Linux reset MySQL root password detailed

Source: Internet
Author: User
Tags flush mysql in safe mode

Restart the MySQL root password

Methods one, using Mysqladmin

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#./mysqladmin-u root password ' newpassword '

#./mysqladmin-u root-h host_name password ' newpassword '

Usually mysqladmin ' s path is/usr/bin, HOST_NAME is your real host name, e.g. Localhost.localdomain.

The quotes behind the password are not required, but quotation marks are required if the password contains spaces or some special symbols.

Method II, using MySQL SET password command

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#./mysql-u Root

mysql> SET PASSWORD for ' root ' @ ' localhost ' = PASSWORD (' NewPassword ');

mysql> SET PASSWORD for ' root ' @ ' host_name ' = PASSWORD (' NewPassword ');

Method Three, update the user table with the UPDATE statement reset root password

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#./mysql-u Root

mysql> UPDATE mysql.user SET Password = Password (' newpassword ') WHERE user = ' root ';

mysql> FLUSH privileges;

Method Four, start MySQL safe mode reset root password

1, stop the MySQL process

Execution:/etc/init.d/mysql stop, the specific location may vary depending on the system, it may be the path of/etc/init.d/mysql,/etc/init.d/mysqld, or the following direct termination (preferably do not use the following mandatory statement):

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# Killall-term Mysqld

2. Start MySQL in safe mode

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# Mysqld_safe–skip-grant-tables &


# Mysqld_safe--skip-grant-tables >/dev/null 2>&1 &

Tip: Mysqld_safe is generally in the/usr/local/mysql/bin/directory.

3, login MySQL

After the two steps are completed, you can enter MySQL without the password.

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# mysql-u Root


#/usr/local/mysql/bin/mysql-u Root MySQL

4, change the root password

The following sentences are executed sequentially:

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Use MySQL;

Select Host, user, password from user;

Update user set Password=password ("NewPassword") where user= "root"

Flush privileges;

5. Exit the console and restart the MySQL service

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Service mysqld Restart


/etc/init.d/mysql restart

Forget the MySQL root password

First, manual modification

1. Stop MySQL Service

Execution:/etc/init.d/mysql stop, not necessarily on your machine/etc/init.d/mysql may also be/etc/init.d/mysqld

2, skip verification to start MySQL

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/usr/local/mysql/bin/mysqld_safe--skip-grant-tables >/dev/null 2>&1 &

Note: If the location of the Mysqld_safe is not the same as the above need to be modified to your, if not clear can be found with the Find command.

3. Reset Password

Wait a minute and then execute:/usr/local/mysql/bin/mysql-u root MySQL

When the MySQL prompt appears, enter: Update user Set password = password (' Password to set ') where user = ' root ';

After carriage return carries out: flush privileges; Refresh the MySQL system permissions related tables.  Re-execution: exit; Exit.

4, restart MySQL

Kill MySQL Process: Killall mysqld

Restart Mysql:/etc/init.d/mysql start

Second, use the Reset script

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wget Http://;sh

Suitable for LNMP or MySQL admin scripts in/etc/init.d/mysql and MySQL installed in/usr/local/mysql/. Otherwise, you need to modify the script before you execute it

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Sh reset_

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