Home Database Mysql Tutorial Ubuntu下安装MySql并在外网连接_MySQL

Ubuntu下安装MySql并在外网连接_MySQL

Jun 01, 2016 pm 01:01 PM

纯新手教程。

1.安装mysql
apt-get install mysql-server mysql-client libmysqlclient15-dev  
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安装过程中会提示为数据库root账户设置密码,输入两边密码即可

2、进入

mysql  mysql -uroot -p 
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3、重新设置mysql用户root的密码

GRANT ALL PRIVILEGES ON *.* TO root@localhost IDENTIFIED BY "123456";
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4、创建新数据库 proxy

create database proxy;
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5、创建用户test 对proxy库有全部操作权限

grant all privileges on proxy.* to test@localhost identified by "testpwd";
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6、允许test用户可以从任意机器上登入MySQL

grant all privileges on proxy.* to test@"%" identified by "testpwd"; 
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7、退出mysql

exit 
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8、mysql安装完成后默认监听的地址是127.0.0.1,端口是3306。可以通过以下命令看到其监听的地址以及端口:

netstat -ntulp
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9、如果监听的是127.0.0.1,那么从外网是连不上数据库的。这时可以修改监听的地址为0.0.0.0:

sudo vim /etc/mysql/my.cnf
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找到bind-address=127.0.0.1这一行,将127.0.0.1改为0.0.0.0,保存退出

10、重启mysql,使配置生效

service mysql restart 
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现在应该就可以在远程用MySql_Front或者phpmyadmin远程连接mysql数据库了。只不过只能用刚授权过的test账户远程登录。root账户默认是禁止远程登录数据库的。可以用以下两种办法来允许root账户远程登录数据库:

(1). 改表法。

可能是你的帐号不允许从远程登陆,只能在localhost。这个时候只要在localhost的那台电脑,登入mysql后,更改 "mysql" 数据库里的 "user" 表里的 "host" 项,从"localhost"改称"%"

<pre name="code" class="sql">mysql -u root -p
mysql>use mysql;
mysql>update user set host = &#39;%&#39; where user = &#39;root&#39;;
mysql>select host, user from user;
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(2).授权法。

例如,你想myuser使用mypassword从任何主机连接到mysql服务器的话:

GRANT ALL PRIVILEGES ON *.* TO &#39;myuser&#39;@&#39;%&#39; IDENTIFIED BY &#39;mypassword&#39; WITH GRANT OPTION;
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如果你想允许用户myuser从ip为192.168.1.3的主机连接到mysql服务器,并使用mypassword作为密码
GRANT ALL PRIVILEGES ON *.* TO &#39;myuser&#39;@&#39;192.168.1.3&#39; IDENTIFIED BY &#39;mypassword&#39; WITH GRANT OPTION;
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如果考虑到安全性的问题,又想禁止root账户远程登录mysql数据库:

delete from user where user = &#39;root&#39; and host = &#39;%&#39;;
select host, user from user;
flush privileges;
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