你可以查看mysql根密码，好吧，我已经在mysql 5.5上尝试过了，所以不知道其他新版本是否工作良好

nano ~/.my.cnf

使用Debian / Ubuntu mysql包，可以使用Debian -sys- maintenance用户登录，该用户拥有所有的权限，密码保存在/etc/mysql/ Debian .cnf文件中

mysql服务器安装后的默认密码是:mysql

系统:

中佐的Linux 7 位于华盛顿市郊1414区

过程:

Open two shell sessions, logging in to one as the Linux root user and the other as a nonroot user with access to the mysql command. In your root session, stop the normal mysqld listener and start a listener which bypasses password authentication (note: this is a significant security risk as anyone with access to the mysql command may access your databases without a password. You may want to close active shell sessions and/or disable shell access before doing this): # systemctl stop mysqld # /usr/sbin/mysqld --skip-grant-tables -u mysql & In your nonroot session, log in to mysql and set the mysql root password: $ mysql mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('MyNewPass'); Query OK, 0 rows affected, 1 warning (0.01 sec) mysql> quit; In your root session, kill the passwordless instance of mysqld and restore the normal mysqld listener to service: # kill %1 # systemctl start mysqld In your nonroot session, test the new root password you configured above: $ mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. ... mysql>

您无法查看散列后的密码;你唯一能做的就是重置!

停止MySQL:

sudo service mysql stop

or

$ sudo /usr/local/mysql/support-files/mysql.server stop

以安全模式启动:

$ sudo mysqld_safe --skip-grant-tables

(上面一行是整个命令)

这将是一个持续的命令，直到进程结束，所以打开另一个shell/终端窗口，登录时不需要密码:

$ mysql -u root

mysql> UPDATE mysql.user SET Password=PASSWORD('password') WHERE User='root';

MySQL 5.7及以上版本:

mysql> use mysql; 
mysql> update user set authentication_string=password('password') where user='root'; 

退出MySQL命令行:

mysql> exit 

在正常模式下重启MySQL，首先停止安全模式实例:

$ mysqladmin -u root -p shutdown   # (when prompted, enter the new password just set)
$ sudo service mysql start

or

$ sudo /usr/local/mysql/support-files/mysql.server start

你的新密码是“password”。

我被这个问题困扰了几分钟，下面是唯一可行的解决方案: https://phoenixnap.com/kb/access-denied-for-user-root-localhost

sudo mysql ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password Mysql -u root -p