sudo mysqld --skip-grant-tables --user=root
mysql -uroot
flush-privileges;
或
FLUSH PRIVILEGES;
ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';
或
SET PASSWORD FOR 'root'@'localhost' = PASSWORD('MyNewPass');
flush-privileges;
或
FLUSH PRIVILEGES;
exit
sudo ps aux | grep -i "mysql"
sudo kill -9 9096
启动MySQL：
sudo systemctl start mysqld
若失败，检查日志：
sudo vi /var/log/mysqld.log
如果是Could not open unix socket lock file /var/lib/mysql/mysql.sock.lock
则：
sudo rm /var/lib/mysql/mysql.sock
sudo rm /var/lib/mysql/mysql.sock.lock
启动后修改密码，如果出现报错：Your password does not satisfy the current policy requirements
则执行：
mysql> set global validate_password_policy=0;