root用户登陆数据库登陆不进去,报以下错误,然后重新修改了密码,具体操作如下:

 配置文件中加了skip-grant-tables,/etc/init.d/mysqld重启之后可以进去了;所以一定是密码的问题,所以我开始改密码

##我们把root@localhost用户删了,然后有新建了这个用户

 

mysql> delete from mysql.user where user='root' and host='localhost';
Query OK, 1 row affected (0.01 sec)
mysql> select user,host from mysql.user;
+-----------+-----------+
| user      | host      |
+-----------+-----------+
| mysql.sys | localhost |

+-----------+-----------+
1 row in set (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> grant all on *.* to 'root'@'localhost' identified by '123456';
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> select user,host from mysql.user;
+-----------+-----------+
| user      | host      |
+-----------+-----------+
| mysql.sys | localhost |
| root      | localhost |
+-----------+-----------+

2 rows in set (0.01 sec)

但是到这还是不行,你用下面的命令会发现一个情况

mysql> select * from mysql.user\G;

Grant显示N--mysql权限架构体系(应该是这么说)是关闭的所以得执行以下操作:

mysql> grant all on *.* to 'root'@'localhost' identified by '123456' with grant option;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

退出mysql,将skip-grant-tables注掉,然后重启mysql。此时在登陆就可以了。