Error establishing a database connection!

(Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2))

1. Are you sure you have typed the correct user/password?
2. Are you sure that you have typed the correct hostname?
3. Are you sure that the database server is running?

Backtrace:

1. DB->print_error( "<p><strong>Error establishing a database connection!</strong></p..." )
   File: /home/objectifsuede/ressources/evocore/_db.class.php:290
2. DB->DB( Array(10) )
   File: /home/objectifsuede/ressources/evocore/_main.inc.php:159
3. require_once( "/home/objectifsuede/ressources/evocore/_main.inc.php" )
   File: /home/objectifsuede/ressources/htsrv/login.php:54

Ignored last: 1