SQLSTATE[HY000] [2002]

[ricercaperb6d4]

Hi I'm a new user in Magento management. For some days these errors have appeared to me and I don't know where to start to understand what the problem may be and how to solve it. If any of you have more experience on this, I ask for help

Thank you

Version Magento 1.9.3.6, php version: 7.0.30

Error:

SQLSTATE[HY000] [2002] No such file or directory

Trace:
#0 /home/nglcchf/domains/angeluccihifi.com/public_html/lib/Zend/Db/Adapter/Pdo/Mysql.php(111): Zend_Db_Adapter_Pdo_Abstract->_connect()
#1 /home/nglcchf/domains/angeluccihifi.com/public_html/lib/Varien/Db/Adapter/Pdo/Mysql.php(396): Zend_Db_Adapter_Pdo_Mysql->_connect()
#2 /home/nglcchf/domains/angeluccihifi.com/public_html/lib/Zend/Db/Adapter/Abstract.php(460): Varien_Db_Adapter_Pdo_Mysql->_connect()
#3 /home/nglcchf/domains/angeluccihifi.com/public_html/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('SET NAMES utf8', Array)
#4 /home/nglcchf/domains/angeluccihifi.com/public_html/lib/Varien/Db/Adapter/Pdo/Mysql.php(504): Zend_Db_Adapter_Pdo_Abstract->query('SET NAMES utf8', Array)
#5 /home/nglcchf/domains/angeluccihifi.com/public_html/app/code/core/Mage/Core/Model/Resource.php(179): Varien_Db_Adapter_Pdo_Mysql->query('SET NAMES utf8')
#6 /home/nglcchf/domains/angeluccihifi.com/public_html/app/code/core/Mage/Core/Model/Resource.php(110): Mage_Core_Model_Resource->_newConnection('pdo_mysql', Object(Mage_Core_Model_Config_Element))
#7 /home/nglcchf/domains/angeluccihifi.com/public_html/app/code/core/Mage/Core/Model/Resource/Setup.php(141): Mage_Core_Model_Resource->getConnection('core_setup')
#8 /home/nglcchf/domains/angeluccihifi.com/public_html/app/code/core/Mage/Core/Model/Resource/Setup.php(234): Mage_Core_Model_Resource_Setup->__construct('core_setup')
#9 /home/nglcchf/domains/angeluccihifi.com/public_html/app/code/core/Mage/Core/Model/App.php(428): Mage_Core_Model_Resource_Setup::applyAllUpdates()
#10 /home/nglcchf/domains/angeluccihifi.com/public_html/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Model_App->_initModules()
#11 /home/nglcchf/domains/angeluccihifi.com/public_html/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#12 /home/nglcchf/domains/angeluccihifi.com/public_html/index.php(83): Mage::run('', 'store')
#13 {main}

[LitCommerce Expert]

It seems you try to connect to MySQL via a socket and that fails. Is MySQL running right and is your configuration right.
The error is coming from the file you did mention, so that isn't the problem, Magento does see that file.
Solution:
Try using an IP to connect to MySQL. Or check if your MySQL-socket is right.