diff --git a/ansible/roles/ceilometer/templates/ceilometer.conf.j2 b/ansible/roles/ceilometer/templates/ceilometer.conf.j2
index bba77f04aa..3979f2c18c 100644
--- a/ansible/roles/ceilometer/templates/ceilometer.conf.j2
+++ b/ansible/roles/ceilometer/templates/ceilometer.conf.j2
@@ -2,7 +2,8 @@
 debug = {{ ceilometer_logging_debug }}
 
 log_dir = /var/log/kolla/ceilometer
-rpc_backend = rabbit
+
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
 
 [api]
 port = {{ ceilometer_api_port }}
@@ -27,12 +28,6 @@ auth_type = password
 [notification]
 store_events = true
 
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
-
 [service_credentials]
 auth_url = {{ internal_protocol  }}://{{ kolla_internal_fqdn }}:{{ keystone_public_port }}/v3
 region_name = {{ openstack_region_name }}
diff --git a/ansible/roles/cinder/templates/cinder.conf.j2 b/ansible/roles/cinder/templates/cinder.conf.j2
index 9aeb50f20b..d6e46df9b9 100644
--- a/ansible/roles/cinder/templates/cinder.conf.j2
+++ b/ansible/roles/cinder/templates/cinder.conf.j2
@@ -42,6 +42,8 @@ nova_catalog_info = compute:nova:internalURL
 
 auth_strategy = keystone
 
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+
 [oslo_messaging_notifications]
 {% if enable_ceilometer | bool %}
 driver = messagingv2
@@ -69,12 +71,6 @@ memcached_servers = {% for host in groups['memcached'] %}{{ hostvars[host]['ansi
 [oslo_concurrency]
 lock_path = /var/lib/cinder/tmp
 
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
-
 
 {% if enable_cinder_backend_lvm | bool %}
 [lvm-1]
diff --git a/ansible/roles/glance/templates/glance-api.conf.j2 b/ansible/roles/glance/templates/glance-api.conf.j2
index 3bce5a9a4b..d274e1d6d8 100644
--- a/ansible/roles/glance/templates/glance-api.conf.j2
+++ b/ansible/roles/glance/templates/glance-api.conf.j2
@@ -22,6 +22,8 @@ show_multiple_locations = True
 
 cinder_catalog_info = volume:cinder:internalURL
 
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+
 [database]
 connection = mysql+pymysql://{{ glance_database_user }}:{{ glance_database_password }}@{{ glance_database_address }}/{{ glance_database_name }}
 max_retries = -1
@@ -66,12 +68,6 @@ filesystem_store_datadir = /var/lib/glance/images/
 [oslo_messaging_notifications]
 {% if enable_ceilometer | bool %}
 driver = messagingv2
-
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
 {% else %}
 driver = noop
 {% endif %}
diff --git a/ansible/roles/glance/templates/glance-registry.conf.j2 b/ansible/roles/glance/templates/glance-registry.conf.j2
index c2f3b6bcbd..6fd4b68c5b 100644
--- a/ansible/roles/glance/templates/glance-registry.conf.j2
+++ b/ansible/roles/glance/templates/glance-registry.conf.j2
@@ -8,6 +8,8 @@ bind_host = {{ api_interface_address }}
 bind_port = {{ glance_registry_port }}
 workers = {{ openstack_service_workers }}
 
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+
 [database]
 connection = mysql+pymysql://{{ glance_database_user }}:{{ glance_database_password }}@{{ glance_database_address }}/{{ glance_database_name }}
 max_retries = -1
@@ -40,12 +42,6 @@ flavor = keystone
 [oslo_messaging_notifications]
 {% if enable_ceilometer | bool %}
 driver = messagingv2
-
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
 {% else %}
 driver = noop
 {% endif %}
diff --git a/ansible/roles/heat/templates/heat.conf.j2 b/ansible/roles/heat/templates/heat.conf.j2
index faccf7d67f..db546beff3 100644
--- a/ansible/roles/heat/templates/heat.conf.j2
+++ b/ansible/roles/heat/templates/heat.conf.j2
@@ -11,16 +11,11 @@ stack_domain_admin = heat_domain_admin
 stack_domain_admin_password = {{ heat_domain_admin_password }}
 stack_user_domain_name = heat_user_domain
 
