1：首先mysql本地連線報錯：
Can't connect to local MySQL server through socket '/data/mysql/mysql/mysql.sock'(111)
解決：
1：刪除 檔案：/data/mysql/mysql/mysql.sock
此時又會報錯：Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
進入到目錄：/data/mysql2/bin/
使用命令：mysqld start
此時報錯：[ERROR] Too many arguments (first extra is 'start')
於是將命令修改：mysqld --user=mysql
感謝：
https://www.cnblogs.com/invban/p/5824796.html
https://blog.csdn.net/u010416101/article/details/80490536
