diff --git a/.releasenotes/notes/parametric-telemetry-hostnames-06e14467d9a9077d.yaml b/.releasenotes/notes/parametric-telemetry-hostnames-06e14467d9a9077d.yaml
new file mode 100644
index 0000000..e75d549
--- /dev/null
+++ b/.releasenotes/notes/parametric-telemetry-hostnames-06e14467d9a9077d.yaml
@@ -0,0 +1,15 @@
+---
+upgrades:
+  - mongodb.server.cluster no longer hardcodes the telemetry nodes' hostnames
+    in favor of using `openstack_telemetry_node{01,02,03}_hostname` params,
+    allowing custom hostnames to be used.
+
+    Configuration example:
+
+    .. code-block:: yaml
+
+        parameters:
+          _param:
+            openstack_telemetry_node01_hostname: mdb01
+            openstack_telemetry_node02_hostname: mdb02
+            openstack_telemetry_node03_hostname: mdb03
diff --git a/ceilometer/agent/polling/default.yml b/ceilometer/agent/polling/default.yml
new file mode 100644
index 0000000..47b2d1d
--- /dev/null
+++ b/ceilometer/agent/polling/default.yml
@@ -0,0 +1,8 @@
+parameters:
+  ceilometer:
+    agent:
+      polling:
+        sources:
+          default_pollsters:
+            meters: ${_param:ceilometer_agent_default_polling_meters}
+            interval: ${_param:ceilometer_agent_default_polling_interval}
\ No newline at end of file
diff --git a/ceilometer/server/backend/default.yml b/ceilometer/server/backend/default.yml
new file mode 100644
index 0000000..8842e11
--- /dev/null
+++ b/ceilometer/server/backend/default.yml
@@ -0,0 +1,12 @@
+classes:
+- service.ceilometer.server.publisher.gnocchi
+- service.ceilometer.server.publisher.panko
+parameters:
+  # gnocchi and panko are default backends for Ceilometer since Pike
+  # they are incompatible with any legacy database publisher backends
+  ceilometer:
+    server:
+      database: ~
+      publisher:
+        default:
+          enabled: false
diff --git a/ceilometer/server/coordination/redis.yml b/ceilometer/server/coordination/redis.yml
index e013e0f..e8610f3 100644
--- a/ceilometer/server/coordination/redis.yml
+++ b/ceilometer/server/coordination/redis.yml
@@ -1,7 +1,7 @@
 classes:
 - service.redis.server.single
 parameters:
-  aodh:
+  ceilometer:
     server:
       coordination_backend:
         url:  redis://${_param:single_address}:6379/${_param:cluster_node01_address}
diff --git a/keystone/client/service/keystone.yml b/keystone/client/service/keystone.yml
index d9092e0..ba116f8 100644
--- a/keystone/client/service/keystone.yml
+++ b/keystone/client/service/keystone.yml
@@ -2,6 +2,9 @@
   _param:
     cluster_public_protocol: https
     keystone_service_protocol: http
+    keystone_public_path: "/v2.0"
+    keystone_internal_path: "/v2.0"
+    keystone_admin_path: "/v2.0"
   keystone:
     client:
       server:
@@ -15,12 +18,12 @@
                 public_address: ${_param:cluster_public_host}
                 public_protocol: ${_param:cluster_public_protocol}
                 public_port: 5000
-                public_path: '/v2.0'
+                public_path: ${_param:keystone_public_path}
                 internal_address: ${_param:keystone_service_host}
                 internal_port: 5000
-                internal_path: '/v2.0'
+                internal_path: ${_param:keystone_internal_path}
                 internal_protocol: ${_param:keystone_service_protocol}
                 admin_address: ${_param:keystone_service_host}
                 admin_port: 35357
-                admin_path: '/v2.0'
+                admin_path: ${_param:keystone_admin_path}
                 admin_protocol: ${_param:keystone_service_protocol}
diff --git a/mongodb/server/cluster.yml b/mongodb/server/cluster.yml
index f3c16d6..02294c4 100644
--- a/mongodb/server/cluster.yml
+++ b/mongodb/server/cluster.yml
@@ -2,10 +2,13 @@
 - service.mongodb.server.cluster
 parameters:
   _param:
+    openstack_telemetry_node01_hostname: mdb01
+    openstack_telemetry_node02_hostname: mdb02
+    openstack_telemetry_node03_hostname: mdb03
     mongodb_server_replica_set: mongodb
-    mongodb_master: mdb01
+    mongodb_master: ${_param:openstack_telemetry_node01_hostname}
     mongodb_server_members:
-    - host: mdb01
+    - host: ${_param:openstack_telemetry_node01_hostname}
       priority: 2
-    - host: mdb02
-    - host: mdb03
+    - host: ${_param:openstack_telemetry_node02_hostname}
+    - host: ${_param:openstack_telemetry_node03_hostname}