Amazon EKS Auto Mode now supports Application Recovery Controller zonal shift

Amazon Elastic Kubernetes Service (Amazon EKS) now supports Amazon Application Recovery Controller (ARC) zonal shift and autoshift for clusters using EKS Auto Mode. ARC helps manage and coordinate recovery across AWS Regions and Availability Zones (AZs). With this launch, EKS Auto Mode automatically protects compute during a zonal shift at no additional cost or configuration, maintaining Kubernetes application availability by shifting in-cluster network traffic away from an impaired AZ. Customers run highly available applications across multiple AZs in Amazon EKS to eliminate single points of failure. Because EKS Auto Mode manages compute on their behalf, they get zonal shift support without setting flags, granting permissions, or managing Karpenter versions; simply enable ARC zonal shift on their cluster. When a zonal shift is activated, EKS Auto Mode stops provisioning new capacity in the impaired AZ and halts voluntary disruptions such as consolidation and drift for nodes in that zone. It also prevents voluntary disruptions in healthy zones if they depend on scheduling pods to the impaired zone. When the shift expires or is canceled, normal operations resume. Users can start a shift manually or authorize AWS to manage it using zonal autoshift, with practice runs to verify cluster functions with one less AZ. ARC zonal shift support for EKS Auto Mode is available in all AWS Regions where EKS Auto Mode is offered.