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mysql增加新用户无法登陆解决方法

　　本文标签：mysql增加新用户,无法登陆

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
但使用用户登陆失败：
root@controller:'# mysql -h localhost -ukeystone -ppassword
ERROR 1045 (28000): Access denied for user keystone@localhost (using password: YES)
解决方法：
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！