Openstack DashBoard 无法正常登录

  "An error occurred authenticating. Please try again later." " not able to authenticate with any project"

版本 Juno， ubuntu 14.04

查看/var/log/keystone/keystone-all.log

发现报错 Too many connections

打开/etc/mysql/my.cnf

文件里注释掉了这一行，或者太小，可以改大一些，恢复正常

max_connection = 100