diff --git a/manifests/init.pp b/manifests/init.pp
index e6a6baf2..0a4a5aa2 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -26,30 +26,6 @@
 #     zmq (for zeromq)
 #   Defaults to 'rabbit'
 #
-# [*rabbit_host*]
-#   (optional) Location of rabbitmq installation.
-#   Defaults to $::os_service_default
-#
-# [*rabbit_hosts*]
-#   (optional) List of clustered rabbit servers.
-#   Defaults to $::os_service_default
-#
-# [*rabbit_port*]
-#   (optional) Port for rabbitmq instance.
-#   Defaults to $::os_service_default
-#
-# [*rabbit_password*]
-#   (optional) Password used to connect to rabbitmq.
-#   Defaults to $::os_service_default
-#
-# [*rabbit_userid*]
-#   (optional) User used to connect to rabbitmq.
-#   Defaults to $::os_service_default
-#
-# [*rabbit_virtual_host*]
-#   (optional) The RabbitMQ virtual host.
-#   Defaults to $::os_service_default
-#
 # [*rabbit_use_ssl*]
 #   (optional) Connect over SSL for RabbitMQ
 #   Defaults to $::os_service_default
@@ -248,17 +224,37 @@
 #   in the aodh config.
 #   Defaults to false.
 #
+# === DEPRECATED PARAMETERS
+#
+# [*rabbit_host*]
+#   (optional) Location of rabbitmq installation.
+#   Defaults to $::os_service_default
+#
+# [*rabbit_hosts*]
+#   (optional) List of clustered rabbit servers.
+#   Defaults to $::os_service_default
+#
+# [*rabbit_port*]
+#   (optional) Port for rabbitmq instance.
+#   Defaults to $::os_service_default
+#
+# [*rabbit_password*]
+#   (optional) Password used to connect to rabbitmq.
+#   Defaults to $::os_service_default
+#
+# [*rabbit_userid*]
+#   (optional) User used to connect to rabbitmq.
+#   Defaults to $::os_service_default
+#
+# [*rabbit_virtual_host*]
+#   (optional) The RabbitMQ virtual host.
+#   Defaults to $::os_service_default
+#
 class aodh (
   $ensure_package                     = 'present',
   $alarm_history_time_to_live         = $::os_service_default,
   $default_transport_url              = $::os_service_default,
   $rpc_backend                        = 'rabbit',
-  $rabbit_host                        = $::os_service_default,
-  $rabbit_hosts                       = $::os_service_default,
-  $rabbit_password                    = $::os_service_default,
-  $rabbit_port                        = $::os_service_default,
-  $rabbit_userid                      = $::os_service_default,
-  $rabbit_virtual_host                = $::os_service_default,
   $rabbit_use_ssl                     = $::os_service_default,
   $rabbit_heartbeat_timeout_threshold = $::os_service_default,
   $rabbit_heartbeat_rate              = $::os_service_default,
@@ -304,11 +300,29 @@ class aodh (
   $database_max_overflow              = undef,
   $gnocchi_url                        = $::os_service_default,
   $purge_config                       = false,
+  # DEPRECATED
+  $rabbit_host                        = $::os_service_default,
+  $rabbit_hosts                       = $::os_service_default,
+  $rabbit_password                    = $::os_service_default,
+  $rabbit_port                        = $::os_service_default,
+  $rabbit_userid                      = $::os_service_default,
+  $rabbit_virtual_host                = $::os_service_default,
 ) inherits aodh::params {
 
   include ::aodh::db
   include ::aodh::logging
 
+  if !is_service_default($rabbit_host) or
+    !is_service_default($rabbit_hosts) or
+    !is_service_default($rabbit_password) or
+    !is_service_default($rabbit_port) or
+    !is_service_default($rabbit_userid) or
+    !is_service_default($rabbit_virtual_host) {
+    warning("aodh::rabbit_host, aodh::rabbit_hosts, aodh::rabbit_password, \
+aodh::rabbit_port, aodh::rabbit_userid and aodh::rabbit_virtual_host are \
+deprecated. Please use aodh::default_transport_url instead.")
+  }
+
   package { 'aodh':
     ensure => $ensure_package,
     name   => $::aodh::params::common_package_name,
diff --git a/releasenotes/notes/rabbit-connection-params-deprecation-af7e100a211884d8.yaml b/releasenotes/notes/rabbit-connection-params-deprecation-af7e100a211884d8.yaml
new file mode 100644
index 00000000..f6378ff0
--- /dev/null
+++ b/releasenotes/notes/rabbit-connection-params-deprecation-af7e100a211884d8.yaml
@@ -0,0 +1,6 @@
+---
+deprecations:
+  - aodh::rabbit_host, aodh::rabbit_hosts, aodh::rabbit_password,
+    aodh::rabbit_port, aodh::rabbit_userid and aodh::rabbit_virtual_host are
+    deprecated. aodh::default_transport_url should be used to configure the
+    messaging backend connection information.
diff --git a/spec/acceptance/aodh_wsgi_apache_spec.rb b/spec/acceptance/aodh_wsgi_apache_spec.rb
index 8f8efe2e..a0d1ddc2 100644
--- a/spec/acceptance/aodh_wsgi_apache_spec.rb
+++ b/spec/acceptance/aodh_wsgi_apache_spec.rb
@@ -30,11 +30,9 @@ describe 'basic aodh' do
       Rabbitmq_user_permissions['aodh@/'] -> Service<| tag == 'aodh-service' |>
 
       class { '::aodh':
-        rabbit_userid       => 'aodh',
-        rabbit_password     => 'an_even_bigger_secret',
-        debug               => true,
-        rabbit_host         => '127.0.0.1',
-        database_connection => 'mysql://aodh:a_big_secret@127.0.0.1/aodh?charset=utf8',
+        debug                 => true,
+        default_transport_url => 'rabbit://aodh:an_even_bigger_secret@127.0.0.1:5672',
+        database_connection   => 'mysql://aodh:a_big_secret@127.0.0.1/aodh?charset=utf8',
       }
       class { '::aodh::db::mysql':
         password => 'a_big_secret',