The AWS CNI plugin allows automatically exporting the following metrics to CloudWatch:

• The number of errors encountered in ipamd
• The number of ipamd actions inprogress
• The maximum number of ENIs that can be attached to the instance
• The maximum number of IP addresses that can be allocated to the instance
• The number of times ipamD reconciles on ENIs and IP addresses
• The number of add IP address request
• The number of delete IP address request
• The number of ENIs allocated
• The total number of IP addresses
• The number of IP addresses assigned to pods
• AWS API call latency in ms
• The number of times AWS API returns an error
• The number of errors not handled in awsutils library

These are super useful for EKS cluster administrators, and correct use of dashboards/alarms can save pain.

In order for this to work, the following needs to be added to eksctl:

• The worker nodes should have cloudwatch:PutMetricData permissions added.
• The following K8s manifest should be deployed: [cni_metrics_helper.yaml].(https://github.com/aws/amazon-vpc-cni-k8s/blob/master/misc/cni_metrics_helper.yaml).
• And finally, for best experience it would be great to automatically create a CloudWatch Dashboard for each EKS cluster.