我安装完My Sql为什么运行出错

zuoyan

[fukusi@SI-linux bin]$ ./mysqladmin start
./mysqladmin: connect to server at 'localhost' failed
error: 'Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)'
Check that mysqld is running and that the socket: '/tmp/mysql.sock' exists!
[fukusi@SI-linux bin]$

请高手赐教，谢谢。