c8i.2xlarge as an EKS node
8 vCPU16 GiBx86_64Intel Xeon Scalable (Granite Rapids)AWS us-east-1C8I Double Extra Large
Where the c8i.2xlarge goes
Default EKS setup: EKS, VPC CNI default (ENI limit).
CPU7.71 of 8 vCPU left for your pods
Memory14.09 GiB of 16 GiB left for your pods
your podsDaemonSets (200m, 300 MiB assumed)kubelet reservedeviction
118max pods per node
$273.63on demand / month · $0.3748/h
$151.12spot / month (varies)
c8i.2xlarge EKS max pods and allocatable memory — quick answers
- How many pods can a c8i.2xlarge run as a node with EKS, VPC CNI default (ENI limit)? Up to 118; kubelet keeps 1653 MiB of memory and 90m CPU, leaving 14.39 GiB and 7.91 vCPU for pods.
- How many pods can a c8i.2xlarge run as a node with EKS, prefix delegation? Up to 110; kubelet keeps 1565 MiB of memory and 90m CPU, leaving 14.47 GiB and 7.91 vCPU for pods.
- How many 500m / 1 GiB pods fit? 14 per node after DaemonSets; 1 nodes for 10 replicas, about $273.63/month on demand.
What kubelet reserves on c8i.2xlarge
| Setup | Max pods | kube-reserved CPU | Memory reserved + eviction | Allocatable CPU | Allocatable memory | Memory usable |
|---|---|---|---|---|---|---|
| EKS, VPC CNI default (ENI limit) secondary IPs per ENI | 118 | 90m | 1553 Mi + 100 Mi | 7.91 | 14.39 GiB | 89.9% |
| EKS, prefix delegation ENABLE_PREFIX_DELEGATION=true | 110 | 90m | 1465 Mi + 100 Mi | 7.91 | 14.47 GiB | 90.4% |
How these numbers are computed: reservation formulas. How many subnet IPs a c8i.2xlarge takes with the VPC CNI: EKS max pods and IP calculator. Check a live node with kubectl describe node → Allocatable.
How many pods fit on one c8i.2xlarge
Assumes DaemonSets (CNI, kube-proxy, log and metrics agents) request 200m CPU, 300 Mi and 3 pods per node. Try your own numbers in the node calculator.
| Pod requests (CPU / memory) | EKS, VPC CNI default (ENI limit) | EKS, prefix delegation | $ per pod / month |
|---|---|---|---|
| 100m / 128 Mi | 77 | 77 | $3.55 |
| 250m / 256 Mi | 30 | 30 | $9.12 |
| 250m / 512 Mi | 28 | 28 | $9.77 |
| 500m / 512 Mi | 15 | 15 | $18.24 |
| 500m / 1024 Mi | 14 | 14 | $19.55 |
| 1000m / 1024 Mi | 7 | 7 | $39.09 |
| 1000m / 2048 Mi | 7 | 7 | $39.09 |
| 2000m / 4096 Mi | 3 | 3 | $91.21 |
| 4000m / 8192 Mi | 1 | 1 | $273.63 |
Similar EKS node types
| Type | vCPU | GiB | Alloc CPU | Alloc memory | Max pods | $/month | $ per alloc GiB |
|---|---|---|---|---|---|---|---|
| c6g.2xlarge | 8 | 16 | 7.91 | 15.03 GiB | 58 | $198.56 | $13.21 |
| c7g.2xlarge | 8 | 16 | 7.91 | 15.03 GiB | 58 | $211.70 | $14.08 |
| c6a.2xlarge | 8 | 16 | 7.91 | 15.03 GiB | 58 | $223.38 | $14.86 |
| c6gd.2xlarge | 8 | 16 | 7.91 | 15.03 GiB | 58 | $224.26 | $14.92 |
| c5a.2xlarge | 8 | 16 | 7.91 | 15.03 GiB | 58 | $224.84 | $14.96 |
| c8g.2xlarge | 8 | 16 | 7.91 | 15.03 GiB | 58 | $232.90 | $15.50 |
| c7i-flex.2xlarge | 8 | 16 | 7.91 | 15.03 GiB | 58 | $247.58 | $16.47 |
| c5.2xlarge | 8 | 16 | 7.91 | 15.03 GiB | 58 | $248.20 | $16.51 |
Closest match on other clouds
| Type | vCPU | GiB | Alloc CPU | Alloc memory | Max pods | $/month | $ per alloc GiB |
|---|---|---|---|---|---|---|---|
| d8plsv6 | 8 | 16 | 7.82 | 11.90 GiB | 250 | $181.04 | $15.21 |
| n4a-highcpu-8 | 8 | 16 | 7.91 | 13.30 GiB | 110 | $189.68 | $14.26 |
| d8plsv5 | 8 | 16 | 7.82 | 11.90 GiB | 250 | $198.56 | $16.68 |
| n4d-highcpu-8 | 8 | 16 | 7.91 | 13.30 GiB | 110 | $208.66 | $15.69 |
| c2d-highcpu-8 | 8 | 16 | 7.91 | 13.30 GiB | 110 | $218.89 | $16.45 |
| c3d-highcpu-8 | 8 | 16 | 7.91 | 13.30 GiB | 110 | $218.89 | $16.45 |