EKS Upgrades Stay Stable: Automated Lifecycles Meet LSE Layer 7 and CenTest

A financial services team completed an Amazon EKS upgrade from 1.27 to 1.28 with no outage.

They reduced risk by decoupling control-plane updates from node replacement and automatically validating add-on compatibility.

Node groups were rolled out gradually with spare capacity, while PodDisruptionBudgets and traffic handling stayed active.

Service behavior, including AWS Load Balancer Controller, CoreDNS, Calico, and Kyverno, was verified with synthetic and production checks.

The upgrade finished within a normal maintenance window without customer-facing incidents.