mysql增加新用户无法登陆解决方法

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。

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：

删除数据库空用户

[root@bogon ~]# mysql -uroot -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.6.35 MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> SELECT user,host,password FROM mysql.user;

+------+-----------+-------------------------------------------+

| user | host | password |

+------+-----------+-------------------------------------------+

| root | localhost | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |

| root | bogon | |

| root | 127.0.0.1 | |

| root | ::1 | |

| | localhost | |

| | bogon | |

+------+-----------+-------------------------------------------+

6 rows in set (0.00 sec)

mysql> delete from mysql.user where user='';

Query OK, 2 rows affected (0.02 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

mysql> exit

意思是删除匿名用户。