Mysql 5.6.42
Full library, by hackers brute force, set up the IP restrictions
Mysql remote connection, the connection is successful, but some simple command input, for example show the databases; Select @ @ tx_isolation; Will display the following

Then for a long time, will show

For the great god, want to ask next reason and solution

CodePudding user response:

https://www.jianshu.com/p/98c7a63b84c3