diff --git a/manifests/api.pp b/manifests/api.pp
index 19544456..3cc7b23b 100644
--- a/manifests/api.pp
+++ b/manifests/api.pp
@@ -48,6 +48,10 @@
 #   (optional) Gnocchi external project owner (usually Ceilometer project name)
 #   Defaults to 'services'
 #
+# [*gnocchi_external_domain_name*]
+#   (optional) Domain name of resources creator in Gnocchi.
+#   Defaults to 'Default'
+#
 class aodh::api (
   $manage_service                 = true,
   $enabled                        = true,
@@ -59,6 +63,7 @@ class aodh::api (
   $max_request_body_size          = $::os_service_default,
   $paste_config                   = $::os_service_default,
   $gnocchi_external_project_owner = 'services',
+  $gnocchi_external_domain_name   = 'Default',
 ) inherits aodh::params {
 
 
@@ -116,6 +121,7 @@ as a standalone service, or httpd for being run by a httpd server")
 
   aodh_config {
     'api/gnocchi_external_project_owner': value => $gnocchi_external_project_owner;
+    'api/gnocchi_external_domain_name':   value => $gnocchi_external_domain_name;
     'api/paste_config':                   value => $paste_config;
   }
 
diff --git a/releasenotes/notes/gnocchi_external_domain_name-b592696cefac2242.yaml b/releasenotes/notes/gnocchi_external_domain_name-b592696cefac2242.yaml
new file mode 100644
index 00000000..d3acf913
--- /dev/null
+++ b/releasenotes/notes/gnocchi_external_domain_name-b592696cefac2242.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    The new ``aodh::api::gnocchi_external_domain_name`` parameter has been
+    added.
diff --git a/spec/classes/aodh_api_spec.rb b/spec/classes/aodh_api_spec.rb
index 4ff5a2db..687a896d 100644
--- a/spec/classes/aodh_api_spec.rb
+++ b/spec/classes/aodh_api_spec.rb
@@ -32,7 +32,8 @@ describe 'aodh::api' do
     end
 
     it 'configures api' do
-      is_expected.to contain_aodh_config('api/gnocchi_external_project_owner').with_value( 'services' )
+      is_expected.to contain_aodh_config('api/gnocchi_external_project_owner').with_value('services')
+      is_expected.to contain_aodh_config('api/gnocchi_external_domain_name').with_value('Default')
       is_expected.to contain_aodh_config('api/paste_config').with_value('<SERVICE DEFAULT>')
       is_expected.to contain_oslo__middleware('aodh_config').with(
         :enable_proxy_headers_parsing => '<SERVICE DEFAULT>',
@@ -97,12 +98,18 @@ describe 'aodh::api' do
       it { is_expected.to contain_aodh_config('api/paste_config').with_value('/etc/aodh/api-paste.ini') }
     end
 
-    context 'with gnocchi_external_project_owner' do
+    context 'with gnocchi parameters' do
       before do
-        params.merge!({:gnocchi_external_project_owner => 'gnocchi-project' })
+        params.merge!({
+          :gnocchi_external_project_owner => 'gnocchi-project',
+          :gnocchi_external_domain_name   => 'MyDomain'
+        })
       end
 
-      it { is_expected.to contain_aodh_config('api/gnocchi_external_project_owner').with_value('gnocchi-project') }
+      it 'configures gnocchi parameters' do
+        is_expected.to contain_aodh_config('api/gnocchi_external_project_owner').with_value('gnocchi-project')
+        is_expected.to contain_aodh_config('api/gnocchi_external_domain_name').with_value('MyDomain')
+      end
     end
     context 'with disabled service managing' do
       before do