Piwik # open source web analytics

SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

Backtrace:
#0 /var/www/vhosts/yocozu.com/httpdocs/piwik/libs/Zend/Db/Adapter/Abstract.php(228): Zend_Db_Adapter_Pdo_Abstract->_connect()
#1 /var/www/vhosts/yocozu.com/httpdocs/piwik/core/Piwik.php(915): Zend_Db_Adapter_Abstract->getConnection()
#2 /var/www/vhosts/yocozu.com/httpdocs/piwik/core/FrontController.php(231): Piwik::createDatabaseObject()
#3 /var/www/vhosts/yocozu.com/httpdocs/piwik/index.php(51): Piwik_FrontController->init()
#4 {main}