Can't connect to local MySQL server through socket '/tmp/mysql.sock' (111)

FILE: /home/wwwroot/default/eng/ThinkPHP/Lib/Core/Db.class.php 　LINE: 164

[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Lib/Core/Db.class.php (164) DbMysql->connect(Can't connect to local MySQL server through socket '/tmp/mysql.sock' (111))
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Lib/Driver/Db/DbMysql.class.php (95) Db->initConnect()
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Lib/Driver/Db/DbMysql.class.php (215) DbMysql->query()
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Lib/Core/Model.class.php (134) DbMysql->getFields(SHOW COLUMNS FROM `engqf_type`)
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Lib/Core/Model.class.php (122) Model->flush(engqf_type)
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Lib/Core/Model.class.php (1185) Model->_checkTableInfo()
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Lib/Core/Model.class.php (97) Model->db()
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Common/common.php (296) Model->__construct(0, )
[25-06-28 06:15:06] /home/wwwroot/default/eng/App/Lib/Action/Home/PublicAction.class.php (7) M()
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Common/common.php (323) PublicAction->__construct(type, , )
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Lib/Core/App.class.php (102) A()
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Lib/Core/App.class.php (207) App::exec(type)
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Lib/Core/Think.class.php (39) App::run()
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/Common/runtime.php (242) Think::start(Home/News)
[25-06-28 06:15:06] /home/wwwroot/default/eng/ThinkPHP/ThinkPHP.php (30) require(/home/wwwroot/default/eng/ThinkPHP/Common/runtime.php)
[25-06-28 06:15:06] /home/wwwroot/default/eng/index.php (21) require(/home/wwwroot/default/eng/ThinkPHP/ThinkPHP.php)