diff --git a/doc/source/admin/install/install_ubuntu.rst b/doc/source/admin/install/install_ubuntu.rst
index f7090aed..ed35e591 100644
--- a/doc/source/admin/install/install_ubuntu.rst
+++ b/doc/source/admin/install/install_ubuntu.rst
@@ -302,18 +302,9 @@ information.
 For etcd installation, you can refer to
 `OpenStack Installation Guide <https://docs.openstack.org/install-guide/environment-etcd.html>`_.
 
-#. Config kubernetes in Qinling. Refer to
-   `Config Qinling using existing Kubernetes cluster <https://docs.openstack.org/qinling/latest/admin/install/config_kubernetes.html>`_.
-
-#. Config etcd. In the ``[etcd]`` section of ``/etc/qinling/qinling.conf``,
-   configure the IP address and port that etcd service is listening on.
-
-   .. code-block:: ini
-
-      [etcd]
-      ...
-      host = 10.0.0.9
-      port = 2379
+Qinling could also connect with existing kubernetes and etcd services,
+`here <https://docs.openstack.org/qinling/latest/admin/install/config_kubernetes.html>`_
+is the guide for the detailed configuration.
 
 Finalize installation
 ---------------------
diff --git a/doc/source/contributor/development-environment-devstack.rst b/doc/source/contributor/development-environment-devstack.rst
index 6cb3de6c..e0c1a6fe 100644
--- a/doc/source/contributor/development-environment-devstack.rst
+++ b/doc/source/contributor/development-environment-devstack.rst
@@ -85,13 +85,19 @@ Here are several things you could customize:
 * Devstack will set up a new kubernetes cluster and re-use etcd service inside
   the cluster for Qinling services, which means you don't need to add etcd to
   the enabled services list in the ``local.conf`` file.
-* If you already have an existing kubernetes cluster, add
-  ``QINLING_INSTALL_K8S=False`` to the ``local.conf`` file. Go to
+* If you already have an existing kubernetes/etcd cluster, add
+  ``QINLING_INSTALL_K8S=False`` to the ``local.conf`` file. You need to
+  manually config Qinling services after devstack completes, go to
   `Config Qinling with existing Kubernetes cluster <https://docs.openstack.org/qinling/latest/admin/install/config_kubernetes.html>`_
-  for more details.
-* If you want to interact with Qinling in Horizon, add
-  ``enable_plugin qinling-dashboard https://git.openstack.org/openstack/qinling-dashboard``
-  in the ``local.conf`` file.
+  for more configuration details.
+* If you want to interact with Qinling in Horizon dashboard, add the following
+  line to the ``local.conf`` file.
+
+    .. code-block:: console
+
+        enable_plugin qinling-dashboard https://git.openstack.org/openstack/qinling-dashboard
+
+    .. end
 
 Running devstack
 ----------------