Reasons why MySQL cannot be connected externally after installing MySQL database on ECs and Solutions

When using the bird cloud server to build a website , Because of the installation mysql There are some problems in the process of teaching , So I'm going to write it down , The first one is about installation mysql after , But can't be accessed from the outside , And how to solve it , In addition to searching for relevant information by yourself , You can also consult the corresponding technicians , The response soon , The problem can also be solved .
Return to the right topic .
mysql Only local connections are allowed by default , in other words , After installation mysql There will be two after root Account , their host Namely localhost and 127.0.0.1, If your website and database are on the same server , So it's accessible . But if your website and database are not on different servers , Then the website won't be able to use remote databases （ The database server denied access to ）.
1. Change table
Sign in phpmyadmin, Put the user's host Modified into %, Restart the server .
use mysql;
update user set host='%' where user='root'
flush privileges;
2. to grant authorization
Such as ： Allow account myuser Use password 1234 Connect from any host to mysql Server , Then in mySQL Type... On the command line ：
GRANT ALL PRIVILEGES ON . TO 'myuser'@'%' IDENTIFIED BY '1234' WITH GRANT OPTION;
here % To allow all IP Address access . It can be changed to specific IP, such as ：
Allow account myuser from ip by 192.168.1.3 Of hosts connected to mysql The server , And use 12345 As password , Then in mySQL Type... On the command line ：
GRANT ALL PRIVILEGES ON . TO 'myuser'@'192.168.1.3' IDENTIFIED BY '12345' WITH GRANT OPTION
Last , Make Settings work
mysql>FLUSH PRIVILEGES
Refer to this document for specific settings ：https://www.niaoyun.com/docs/...