mysql 配置远程访问

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#登陆mysql
$ mysql -uroot -p
mysql> use mysql;
mysql> update user set host = '%' where user = 'root';
mysql> select host, user from user;
+-----------+------------------+
| host      | user             |
+-----------+------------------+
| %         | root             |
| localhost | debian-sys-maint |
| localhost | mysql.session    |
| localhost | mysql.sys        |
+-----------+------------------+
4 rows in set (0.00 sec)
#ok 退出MySQL 重启服务
mysql> quit;
$ service mysql restart
#发现客户端远程还是连接不上 继续修改mysql.cnf配置文件
#需要root权限，配置文件是只读的
$ sudo vim /etc/mysql/mysql.conf.d/mysqld.cnf
#往下翻，注释掉这一行,保存退出
# bind-address          = 127.0.0.1
#重启服务
$ service mysql restart;
#ok 可以了
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#允许所有用户远程访问 修改用户名和密码为你自己的
mysql> GRANT ALL PRIVILEGES ON *.* TO 'USERNAME'@'%' IDENTIFIED BY 'PASSWORD' WITH GRANT OPTION;
#允许单个ip 修改用户名和密码为你自己的
mysql> GRANT ALL PRIVILEGES ON *.* TO 'USERNAME'@'1.2.3.4' IDENTIFIED BY 'PASSWORD' WITH GRANT OPTION;
#最后
mysql> FLUSH PRIVILEGES;