Pod Topology Spread Constraints#

Pod anti-affinity gives you binary control: either a pod avoids another pod’s topology domain or it does not. But it does not give you even distribution. If you have 6 replicas and 3 zones, anti-affinity cannot express “put exactly 2 in each zone.” Topology spread constraints solve this by letting you specify the maximum allowed imbalance between any two topology domains.

How Topology Spread Works#

A topology spread constraint defines: