Why Kubernetes Topology Spread Constraints Create Unbalanced Nodes

Episode notes

Episode 45 of DevOps Daily with Fexingo digs into Kubernetes topology spread constraints – the feature meant to spread pods evenly across failure domains, but that can actually create severe node imbalances. Lucas and Luna explore a real incident where a three-node cluster ended up with 40 pods on one node and 4 each on the others, causing resource exhaustion and cascading failures. They explain how 'maxSkew' and 'whenUnsatisfiable' interact in surprising ways, why topology spread constraints don't play well with autoscalers, and how to avoid the 'spread paradox' where enforcing balance creates imbalance. Tune in for practical configuration advice and a breakdown of when to use topology spread instead of pod affinity. #Kubernetes #TopologySpreadConstraints #MaxSkew #PodScheduling #DevOps #K8s #ClusterBalancing #NodeImbalance #PodAffinity #CloudNative #FexingoBusiness #BusinessPodcast #Technology #CI/CD #SoftwareOperations #Scheduling #Autoscaler #KubernetesFailure Keep every episode free: buymeacoffee.com/fexingo