连接mysql报ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

在自己搭建的虚拟机上运行曾经安装的mysql,报如下信息：

[root@localhost mysql]# mysql -uroot -p
Enter password: 
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

查找该文件也是没有找到

[root@localhost mysql]# find / -name mysql.sock

编辑/etc/my.cnf文件

重启服务：

[root@localhost tmp]# service mysql restart
 ERROR! MySQL server PID file could not be found!
Starting MySQL...... SUCCESS! 

报了一个PID找不到，又说启动成功，有点懵，连接下

[root@localhost tmp]# mysql -uroot -p
Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

先停止服务

[root@localhost tmp]# service mysql stop
Shutting down MySQL.. SUCCESS! 

使用safe模式

[root@localhost tmp]# /usr/local/mysql/bin/mysqld_s