AWS CNI Metrics

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The AWS VPC CNI, found on EKS, exposes metrics that can be collected in Prometheus. This is not the case by default, AWS favoring CloudWatch, so you'll have to add a podMonitor matching the aws-node daemonset:

apiVersion: monitoring.coreos.com/v1
kind: PodMonitor
metadata:
  name: aws-cni-metrics
  namespace: kube-system
spec:
  jobLabel: k8s-app
  namespaceSelector:
    matchNames:
    - kube-system
  podMetricsEndpoints:
  - interval: 30s
    path: /metrics
    port: metrics
  selector:
    matchLabels:
      k8s-app: aws-node

The dashboard displays

• the ENI / IP usage (saturation of IPs in the allocated ENIs, saturation of ENI on the nodes),
• the latency related to the different AWS API calls
• the errors on the API calls and the IPAM operations