MySQL Character Set Problems

Recently, a small project needs to modify the MySQL character set. Therefore, according to the online tutorial, it is found that MySQL cannot be started.

Then the internet says "/etc/my. it seems that MySQL is installed with rpm in the project, and there is no my In etc. cnf, so I wrote a my. cnf is placed in the etc folder and cannot be started. My. cnf is deleted and MySQL service is started successfully.

So it should be my. for cnf settings, open/var/lib/mysql/localhost. localdomain. error found in the err file,/usr/bin/mysqld: unknown variable 'default-character-set = utf8' comment my. this statement in cnf is successfully started and found on the Internet,