AKS Node Disruption Policy is Now in Preview: Control When Your Nodes Get Reimaged

This article covers the new AKS Node Disruption Policy preview, which allows cluster operators to control when AKS reimages nodes during configuration changes like HTTP proxy updates, CA certificate changes, or network policy switches. It explains three policy values: Allow (default immediate reimaging), Block (rejects changes requiring reimaging), and AllowDuringMaintenanceWindow (defers reimaging to scheduled maintenance windows). The feature requires the aks-preview CLI extension and the NodeDisruptionProfile feature flag. It provides practical guidance for managing node disruptions in production clusters.