今天安装openstack folsom版本，安装完mysql，为各个服务增加对应的数据库和用户后，发现 无法使用新增的用户登陆mysql。我增加用户的方法如下： mysql -uroot -p$MYSQL_PASS <<EOF CREATE DATABASE nova; GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' IDENTIFIED BY '$MYSQL_PASS'; CREATE DATABASE glance; GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' IDENTIFIED BY '$MYSQL_PASS'; CREATE DATABASE keystone; GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'%'IDENTIFIED BY '$MYSQL_PASS'; CREATE DATABASE cinder; GRANT ALL PRIVILEGES ON cinder.* TO 'cinder'@'%'IDENTIFIED BY '$MYSQL_PASS'; CREATE DATABASE quantum; GRANT ALL PRIVILEGES ON quantum.* TO 'quantum'@'%'IDENTIFIED BY '$MYSQL_PASS'; FLUSH PRIVILEGES; EOF [b]但使用用户登陆失败[/b]： root@controller:~# mysql -h localhost -ukeystone -ppassword ERROR 1045 (28000): Access denied for user 'keystone'@'localhost' (using password: YES) [b]解决方法[/b]： 增加普通用户后，执行： mysql> use mysql mysql> delete from user where user=''; mysql> flush privileges; 意思是删除匿名用户。 OK，搞定，enjoy！