change default topology key
@@ -203,7 +203,7 @@ var affinityValidTopologyKeys = map[string]struct{}{
"failure-domain.beta.kubernetes.io/region": struct{}{},
}
-var defaultAffinityTopologyKey = "failure-domain.beta.kubernetes.io/zone"
+var defaultAffinityTopologyKey = "kubernetes.io/hostname"
const affinityOff = "none"
