Linux下mysql忘記管理員密碼的解決方法

當(dāng)你的MySQL管理員密碼忘記了，怎么辦？
來看看下面
在開啟mysql服務(wù)的適時候，使用--skip-grant-tables 參數(shù)跳過權(quán)限檢查啟動mysql
[root@potato Desktop]# mysqld_safe --skip-grant-tables
161209 00:01:29 mysqld_safe Logging to '/data/mysql/mytest_3306/data/error.log'.
161209 00:01:29 mysqld_safe Starting mysqld daemon with databases from /data/mysql/mytest_3306/data
直接mysql就可以登陸（ps：登陸進(jìn)去就擁有管理員權(quán)限）
[root@potato Desktop]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.34-log Source distribution

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.
開始改密碼，不過這里有個地方要注意
若是直接用set的方式改密碼，會報(bào)錯，因?yàn)槭褂昧?-skip-grant-table，所以沒辦法用
root@localhost:mysql.sock  00:02:17 [(none)]>SET PASSWORD FOR 'root'@'localhost' = PASSWORD('root');
ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement
所以只能直接改mysql.user權(quán)限表了
root@localhost:mysql.sock  00:05:52 [(none)]>use mysql
Database changed
root@localhost:mysql.sock  00:06:10 [mysql]> UPDATE user SET password = password ('root') where user = 'root';
Query OK, 0 rows affected (0.05 sec)
Rows matched: 1  Changed: 0  Warnings: 0
修改完畢便關(guān)閉服務(wù)
root@localhost:mysql.sock  00:06:16 [mysql]>quit
Bye
[root@potato Desktop]# mysqladmin shutdown
然后正常啟動mysql服務(wù)，再用修改后的密碼登陸
[root@potato Desktop]# mysqld_safe
[root@potato Desktop]# mysql -uroot -proot
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 1
Server version: 5.6.34-log Source distribution

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.

root@localhost:mysql.sock  00:08:32 [(none)]>

看，已經(jīng)成功登陸進(jìn)去了
ps：mysql管理員忘記密碼后，是不是再也不用擔(dān)心了？？？

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