求助 fc下mysql

vividness

mysql-connector-odbc-3.51.12-2.2
mysql-server-5.0.22-2.1
mysql-5.0.22-2.1
libdbi-dbd-mysql-0.8.1a-1.2.2

[root@localhost Desktop]# cd ..
[root@localhost vividness]# mysql -u root -p
Enter password:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
不知道原因   mysql是系统集成的