mysql...mysql....No mysqld pid file found

hello,

have problem
mysql fall, when I tray restart in cPanel I get:

Code:

usr/bin/mysqladmin: connect to server at 'localhost' failed error: 
'Can't connect to local MySQL server through socket 
'/var/lib/mysql/mysql.sock' (2)' Check that mysqld is 
running and that the socket: '/var/lib/mysql/mysql.sock' exists! 
mysql has failed, please contact the sysadmin (result was "mysql has failed"). 

When restart in SSH:

Code:

]# service mysql restart
No mysqld pid file found. Looked for /var/lib/mysql/my.host.com.pid.

I tray everything what I can find in this forum
Update cp, update mysql, chage permision, ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock etc... Nothink fix it.

Any one can help with this?