Mysql8.0 method and steps for enabling remote connection permission

Catalog

Problem description ：

Error reason ：

resolvent ：

summary

Problem description ：

development environment ：MySQL8+Centos8;

perform MySQL sentence ：mysql -h 180.76.XXX.XX -u root -pPassword;

Error reason ：

ERROR 1130 (HY000): Host ‘180.76.XXX.XX’ is not allowed to connect to this MySQL server

resolvent ：

First , Check whether the firewall of the server to connect to the database is closed , Check whether the connection with the server is smooth （ Method ： stay cmd Console Input ping ip Address ）

Next , Get to the point ：

The specific operation steps are as follows ：

Log in locally MySQL library , Switch to database= “mysql” Next , change “mysql” In the database “user” Exterior and interior “host” term , from "localhost" rename "%" ：

Executive mysql The order is as follows ：

【1】mysql Command to connect to the local server for which you want to open remote connection permission mysql library >mysql -u root -pPassWord # ”root“ For login account ,”Password“ Is the login password , Modify according to your own settings >use mysql; # The use of database The name is ”mysql“>update user set host = '%' where user = 'root'; # modify ”root“ Account configuration information # update user set host='%' where user='test'; ## If the account number is “test”, Use this command >select host, user from user; # Verification and modification succeeded ;

stay mysql The specific execution result of the command line is shown in the figure below ：

2. here “ If you connect to a remote MySQL, Still not connected ” when , Then continue the operation GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'WITH GRANT OPTION; Account authorization , After performing FLUSH PRIVILEGES; refresh , that will do ." ：

>mysql -u root -pPassWord # ”root“ For login account ,”Password“ Is the login password , Modify according to your own settings # Connect MySQL database >GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'WITH GRANT OPTION; # to grant authorization # Grant all privileges on test.* to 'test'@'%'; # If the account number is “test” when , Use this command >FLUSH PRIVILEGES; # Refresh >EXIT; # sign out MySQL

stay mysql The specific execution result of the command line is shown in the figure below ：

remarks ： Be sure to end here with a semicolon ！！！

At this time, there is no above ERROR 1133 Wrong. , After testing , You can already connect to the remote server .

The general implementation steps are as follows ：

reference ：

Yes MySQL Methods of opening remote connection permissions

solve mysql8 Report errors ：ERROR 1410 (42000): You are not allowed to create a user with GRANT

summary

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