我是按照这篇文章来的https://www.linuxidc.com/Linux/2016-09/135273.htm

但是看样子觉得https://www.cnblogs.com/xiaoluo501395377/archive/2013/05/14/3077880.html这篇文章也像是靠谱的样子

最后放上我的my.cnf

[mysqld]datadir=/var/lib/mysqlsocket=/var/lib/mysql/mysql.sockuser=mysqlcharacter-set-server = utf8collation-server = utf8_general_ci# skip-grant-tables# Disabling symbolic-links is recommended to prevent assorted security riskssymbolic-links=0[mysqld_safe]log-error=/var/log/mysqld.logpid-file=/var/run/mysqld/mysqld.pid[client]default-character-set = utf8