如何找到我的MySQL根密码? [英] How do I find out my root MySQL password?

问题描述

我刚刚在Ubuntu上安装了MySQL，root用户无法登录:)

I just installed MySQL on Ubuntu and the root user can't log in :)

如何恢复或找出我的密码?使用空白输入密码不起作用.

How can I recover or find out my password? Using blank for password does not work.

推荐答案

您可以通过使用--skip-grant-tables运行服务器来重置根密码，并通过以root身份(或使用sudo)运行以下命令来不使用密码登录:

You can reset the root password by running the server with --skip-grant-tables and logging in without a password by running the following as root (or with sudo):

# service mysql stop
# mysqld_safe --skip-grant-tables &
$ mysql -u root

mysql> use mysql;
mysql> update user set authentication_string=PASSWORD("YOUR-NEW-ROOT-PASSWORD") where User='root';
mysql> flush privileges;
mysql> quit

# service mysql stop
# service mysql start
$ mysql -u root -p

现在，您应该可以使用新密码以root用户身份登录.

Now you should be able to login as root with your new password.

还可以在重设密码的用户的/home/$USER/.mysql_history或/root/.mysql_history中找到重设密码的查询，但是以上操作始终有效.

It is also possible to find the query that reset the password in /home/$USER/.mysql_history or /root/.mysql_history of the user who reset the password, but the above will always work.

注意:在MySQL 5.7之前，该列称为password而不是authentication_string.将上面的行替换为

Note: prior to MySQL 5.7 the column was called password instead of authentication_string. Replace the line above with

mysql> update user set password=PASSWORD("YOUR-NEW-ROOT-PASSWORD") where User='root';

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