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+============================
+OpenStack Certification Task
+============================
+
+How To Validate & Run Task
+--------------------------
+
+To validate task with your own parameters run:
+
+.. code-block:: console
+
+  $ rally task validate task.yaml --task-args-file task_arguments.yaml
+
+
+Task start task with your own parameters run:
+
+.. code-block:: console
+
+  $ rally task start task.yaml --task-args-file task_arguments.yaml
+
+
+Task Arguments
+--------------
+
+File task_arguments.yaml contains all task options:
+
++------------------------+----------------------------------------------------+
+| Name                   | Description                                        |
++------------------------+----------------------------------------------------+
+| service_list           | List of services which should be tested            |
+| smoke                  | Dry run without load from 1 user                   |
+| use_existing_users     | In case of testing cloud with r/o Keystone e.g. AD |
+| image_name             | Images name that exist in cloud                    |
+| flavor_name            | Flavor name that exist in cloud                    |
+| glance_image_location  | URL of image that is used to test Glance upload    |
+| users_amount           | Expected amount of users                           |
+| tenants_amount         | Expected amount of tenants                         |
+| controllers_amount     | Amount of OpenStack API nodes (controllers)        |
++------------------------+----------------------------------------------------+
+
+All options have default values, hoverer user should change them to reflect
+configuration and size of tested OpenStack cloud.