diff --git a/cluster-autoscaler/simulator/basic_cluster_snapshot.go b/cluster-autoscaler/simulator/basic_cluster_snapshot.go
index 780be803c7..0f3e3e1194 100644
--- a/cluster-autoscaler/simulator/basic_cluster_snapshot.go
+++ b/cluster-autoscaler/simulator/basic_cluster_snapshot.go
@@ -53,6 +53,17 @@ func (data *internalBasicSnapshotData) listNodeInfosThatHavePodsWithAffinityList
 	return havePodsWithAffinityList, nil
 }
 
+func (data *internalBasicSnapshotData) listNodeInfosThatHavePodsWithRequiredAntiAffinityList() ([]*schedulerframework.NodeInfo, error) {
+	havePodsWithRequiredAntiAffinityList := make([]*schedulerframework.NodeInfo, 0, len(data.nodeInfoMap))
+	for _, v := range data.nodeInfoMap {
+		if len(v.PodsWithRequiredAntiAffinity) > 0 {
+			havePodsWithRequiredAntiAffinityList = append(havePodsWithRequiredAntiAffinityList, v)
+		}
+	}
+
+	return havePodsWithRequiredAntiAffinityList, nil
+}
+
 func (data *internalBasicSnapshotData) getNodeInfo(nodeName string) (*schedulerframework.NodeInfo, error) {
 	if v, ok := data.nodeInfoMap[nodeName]; ok {
 		return v, nil
@@ -235,6 +246,11 @@ func (snapshot *basicClusterSnapshotNodeLister) HavePodsWithAffinityList() ([]*s
 	return (*BasicClusterSnapshot)(snapshot).getInternalData().listNodeInfosThatHavePodsWithAffinityList()
 }
 
+// HavePodsWithRequiredAntiAffinityList returns the list of NodeInfos of nodes with pods with required anti-affinity terms.
+func (snapshot *basicClusterSnapshotNodeLister) HavePodsWithRequiredAntiAffinityList() ([]*schedulerframework.NodeInfo, error) {
+	return (*BasicClusterSnapshot)(snapshot).getInternalData().listNodeInfosThatHavePodsWithRequiredAntiAffinityList()
+}
+
 // Returns the NodeInfo of the given node name.
 func (snapshot *basicClusterSnapshotNodeLister) Get(nodeName string) (*schedulerframework.NodeInfo, error) {
 	return (*BasicClusterSnapshot)(snapshot).getInternalData().getNodeInfo(nodeName)
diff --git a/cluster-autoscaler/simulator/delegating_shared_lister.go b/cluster-autoscaler/simulator/delegating_shared_lister.go
index 5254970cf4..ea21bc4e50 100644
--- a/cluster-autoscaler/simulator/delegating_shared_lister.go
+++ b/cluster-autoscaler/simulator/delegating_shared_lister.go
@@ -62,6 +62,11 @@ func (lister *unsetNodeInfoLister) HavePodsWithAffinityList() ([]*schedulerframe
 	return nil, fmt.Errorf("lister not set in delegate")
 }
 
+// HavePodsWithRequiredAntiAffinityList always returns an error.
+func (lister *unsetNodeInfoLister) HavePodsWithRequiredAntiAffinityList() ([]*schedulerframework.NodeInfo, error) {
+	return nil, fmt.Errorf("lister not set in delegate")
+}
+
 // Get always returns an error
 func (lister *unsetNodeInfoLister) Get(nodeName string) (*schedulerframework.NodeInfo, error) {
 	return nil, fmt.Errorf("lister not set in delegate")
diff --git a/cluster-autoscaler/simulator/delta_cluster_snapshot.go b/cluster-autoscaler/simulator/delta_cluster_snapshot.go
index 1aba8ff990..e06d987bbd 100644
--- a/cluster-autoscaler/simulator/delta_cluster_snapshot.go
+++ b/cluster-autoscaler/simulator/delta_cluster_snapshot.go
@@ -52,8 +52,9 @@ type internalDeltaSnapshotData struct {
 	modifiedNodeInfoMap map[string]*schedulerframework.NodeInfo
 	deletedNodeInfos    map[string]bool
 
-	nodeInfoList         []*schedulerframework.NodeInfo
-	havePodsWithAffinity []*schedulerframework.NodeInfo
+	nodeInfoList                     []*schedulerframework.NodeInfo
+	havePodsWithAffinity             []*schedulerframework.NodeInfo
+	havePodsWithRequiredAntiAffinity []*schedulerframework.NodeInfo
 }
 
 func newInternalDeltaSnapshotData() *internalDeltaSnapshotData {
@@ -178,6 +179,7 @@ func (data *internalDeltaSnapshotData) clearCaches() {
 
 func (data *internalDeltaSnapshotData) clearPodCaches() {
 	data.havePodsWithAffinity = nil
+	data.havePodsWithRequiredAntiAffinity = nil
 }
 
 func (data *internalDeltaSnapshotData) removeNode(nodeName string) error {
@@ -326,6 +328,24 @@ func (snapshot *deltaSnapshotNodeLister) HavePodsWithAffinityList() ([]*schedule
 	return data.havePodsWithAffinity, nil
 }
 
+// HavePodsWithRequiredAntiAffinityList returns the list of NodeInfos of nodes with pods with required anti-affinity terms.
+func (snapshot *deltaSnapshotNodeLister) HavePodsWithRequiredAntiAffinityList() ([]*schedulerframework.NodeInfo, error) {
+	data := snapshot.data
+	if data.havePodsWithRequiredAntiAffinity != nil {
+		return data.havePodsWithRequiredAntiAffinity, nil
+	}
+
+	nodeInfoList := snapshot.data.getNodeInfoList()
+	havePodsWithRequiredAntiAffinityList := make([]*schedulerframework.NodeInfo, 0, len(nodeInfoList))
+	for _, node := range nodeInfoList {
+		if len(node.PodsWithRequiredAntiAffinity) > 0 {
+			havePodsWithRequiredAntiAffinityList = append(havePodsWithRequiredAntiAffinityList, node)
+		}
+	}
+	data.havePodsWithRequiredAntiAffinity = havePodsWithRequiredAntiAffinityList
+	return data.havePodsWithRequiredAntiAffinity, nil
+}
+
 // Get returns node info by node name.
 func (snapshot *deltaSnapshotNodeLister) Get(nodeName string) (*schedulerframework.NodeInfo, error) {
 	return (*DeltaClusterSnapshot)(snapshot).getNodeInfo(nodeName)