Cloud & Infrastructure Practical By Samson Tanimawo, PhD Published Feb 23, 2026 4 min read

EKS Pod Density Tuning

Default pod-per-node limits are conservative. The tuning that doubles density without breaking the network.

The default limit

EKS uses ENI-based networking. Pods per node = (ENIs per instance × IPs per ENI) - 1.

Small instances: 8-15 pods. Limits density.

Each ENI can claim /28 IP ranges instead of single IPs. Multiplies pod count 16x.

Enable in CNI config. Test with worker pool first.

Higher pod density = fewer nodes for the same workload.

Typically 30-50% node count reduction.