mysql數據庫遠程訪問設置方法

mysql數據庫遠程訪問設置方法

一、修改localhost
更改 "mysql" 數據庫裏的 "user" 表裏的 "host" 項，從"localhost"改爲"%"
mysql>use mysql;
mysql>update user set host = '%' where user = 'root';
mysql>select host, user from user;
mysql>FLUSH PRIVILEGES;

 

二、指定受權
使用myuser/mypassword從任何主機鏈接到mysql服務器:
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;

使用myuser/mypassword從ip爲192.168.225.166的主機鏈接到mysql服務器:
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.225.166' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;

 

三、泛受權
mysql -h localhost -u root
mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION; //賦予任何主機上以root身份訪問數據的權限
mysql>FLUSH PRIVILEGES;

 

解決Mysql沒法遠程鏈接的問題

一、Mysql的端口是否正確
經過netstat -ntlp查看端口占用狀況，通常狀況下端口是3306。在用工具鏈接MySQl是要用到端口。例如My Admin\My Query Browser\MySQl Front等。

二、檢查用戶權限是否正確
mysql庫的user表裏有兩條記錄：host分別爲localhost和%(爲了安全，%能夠換成你須要外部鏈接的IP)。

三、查看/etc/mysql/my.cnf中,skip-networking 是否已被注掉
須要注掉
報錯：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,沒關的狀況下,沒法鏈接
經過：service iptables stop臨時關閉。
報錯：ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.51.112' (113)