ubuntu change mysql configuration file, it generates a log file mysql.log

1. Open the mysql configuration file , the comment lines 68, 69 cancel, save and close

　　

 

2. Restart the mysql service

　　sudo service mysql restart

 

3, the log file directory

　　/var/log/mysql/mysql.log

 

4. Check the log files in real time

　　sudo tail -f /var/log/mysql/mysql.log

　　Test: execute a query

　　

　　result

 　　

Reproduced indicate the source: https://www.cnblogs.com/jum-bolg/p/11349590.html