Retrieve the root password of MySQL

Experimental introduction: MySQL root password is missing, unable to log in. Need to reset its root password

Environment Introduction: Compiling and installing MySQL

This blog introduction to retrieve the MySQL root password is mysql based on the compilation installation, if it is a multi-instance of the MySQL root password recovery parameters and a little bit different (see below)

The main difference is the start command after stopping the MySQL service

Compiled and installed MySQL:mysqld_safe--skip-grant-tables--user=mysql &

Multi-instance MySQL:mysqld_safe--defaults-file=/data/3306/my.cnf--skip-grant-table &

In a multi-instance environment, you need to add a parameter to indicate the database that needs to change the password of the my.cnf file, after modifying the password, you can use the Killall command to kill the MYSQLD service, login to specify Mysql.sock

View MySQL version

MySQL--version

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Stop MySQL Service

/etc/init.d/mysqld stop

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Join the parameters to start the MySQL service

Mysqld_safe--skip-grant-tables--user=mysql &

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Enter MySQL on the command line to log in

Mysql

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Executes the MySQL command, resets the MSYQL root password, and refreshes the permissions

Update Mysql.user Set Password=password ("123456") where user= ' root ' and host= ' localhost ';

Flush privileges;

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After the permission is executed, exit the MySQL command line via \q.

The shutdown command is required to shut down the MySQL service because it was not started by mysqld.

mysqladmin-uroot-p123456 shutdown

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Start the MySQL service

/etc/init.d/mysqld start

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Log in to MySQL service with the password you just changed, the password modification is successful.

mysql-uroot-p123456

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Ok,mysql root password has been successfully reset

This article is from the "LULU" blog, make sure to keep this source http://aby028.blog.51cto.com/5371905/1895200

Retrieve the root password of MySQL