Openstack安装Dashboard之后，浏览器无法打开页面 500 Internal Server Error

在手动部署Openstack时，按照官方文档安装Dashboard，并进行了配置后，发现用浏览器无法打开界面

页面显示：

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

查看日志信息： cat /var/log/httpd/error_log

[Wed Jun 20 15:39:10.090584 2018] [core:error] [pid 11902] [client 192.168.29.1:54841] Script timed out before returning headers: django.wsgi
[Wed Jun 20 15:39:23.100375 2018] [core:error] [pid 11901] [client 192.168.29.1:54878] Script timed out before returning headers: django.wsgi

根据日志报错信息，可能与django.wsgi有关。百度搜索到解决方法

修改   /etc/httpd/conf.d/openstack-dashboard.conf  文件
在WSGISocketPrefix run/wsgi下面加一行代码： 
WSGIApplicationGroup %{GLOBAL}

保存退出，然后重启httpd服务。

问题得到解决