducing cross-AZ data transfer charges.
Amazon AWS ECS vs EKS
Compare Amazon ECS vs EKS on architecture, setup, scaling, networking, and cost to decide between AWS-native simplicity and portable, standard Kubernetes.
Introduction to Amazon AWS EKS
Learn how Amazon EKS runs managed Kubernetes on AWS, from control plane and worker node options to VPC networking, IAM authentication, and monitoring.