* 下载安装mysql

https://dev.mysql.com/downloads/mysql/5.7.html#downloads

wget https://cdn.mysql.com/Downloads/MySQL-5.7/mysql-boost-5.7.23.tar.gz

 

方法1： 用SET PASSWORD命令
　　mysql -u root
　　mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');
方法2：用mysqladmin
　　mysqladmin -u root password "newpass"
　　如果root已经设置过密码，采用如下方法
　　mysqladmin -u root password oldpass "newpass"
方法3： 用UPDATE直接编辑user表
　　mysql -u root
　　mysql> use mysql;
　　mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';
　　mysql> FLUSH PRIVILEGES;
在丢失root密码的时候，可以这样
　　mysqld_safe --skip-grant-tables &
　　mysql -u root mysql
　　mysql> UPDATE user SET password=PASSWORD("new password") WHERE user='root';
　　mysql> FLUSH PRIVILEGES;

 

phpmyadmin 设置密码

/opt/lampp/phpmyadmin/config.inc.php

/* Authentication type */
$cfg['Servers'][$i]['auth_type'] = 'cookie';
$cfg['Servers'][$i]['user'] = 'root';
$cfg['Servers'][$i]['password'] = 'xxx';
/* Server parameters */
$cfg['Servers'][$i]['host'] = '47.93.27.106';
$cfg['Servers'][$i]['compress'] = false;
$cfg['Servers'][$i]['AllowNoPassword'] = false;

* mysql 导出数据库

mysqldump -uroot -hlocalhost -p --single-transaction --master-data --databases studyonline > studyonline.sql

* root远程访问授权

grant all privileges on *.* to root@'172.17.182.111' identified by '密码';

flush privileges;

 

mysql安装教程

https://blog.51cto.com/13873498/2288314