第一步，登錄horizon，進入下圖所示的頁面。

看到那個“下載OpenStack RC文件”的按鈕了么？看到了么？看到了么？別光顧著點頭了，還等啥？!
打開下載的文件(這里舉個例子，我以admin用戶登錄的)，對內容稍作修改(主要是最后那個password，改成你登錄horizon的密碼，其他內容不要改)：
#!/bin/bash

# With the addition of Keystone, to use an openstack cloud you should
# authenticate against keystone, which returns a **Token** and **Service
# Catalog**. The catalog contains the endpoint for all services the
# user/tenant has access to - including nova, glance, keystone, swift.
#
# *NOTE*: Using the 2.0 *auth api* does not mean that compute api is 2.0. We
# will use the 1.1 *compute api*