-rpc_backend = rabbit
 deferred_auth_method = trusts
 trusts_delegated_role = heat_stack_owner
 num_engine_workers = {{ openstack_service_workers }}
 
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
 
 {% if service_name == 'heat-api' %}
 [heat_api]
diff --git a/ansible/roles/ironic/templates/ironic.conf.j2 b/ansible/roles/ironic/templates/ironic.conf.j2
index 31b8126df2..b22a278f23 100644
--- a/ansible/roles/ironic/templates/ironic.conf.j2
+++ b/ansible/roles/ironic/templates/ironic.conf.j2
@@ -6,6 +6,8 @@ admin_password = {{ keystone_admin_password }}
 
 enabled_drivers = pxe_ipmitool
 
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+
 {% if service_name == 'ironic-api' %}
 [api]
 host_ip = {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}
@@ -53,9 +55,3 @@ glance_host = {{ kolla_internal_fqdn }}
 
 [neutron]
 url = {{ internal_protocol }}://{{ kolla_internal_fqdn }}:{{ neutron_server_port }}
-
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
diff --git a/ansible/roles/magnum/templates/magnum.conf.j2 b/ansible/roles/magnum/templates/magnum.conf.j2
index 33a2500063..e7cf2ed9a0 100644
--- a/ansible/roles/magnum/templates/magnum.conf.j2
+++ b/ansible/roles/magnum/templates/magnum.conf.j2
@@ -3,6 +3,8 @@ debug = {{ magnum_logging_debug }}
 
 log_dir = /var/log/kolla/magnum
 
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+
 {% if service_name == 'magnum-api' %}
 [api]
 port = {{ magnum_api_port }}
@@ -43,9 +45,3 @@ memcached_servers = {% for host in groups['memcached'] %}{{ hostvars[host]['ansi
 
 [oslo_concurrency]
 lock_path = /var/lib/magnum/tmp
-
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
diff --git a/ansible/roles/manila/templates/manila.conf.j2 b/ansible/roles/manila/templates/manila.conf.j2
index 662a32c54c..71c6413271 100644
--- a/ansible/roles/manila/templates/manila.conf.j2
+++ b/ansible/roles/manila/templates/manila.conf.j2
@@ -9,16 +9,11 @@ my_ip = {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['add
 rootwrap_config = /etc/manila/rootwrap.conf
 api_paste_config = /etc/manila/api-paste.ini
 
-rpc_backend = rabbit
-
 auth_strategy = keystone
 
 os_region_name = {{ openstack_region_name }}
 
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
 
 [oslo_concurrency]
 lock_path = /var/lib/manila/tmp
diff --git a/ansible/roles/mistral/templates/mistral.conf.j2 b/ansible/roles/mistral/templates/mistral.conf.j2
index d276cb1f79..7cdbcd35a3 100644
--- a/ansible/roles/mistral/templates/mistral.conf.j2
+++ b/ansible/roles/mistral/templates/mistral.conf.j2
@@ -12,6 +12,8 @@ bind_host = {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4'][
 bind_port = {{ mistral_api_port }}
 {% endif %}
 
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+
 [database]
 connection = mysql+pymysql://{{ mistral_database_user }}:{{ mistral_database_password }}@{{ mistral_database_address }}/{{ mistral_database_name }}
 max_retries = -1
@@ -34,11 +36,5 @@ memcached_servers = {% for host in groups['memcached'] %}{{ hostvars[host]['ansi
 [mistral]
 url = {{ internal_protocol }}://{{ kolla_internal_fqdn }}:{{ mistral_api_port }}
 
