mysql数据库远程访问设置方法

mysql数据库远程访问设置方法

一、修改localhost
更改 "mysql" 数据库里的 "user" 表里的 "host" 项，从"localhost"改为"%"
mysql>use mysql;
mysql>update user set host = '%' where user = 'root';
mysql>select host, user from user;
mysql>FLUSH PRIVILEGES;

 

二、指定受权
使用myuser/mypassword从任何主机链接到mysql服务器:
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;

使用myuser/mypassword从ip为192.168.225.166的主机链接到mysql服务器:
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.225.166' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;

 

三、泛受权
mysql -h localhost -u root
mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION; //赋予任何主机上以root身份访问数据的权限
mysql>FLUSH PRIVILEGES;

 

解决Mysql没法远程链接的问题

一、Mysql的端口是否正确
经过netstat -ntlp查看端口占用状况，通常状况下端口是3306。在用工具链接MySQl是要用到端口。例如My Admin\My Query Browser\MySQl Front等。

二、检查用户权限是否正确
mysql库的user表里有两条记录：host分别为localhost和%(为了安全，%能够换成你须要外部链接的IP)。

三、查看/etc/mysql/my.cnf中,skip-networking 是否已被注掉
须要注掉
报错：ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.51.112' (111)

 

sudo gedit /etc/mysql/my.cnf
#skip-external-locking

#bind-address        = 127.0.0.1

skip-name-resolve

四、查看iptables是否停掉,没关的状况下,没法链接
经过：service iptables stop临时关闭。
报错：ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.51.112' (113)