error1:mysql mysqld.sock文件丢失问题

1.亲测有效

Mysql -- connect MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
https://blog.csdn.net/ydm19891101/article/details/81665037

2.ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

（头疼，总是这个问题）