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
-
 [oslo_messaging_notifications]
 driver = noop
diff --git a/ansible/roles/murano/templates/murano.conf.j2 b/ansible/roles/murano/templates/murano.conf.j2
index d1fbde994a..08e9e4ebb4 100644
--- a/ansible/roles/murano/templates/murano.conf.j2
+++ b/ansible/roles/murano/templates/murano.conf.j2
@@ -8,6 +8,8 @@ bind_host = {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4'][
 bind_port = {{ murano_api_port }}
 {% endif %}
 
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+
 [engine]
 workers = {{ openstack_service_workers }}
 
@@ -33,11 +35,6 @@ memcached_servers = {% for host in groups['memcached'] %}{{ hostvars[host]['ansi
 [murano]
 url = {{ internal_protocol }}://{{ kolla_internal_fqdn }}:{{ murano_api_port }}
 
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
 
 [oslo_messaging_notifications]
 driver = messagingv2
diff --git a/ansible/roles/neutron/templates/neutron.conf.j2 b/ansible/roles/neutron/templates/neutron.conf.j2
index fe8ed1029b..e1571dc3f6 100644
--- a/ansible/roles/neutron/templates/neutron.conf.j2
+++ b/ansible/roles/neutron/templates/neutron.conf.j2
@@ -49,6 +49,8 @@ min_l3_agents_per_router = {{ min_l3_agents_per_router }}
 service_provider = LOADBALANCERV2:Haproxy:neutron_lbaas.drivers.haproxy.plugin_driver.HaproxyOnHostPluginDriver:default
 {% endif %}
 
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+
 [nova]
 auth_url = {{ keystone_admin_url }}
 auth_type = password
@@ -63,12 +65,6 @@ endpoint_type = internal
 [oslo_concurrency]
 lock_path = /var/lib/neutron/tmp
 
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
-
 [agent]
 root_helper = sudo neutron-rootwrap /etc/neutron/rootwrap.conf
 
diff --git a/ansible/roles/nova/templates/nova.conf.j2 b/ansible/roles/nova/templates/nova.conf.j2
index 792f8d0b58..b3a5d7b845 100644
--- a/ansible/roles/nova/templates/nova.conf.j2
+++ b/ansible/roles/nova/templates/nova.conf.j2
@@ -62,6 +62,8 @@ compute_monitors=nova.compute.monitors.cpu.virt_driver
 {% endif %}
 {% endif %}
 
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+
 [conductor]
 workers = {{ openstack_service_workers }}
 
@@ -98,12 +100,6 @@ admin_tenant_name = service
 api_endpoint = {{ internal_protocol }}://{{ kolla_internal_fqdn }}:{{ ironic_api_port }}/v1
 {% endif %}
 
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
-
 [oslo_concurrency]
 lock_path = /var/lib/nova/tmp
 
diff --git a/ansible/roles/watcher/templates/watcher.conf.j2 b/ansible/roles/watcher/templates/watcher.conf.j2
index 61f1a1959f..5a2a3afda7 100644
--- a/ansible/roles/watcher/templates/watcher.conf.j2
+++ b/ansible/roles/watcher/templates/watcher.conf.j2
@@ -3,6 +3,8 @@ debug = {{ watcher_logging_debug }}
 
 log_dir = /var/log/kolla/watcher
 
+transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+
 {% if service_name == 'watcher-api' %}
 [api]
 host = {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}
@@ -39,9 +41,3 @@ password = {{ watcher_keystone_password }}
 
 [oslo_concurrency]
 lock_path = /var/lib/watcher/tmp
-
-[oslo_messaging_rabbit]
-rabbit_userid = {{ rabbitmq_user }}
-rabbit_password = {{ rabbitmq_password }}
-rabbit_ha_queues = true
-rabbit_hosts = {% for host in groups['rabbitmq'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}