diff --git a/compass/db/api/cluster.py b/compass/db/api/cluster.py
index a329408f..d5b4a845 100644
--- a/compass/db/api/cluster.py
+++ b/compass/db/api/cluster.py
@@ -1166,6 +1166,10 @@ def validate_clusterhost(session, clusterhost):
 
 
 def validate_cluster(session, cluster):
+    if not cluster.clusterhosts:
+        raise exception.InvalidParameter(
+            '%s does not have any hosts' % cluster.name
+        )
     cluster_roles = [
         flavor_role.role
         for flavor_role in cluster.flavor.flavor_roles
diff --git a/compass/db/api/host.py b/compass/db/api/host.py
index f00ea1c9..accb85fb 100644
--- a/compass/db/api/host.py
+++ b/compass/db/api/host.py
@@ -235,6 +235,10 @@ def is_host_editable(
 
 
 def validate_host(session, host):
+    if not host.host_networks:
+        raise exception.InvalidParameter(
+            '%s does not have any network' % host.name
+        )
     mgmt_interface_set = False
     for host_network in host.host_networks:
         if host_network.is_mgmt: