Support for Zonal Shift in EKS clusters - Eksctl User Guide
Creating a cluster with zonal shift enabledEnabling zonal shift on an existing clusterFurther information

Support for Zonal Shift in EKS clusters

EKS now supports Amazon Application Recovery Controller (ARC) zonal shift and zonal autoshift that enhances the resiliency of multi-AZ cluster environments. With AWS Zonal Shift, customers can shift in-cluster traffic away from an impaired availability zone, ensuring new Kubernetes pods and nodes are launched in healthy availability zones only.

Creating a cluster with zonal shift enabled

# zonal-shift-cluster.yaml
---
apiVersion: eksctl.io/v1alpha5
kind: ClusterConfig

metadata:
  name: highly-available-cluster
  region: us-west-2


zonalShiftConfig:
  enabled: true
eksctl create cluster -f zonal-shift-cluster.yaml

Enabling zonal shift on an existing cluster

To enable or disable zonal shift on an existing cluster, run

eksctl utils update-zonal-shift-config -f zonal-shift-cluster.yaml

or without a config file:

eksctl utils update-zonal-shift-config --cluster=zonal-shift-cluster --enabled

Further information