Can't connect to MySQL server on '207562.vh.cnolnic.com' (111)

FILE: /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Core/Db.class.php 　LINE: 162

[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Core/Db.class.php (162) DbMysql->connect(Can't connect to MySQL server on '207562.vh.cnolnic.com' (111))
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Driver/Db/DbMysql.class.php (94) Db->initConnect()
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Driver/Db/DbMysql.class.php (213) DbMysql->query()
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Core/Model.class.php (135) DbMysql->getFields(SHOW COLUMNS FROM `jyp_about`)
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Core/Model.class.php (123) Model->flush(jyp_about)
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Core/Model.class.php (1174) Model->_checkTableInfo()
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Core/Model.class.php (98) Model->db()
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Common/common.php (294) Model->__construct(0, )
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/Home/Lib/Action/GlobalAction.class.php (6) M()
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Core/Action.class.php (57) GlobalAction->_initialize(About, , )
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Common/common.php (321) Action->__construct(About)
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Core/App.class.php (103) A()
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Core/App.class.php (207) App::exec()
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Lib/Core/Think.class.php (39) App::run()
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Common/runtime.php (242) Think::start(Product)
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/ThinkPHP.php (30) require(/var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/Common/runtime.php)
[23-09-24 20:38:09] /var/www/vhosts/jyplastic.com.cn/httpdocs/index.php (10) require(/var/www/vhosts/jyplastic.com.cn/httpdocs/ThinkPHP/ThinkPHP.php)