ucloud-host can not be started by using hostname

docs/source/introduction/installation.rst

@@ -184,17 +184,3 @@ profile e.g *~/.profile*
     alias uotp='cd /root/uotp/ && pipenv run python app.py'
 
 and run :code:`source ~/.profile`
-
-
-Running ucloud
-~~~~~~~~~~~~~~
-
-.. code-block:: sh
-
-    ucloud api
-
-We need to create a host by executing the following command
-
-.. code-block:: sh
-    
-    

docs/source/introduction/usage.rst

@@ -0,0 +1,35 @@
+Usage
+=====
+
+Start API
+----------
+
+.. code-block:: sh
+
+    ucloud api
+
+Host Creation
+-------------
+
+Currently, we don't have any host (that runs virtual machines). 
+So, we need to create it by executing the following command
+
+.. code-block:: sh
+    
+    ucloud-cli host create --hostname ungleich.ch --cpu 32 --ram '32GB' --os-ssd '32GB'
+
+You should see something like the following
+
+.. code-block:: json
+
+    {
+        "message": "Host Created"
+    }
+
+Start Scheduler
+---------------
+
+.. code-block:: sh
+
+    ucloud scheduler
+