diff --git a/nova/files/juno/nova-compute.conf.contrail.Debian b/nova/files/juno/nova-compute.conf.contrail.Debian
index 168688c..08e5e10 100644
--- a/nova/files/juno/nova-compute.conf.contrail.Debian
+++ b/nova/files/juno/nova-compute.conf.contrail.Debian
@@ -18,6 +18,10 @@
 
 allow_resize_to_same_host=True
 
+{%- if compute.reserved_host_memory_mb is defined %}
+reserved_host_memory_mb = {{ compute.reserved_host_memory_mb }}
+{%- endif %}
+
 live_migration_flag=VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER,VIR_MIGRATE_LIVE
 live_migration_retry_count=30
 
diff --git a/nova/files/liberty/nova-compute.conf.contrail.Debian b/nova/files/liberty/nova-compute.conf.contrail.Debian
index 0d6cf5b..34013f0 100644
--- a/nova/files/liberty/nova-compute.conf.contrail.Debian
+++ b/nova/files/liberty/nova-compute.conf.contrail.Debian
@@ -21,6 +21,10 @@
 use_cow_images = {{ compute.image.use_cow }}
 {%- endif %}
 
+{%- if compute.reserved_host_memory_mb is defined %}
+reserved_host_memory_mb = {{ compute.reserved_host_memory_mb }}
+{%- endif %}
+
 allow_resize_to_same_host=True
 
 live_migration_flag=VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER,VIR_MIGRATE_LIVE