#mysql錯誤：(密碼不正確，需要重置密碼)

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

#編輯配置文件

[root@m1 mysql]# vi /roobo/server/mysql/my.cnf

[mysqld]

skip-grant-tables

#修改完后重啟服務

[root@m1 mysql]# /etc/init.d/mysqld restart

#登錄數據庫

[root@m1 mysql]# mysql

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

Your MySQL connection id is 1

Server version: 5.6.24-log Source distribution

Copyright (c) 2000, 2015, 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>

mysql>?use?mysql;

mysql>?update?user?set?password=password("你的新密碼")?where?user="root";

mysql>?flush?privileges;

mysql>?quit

#再把vi my.cnf 配置文件中下面參數刪除。

[mysqld]

skip-grant-tables

#修改完后重啟服務

[root@m1 mysql]# /etc/init.d/mysqld restart

#再用設置的密碼登錄

mysql -uroot -p

passwd:******

mysql error 1044(42000)錯誤

[root@m1 ~]# mysql -uroot -p

Enter password:

ERROR 1049 (42000): Unknown database '127.0.0.1'

[root@m1 ~]# mysql -uroot -p

Enter password:

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

Your MySQL connection id is 18

Server version: 5.6.24-log Source distribution

Copyright (c) 2000, 2015, 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.

#授權

mysql> grant all on work.* to work@'192.168.1.4' identified by 'juan3652014';

ERROR 1044 (42000): Access denied for user 'root'@'localhost' to database 'work'

原因：? 授權需要WITH GRANT OPTION 才能授權，否則會報。

mysql> show grants for root@'localhost';

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

| Grants for root@localhost |

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

| GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY PASSWORD '*F109C974766912D490ECD7E3C8754542FC773A49' |

| GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION

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

2 rows in set (0.00 sec)

解決方法：

#登錄mysql

mysql -uroot -p -h 127.0.0.1

mysql> use mysql

Database changed

mysql> select user,host from user;

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

| user | host |

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

| root | 127.0.0.1 |

| rep | 192.168.1.% |

| work | 192.168.1.4 |

| root | localhost |

| zabbix | localhost |

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

5 rows in set (0.00 sec)

#授權成功

grant all on work.* to work@'192.168.1.4' identified by 'juan3652014';

flush privileges;

如上所示，root@localhost賬號沒有WITH GRANT OPTION選項，關于WITH GRANT OPTION選項，如果想讓授權的用戶，也可以將這些權限授予給其他用戶，需要選項“WITH GRANT OPTION“。也就是說有這個選項就可以將權限傳遞給第三方。這也是上面給其它用后授權報錯的原因，如果以root@127.0.0.1登錄(此賬號擁有WITHGRANT OPTION選項)，創建用戶并授權就不會有這個錯誤。

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