mysql -u root -p 
mysql>use mysql; 
mysql>select ‘host‘ from user where user=‘root‘; 
mysql>update user set host = ‘%‘ where user =‘root‘; 
mysql>flush privileges; 
mysql>select host,user   from user where user=‘root‘; 
 

重起mysql服務即可完成。

2. 授權法。在數據庫所在機器登入mysql後，直接進行授權

grant all privileges on . to ‘root‘@‘%‘ identified by ‘password‘ with grant option;

主機不能遠程連接mysql數據庫的解決辦法