我在启用了APC的VPS服务器上运行magento，nginx反向代理和带有MYSQL的apache。但我一直在报告文件夹上收到此错误，有时网站因此而失败。你能指导我如何解决它。 app / etc /里面也没有搞笑的xml文件。谢谢。
a:4:{i:0;s:48:"SQLSTATE[HY000] [2002] No such file or directory";i:1;s:3103:"#0 /home/magen/public_html/shop/lib/Zend/Db/Adapter/Pdo/Mysql.php(96): Zend_Db_Adapter_Pdo_Abstract->_connect()
#1 /home/magen/public_html/shop/lib/Varien/Db/Adapter/Pdo/Mysql.php(313): Zend_Db_Adapter_Pdo_Mysql->_connect()
#2 /home/magen/public_html/shop/lib/Zend/Db/Adapter/Abstract.php(459): Varien_Db_Adapter_Pdo_Mysql->_connect()
#3 /home/magen/public_html/shop/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('SET NAMES utf8', Array)
#4 /home/magen/public_html/shop/lib/Varien/Db/Adapter/Pdo/Mysql.php(419): Zend_Db_Adapter_Pdo_Abstract->query('SET NAMES utf8', Array)
#5 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/Resource.php(169): Varien_Db_Adapter_Pdo_Mysql->query('SET NAMES utf8')
#6 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/Resource.php(110): Mage_Core_Model_Resource->_newConnection('pdo_mysql', Object(Mage_Core_Model_Config_Element))
#7 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(320): Mage_Core_Model_Resource->getConnection('core_write')
#8 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(350): Mage_Core_Model_Resource_Db_Abstract->_getConnection('write')
#9 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(335): Mage_Core_Model_Resource_Db_Abstract->_getWriteAdapter()
#10 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(360): Mage_Core_Model_Resource_Db_Abstract->_getReadAdapter()
#11 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/Resource/Db/Collection/Abstract.php(134): Mage_Core_Model_Resource_Db_Abstract->getReadConnection()
#12 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/Config.php(1348): Mage_Core_Model_Resource_Db_Collection_Abstract->__construct(Object(Mage_Core_Model_Resource_Website))
#13 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/Config.php(1380): Mage_Core_Model_Config->getModelInstance('core_resource/w...', Object(Mage_Core_Model_Resource_Website))
#14 /home/magen/public_html/shop/app/Mage.php(490): Mage_Core_Model_Config->getResourceModelInstance('core/website_co...', Object(Mage_Core_Model_Resource_Website))
#15 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/Abstract.php(208): Mage::getResourceModel('core/website_co...', Object(Mage_Core_Model_Resource_Website))
#16 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/Abstract.php(213): Mage_Core_Model_Abstract->getResourceCollection()
#17 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/App.php(608): Mage_Core_Model_Abstract->getCollection()
#18 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/App.php(466): Mage_Core_Model_App->_initStores()
#19 /home/magen/public_html/shop/app/code/core/Mage/Core/Model/App.php(349): Mage_Core_Model_App->_initCurrentStore('', 'store')
#20 /home/magen/public_html/shop/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#21 /home/magen/public_html/shop/index.php(87): Mage::run('', 'store')
#22 {main}";s:3:"url";s:6:"/shop/";s:11:"script_name";s:15:"/shop/index.php";}