diff --git a/defaults/openstack/init.yml b/defaults/openstack/init.yml
index 84b975d..2e8f8f5 100644
--- a/defaults/openstack/init.yml
+++ b/defaults/openstack/init.yml
@@ -65,6 +65,8 @@
     nova_upgrade_enabled: ${_param:openstack_upgrade_enabled}
     nova_instance_build_timeout: 3600
     nova_service_user_enabled: ${_param:openstack_service_user_enabled}
+    qemu_max_processes: 140000
+    qemu_max_files: 35000
     # Glance
     mysql_glance_username: glance
     keystone_glance_username: glance
diff --git a/nova/compute/cluster.yml b/nova/compute/cluster.yml
index d6b0251..3b1587b 100644
--- a/nova/compute/cluster.yml
+++ b/nova/compute/cluster.yml
@@ -88,6 +88,9 @@
       # Set migration address explicitly to avoid such problems.
       libvirt:
         migration_inbound_addr: ${_param:single_address}
+      qemu:
+        max_processes: ${_param:qemu_max_processes}
+        max_files: ${_param:qemu_max_files}
       my_ip: ${_param:single_address}
       cache:
         security: