在用root使用者登入mysql時發現密碼錯了

[root@gk ~]# mysql -u root -p
Enter password:
ERROR 1045 (28000): Access denied for user (using password: NO)

解決方法

1.停止mysqld服務

[root@gk ~]# service mysqld stop
停止 mysqld： [確定]

2.執行mysqld_safe --skip-grant-tables

[root@gk ~]# mysqld_safe --skip-grant-tables
140607 22:21:50 mysqld_safe Logging to '/var/log/mysqld.log'.
140607 22:21:50 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql

3.登入mysql

[root@gk ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.1.71 Source distribution

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.

4.切換到mysql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

5.更新密碼

mysql> update user set password=password('redhat')where user='root';
Query OK, 2 rows affected (0.00 sec)
Rows matched: 3 Changed: 2 Warnings: 0

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> exit
Bye

6.重新啟動mysqld服務

[root@gk ~]# service mysqld restart
停止 mysqld： [確定]
正在啟動 mysqld： [確定]

7.用新密碼進行登入

[root@gk ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.71 Source distribution

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忘記root密碼後的處理

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