MySQL允许来自多个IP地址的远程连接

Question

I am aware of the command

GRANT ALL PRIVILEGES ON *.* TO 'USERNAME'@'1.2.3.4' IDENTIFIED BY 'PASSWORD' WITH GRANT OPTION;

That will allow remote connections from the ip 1.2.3.4 , but what if I wanted to allow connections from both 1.2.3.4 and 5.6.7.8 ?

Would it look like this?

GRANT ALL PRIVILEGES ON *.* TO 'USERNAME'@'1.2.3.4, 5.6.7.8' IDENTIFIED BY 'PASSWORD' WITH GRANT OPTION;

Or is this not allowed?

Answer 1

You can run above command many times to GRANT access from multiple IPs.

mysql> GRANT ALL PRIVILEGES ON *.* TO 'USERNAME'@'1.2.3.4' IDENTIFIED BY 'PASSWORD' WITH GRANT OPTION;
mysql> GRANT ALL PRIVILEGES ON *.* TO 'USERNAME'@'5.6.7.8' IDENTIFIED BY 'PASSWORD' WITH GRANT OPTION;

to all ips

mysql> GRANT ALL PRIVILEGES ON *.* TO 'USERNAME'@'%' IDENTIFIED BY 'PASSWORD' WITH GRANT OPTION;

Answer 2

With MySQL wildcards. instead of using limited numbers you can implement a wildcard. this can be done by adding '%' instead of the numbers.