mysql5.6忘記資料庫的root密碼,重置密碼

阿新 • • 發佈：2019-01-17

mysql5.6忘記資料庫的root密碼：

[[email protected] ~]# mysql -uroot -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

檢視當前安裝的mysql版本：
[email protected] ~]# rpm -qa | grep MySQL
MySQL-server-5.6.15-1.el6.x86_64
MySQL-client-5.6.15-1.el6.x86_64
MySQL-shared-compat-5.6.15-1.el6.x86_64

MySQL-devel-5.6.15-1.el6.x86_64
perl-DBD-MySQL-4.022-1.el6.rfx.x86_64

停止mysql服務：
[[email protected] ~]# service mysql stop
Shutting down MySQL.. SUCCESS!

進入到skip-grant-tables模式：

[[email protected] ~]# mysqld_safe --skip-grant-tables
140211 15:37:49 mysqld_safe Logging to '/var/lib/mysql/oraserver139.err'.

140211 15:37:49 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql

現在就不需要密碼就可以進入mysql了：

[[email protected] ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.15 MySQL Community Server (GPL)

Copyright (c) 2000, 2013, 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.

進入mysql系統資料庫：
mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed

修改root賬戶密碼：
mysql> update user set password=password("12345") where user="root";
Query OK, 4 rows affected (0.02 sec)
Rows matched: 4 Changed: 4 Warnings: 0

重新整理許可權：
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> exit
Bye

停止mysql程序：

[1]+ Stopped mysqld_safe --skip-grant-tables

啟動mysql：

[[email protected] ~]# service mysql start
Starting MySQL SUCCESS!

使用剛才修改的密碼進入mysql：

[[email protected] ~]# mysql -uroot -p12345
Warning: Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.6.15

Copyright (c) 2000, 2013, 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> show databases;
ERROR 1820 (HY000): You must SET PASSWORD before executing this statement

mysql> SET PASSWORD = PASSWORD('12345');
Query OK, 0 rows affected (0.00 sec)

mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.00 sec)

修改完成；

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