mysql新增遠端使用者訪問
阿新 • • 發佈:2019-02-15
今天需要在本地測試系統功能,因為本地沒有資料庫,就需要在程式裡面連線遠端資料庫;
先用ssh登入遠端伺服器,用root連上資料庫看看情況;
mysql> select Host,User,Password from mysql.user; +----------------+------------------+-------------------------------------------+ | Host | User | Password | +----------------+------------------+-------------------------------------------+| localhost | root | *836E233974EBE6EA32F95F890A91363F8427F78B | | iz94926clkiz | root | *836E233974EBE6EA32F95F890A91363F8427F78B | | 127.0.0.1 | root | *836E233974EBE6EA32F95F890A91363F8427F78B | | ::1 | root | *836E233974EBE6EA32F95F890A91363F8427F78B || localhost | debian-sys-maint | *1460ED3535ABDBB887F9E5F57F40A2354610CDF3 | +----------------+------------------+-------------------------------------------+ 5 rows in set (0.00 sec)
一共有5個mysql賬號,Host列可以看出來,這些賬號都只支援伺服器本機連線,現在我們來建立一個遠端使用者;
create user test identified by '123456';
+----------------+------------------+-------------------------------------------+| Host | User | Password | +----------------+------------------+-------------------------------------------+ | localhost | root | *836E283974EBE6EA32F95F890A91363F8427F78B | | iz949s6clkiz | root | *836E283974EBE6EA32F95F890A91363F8427F78B | | 127.0.0.1 | root | *836E283974EBE6EA32F95F890A91363F8427F78B | | ::1 | root | *836E283974EBE6EA32F95F890A91363F8427F78B | | localhost | debian-sys-maint | *1460ED35E5ABDBB887F9E5F57F40A2354610CDF3 | | % | test | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 | +----------------+------------------+-------------------------------------------+ 6 rows in set (0.00 sec)
建立完成了,在程式裡面連線發現還是沒有許可權,剛才我們只是建立了使用者,還沒有對這個使用者分配許可權;
grant all privileges on *.* to 'test'@'%'identified by '123456' with grant option;
all代表接受所有操作,比如 select,insert,delete....; *.* 代表所有庫下面的所有表;% 代表這個使用者允許從任何地方登入;為了安全期間,這個%可以替換為你允許的ip地址;
然後重新整理mysql使用者許可權相關表;
flush privileges ;
我以為就此收工了,等等,程式怎麼還是連不上去,還是 access deny ;
難道埠不是3306嗎,開啟 mysql配置檔案,是預設的3306,接著往下面看,發現一個關鍵地方;
bind-address = 127.0.0.1
原來這裡mysql預設綁定了本地ip,不接受其他來源;註釋掉,重啟mysql 一切OK;
還有兩個常用操作;
修改指定使用者密碼
update mysql.user set password=password('新密碼') where User="test" and Host="localhost";
刪除使用者
delete from user where User='test' and Host='localhost';