[日常] 解決mysql不允許外部訪問

1.在端口已經開放的情況下,ubuntu mysql 3306允許遠程訪問
vim /etc/mysql/mysql.conf.d/mysqld.cnf
注釋#bind-address = 127.0.0.1

 

2.給用戶授權允許遠程訪問:
grant all privileges on *.* to root@"%" identified by "pwd" with grant option;
flush privileges;

 

 

創建和授權用戶某些權限的測試,在mysql數據庫的user表里進行的操作

1.mysql創建用戶:
CREATE USER 'taoshihan'@'localhost' IDENTIFIED BY '';
localhost是只是本地
%是允許遠程
CREATE USER 'taoshihan115'@'%' IDENTIFIED BY 'TAOshihan1';

刪除用戶:
drop user 'taoshihan'@'localhost'

2.授權:
GRANT select ON *.* TO 'taoshihan115'@'%';授權指定
GRANT all ON *.* TO 'taoshihan115'@'%';授權所有

 

當mysql重啟不了的時候,看看日志目錄比如/var/log/mysql 是否存在,屬組和屬主是否是mysql

如果沒有,創建目錄,並更改目錄的所有者 chown mysql:mysql