openstack pike dashboard仪表盘没法登录

 

问题现象 :

浏览器输入 http://controller/dashboard 访问仪表盘没法登录，提示“出错啦！

遇到异常状况，请刷新。如需帮助请联系管理员。”

/var/log/httpd/error_log 中一直报如下错误:

... ...

[Wed Nov 01 06:36:08.539559 2017] [:error] [pid 16283] self.create

[Wed Nov 01 06:36:08.539566 2017] [:error] [pid 16283] File "/usr/lib/python2.7/site-packages/django/contrib/sessions/backends/cache.py", line 48, in create

[Wed Nov 01 06:36:08.539569 2017] [:error] [pid 16283] "Unable to create a newsession key. "

[Wed Nov 01 06:36:08.539577 2017] [:error] [pid 16283] RuntimeError: Unable to create a new session key. It is likely that the cache is unavailable.

[Wed Nov 01 02:41:09.576741 2017] [mpm_prefork:notice] [pid 16278] AH00170: caught SIGWINCH, shutting down gracefully

解决办法:

更改dashboard的local_settings配置文件并重启httpd和memcached，刷新后可正常登录。

?

1. # vim /etc/openstack-dashboard/local_settings
2. #SESSION_ENGINE = 'django.contrib.sessions.backends.cache'
3. SESSION_ENGINE = 'django.contrib.sessions.backends.file'
4. # systemctl restart httpd memcached
5. # systemctl status httpd memcached