系統Ubuntu16.04 LTS

1、開放3306端口

查看端口狀態:

netstat -an|grep 3306

tcp??????? 0????? 0 127.0.0.1:3306????????? 0.0.0.0:*?????????????? LISTEN

目前只有本機可以訪問

輸入指令:

sudo vim /etc/mysql/mysql.conf.d/mysqld.cnf

如果之前配置過全局配置文件,也可輸入指令:

sudo vim /etc/mysql/my.cnf

修改文件,找到下面那行,在bind前面加一個#

bind-address??????????? = 127.0.0.1

:wq退出

重啟MySQL:

sudo /etc/init.d/mysql restart

[ ok ] Restarting mysql (via systemctl): mysql.service.

查看端口狀態:

netstat -an|grep 3306

tcp6?????? 0????? 0 :::3306???????????????? :::*??????????????????? LISTEN

至此端口放開了

2、下面MySQL新建遠程連接用戶

新建用戶名密碼開放遠程連接(對所有局域網內主機)：

GRANT ALL PRIVILEGES ON *.* TO ‘myuser‘@‘%‘ IDENTIFIED BY ‘mypassword‘ WITH GRANT OPTION;

新建用戶名密碼開放遠程連接(對局域網內指定IP)

GRANT ALL PRIVILEGES ON *.* TO ‘myuser‘@‘192.168.1.3‘ IDENTIFIED BY ‘mypassword‘ WITH GRANT OPTION;

刪除用戶：

use mysql;

delete from user where user=‘admin‘ and host=‘%‘;

新建無權限用戶:

grant usage on *.* to ‘foreigner‘@‘%‘ identified by ‘foreigner‘;

增加其權限:

grant all privileges on db.* to ‘foreigner‘@‘%‘;

撤回權限:

revoke all privileges on db.* from ‘foreigner‘@‘%‘;

查看權限:

mysql> show grants for ‘foreigner‘@‘%‘;

+-----------------------------------------------------+

| Grants for foreigner@%????????????????????????????? |

+-----------------------------------------------------+

| GRANT USAGE ON *.* TO ‘foreigner‘@‘%‘?????????????? |

| GRANT ALL PRIVILEGES ON `soso`.* TO ‘foreigner‘@‘%‘ |

+-----------------------------------------------------+

2 rows in set (0.00 sec)

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