openstack Train 版本dashaboard 404问题

openstack Train 版按照官方文档安装后

1.访问/dashboard后跳转到/auth/login报404（操作下面2步可以解决dashboard访问404问题，请跳过此步骤）

解决方法如下：

cd /usr/share/openstack-dashboard
python manage.py make_web_conf --apache > /etc/httpd/conf.d/openstack-dashboard.conf

2.建立策略文件（policy.json）的软链接，否则登录到dashboard将出现权限错误

解决方法如下：

ln -s /etc/openstack-dashboard /usr/share/openstack-dashboard/openstack_dashboard/conf

3.身份管理里面的项目、用户、组和角色都无法打开，日志提示：

Daemon process called 'keystone-public' cannot be accessed by this WSGI application: /usr/bin/keystone-wsgi-public

解决方法如下：

编辑以下文件，找到WEBROOT = '/' 修改为WEBROOT = '/dashboard' (官方未提及坑点之一)
vim /usr/share/openstack-dashboard/openstack_dashboard/defaults.py
vim /usr/share/openstack-dashboard/openstack_dashboard/test/settings.py
vim /usr/share/openstack-dashboard/static/dashboard/js/9937cc9f2cae.js