碰到哪些Bug可以留言到評論區，我會定期查看BUG並給予反饋
1. 配置keystone時:
su -s /bin/sh -c "keystone-manage db_sync" keystone
2017-11-05 18:04:23.307 7286 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed. 10 attempts left.
2017-11-05 18:04:33.315 7286 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed. 9 attempts left.
2017-11-05 18:04:43.322 7286 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed. 8 attempts left.
2017-11-05 18:04:53.330 7286 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed. 7 attempts left.
......出現該錯誤，多半是自己的hosts文件沒有配置。
2. 當service apache2 restart時出現：
localhost.localdomain for ServerName
(98)Address already in use: make_sock: could not bind to address [::]:5000
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:5000
no listening sockets available, shutting down
Unable to open logs重啓電腦即可，一般是有進程佔用了該端口號
3. 當創建的linux系統的hostname名稱一樣時，會導致控制節點無法識別就算節點的名稱，需要修改/etc/hostname和/etc/hosts文件，方法：修改/etc/hosts中127.0.1.1的名稱，在其名稱後加空格，添加新的名稱，刪去/etc/hostname的名稱，換成127.0.1.1後面添加的新名稱。該問題常見與虛擬機構建Openstack，其默認的hostname是一樣的。