无法连接数据库:php_network_getaddresses: getaddrinfo failed: Name or service not known

>  /app/base/lib/db/connections.php:184
#0trigger_error(...string(93) "无法连接数据库:php_network_getaddresses: getaddrinfo failed: Name or service not known" ,'256')connections.php:184
#1base_db_connections->_connect(...string(44) "rm-uf676d7wg794869r9o.mysql.rds.aliyuncs.com" ,'ecstore2','Ecstore123!@#','ecstore2')connections.php:173
#2base_db_connections->_rw_conn()connections.php:158
#3base_db_connections->_ro_conn()connections.php:98
#4base_db_connections->select(...string(74) "SELECT * FROM `sdb_ectools_currency` WHERE `cur_default`='true' LIMIT 0, 1" )connections.php:147
#5base_db_connections->selectlimit(...string(63) "SELECT * FROM `sdb_ectools_currency` WHERE `cur_default`='true'" ,'1','0')connections.php:137
#6base_db_connections->selectrow(...string(63) "SELECT * FROM `sdb_ectools_currency` WHERE `cur_default`='true'" )currency.php:153
#7ectools_mdl_currency->getDefault()currency.php:192
#8ectools_mdl_currency->getFormat()product.php:22
#9b2c_ctl_site_product->__construct(object(appobject(app)#10 (23) { ["__render":"app":private]=> NULL ["__router":"app":private]=> NULL ["__define":"app":private]=> NULL ["__taskrunner":"app":private]=> NULL ["__checkVaryArr":"app":private]=> array(0) { } ["__langPack":"app":private]=> array(0) { } ["__installed":"app":private]=> NULL ["__actived":"app":private]=> NULL ["__setting":"app":private]=> NULL ["app_id"]=> string(3) "b2c" ["app_dir"]=> string(26) "/data/www/ecstore2/app/b2c" ["public_app_dir"]=> string(33) "/data/www/ecstore2/public/app/b2c" ["res_url"]=> string(46) "http://popartbeauty.com/public/app/b2c/statics" ["favicon"]=> string(47) "http://popartbeauty.com/public/app/site/statics" ["res_full_url"]=> string(46) "http://popartbeauty.com/public/app/b2c/statics" ["lang_url"]=> string(43) "http://popartbeauty.com/public/app/b2c/lang" ["lang_full_url"]=> string(43) "http://popartbeauty.com/public/app/b2c/lang" ["widgets_url"]=> string(46) "http://popartbeauty.com/public/app/b2c/widgets" ["widgets_full_url"]=> string(46) "http://popartbeauty.com/public/app/b2c/widgets" ["res_dir"]=> string(41) "/data/www/ecstore2/public/app/b2c/statics" ["widgets_dir"]=> string(41) "/data/www/ecstore2/public/app/b2c/widgets" ["lang_dir"]=> string(38) "/data/www/ecstore2/public/app/b2c/lang" ["_lang_resource"]=> NULL } ))kernel.php:460
#10kernel::single('b2c_ctl_site_product',object(appobject(app)#10 (23) { ["__render":"app":private]=> NULL ["__router":"app":private]=> NULL ["__define":"app":private]=> NULL ["__taskrunner":"app":private]=> NULL ["__checkVaryArr":"app":private]=> array(0) { } ["__langPack":"app":private]=> array(0) { } ["__installed":"app":private]=> NULL ["__actived":"app":private]=> NULL ["__setting":"app":private]=> NULL ["app_id"]=> string(3) "b2c" ["app_dir"]=> string(26) "/data/www/ecstore2/app/b2c" ["public_app_dir"]=> string(33) "/data/www/ecstore2/public/app/b2c" ["res_url"]=> string(46) "http://popartbeauty.com/public/app/b2c/statics" ["favicon"]=> string(47) "http://popartbeauty.com/public/app/site/statics" ["res_full_url"]=> string(46) "http://popartbeauty.com/public/app/b2c/statics" ["lang_url"]=> string(43) "http://popartbeauty.com/public/app/b2c/lang" ["lang_full_url"]=> string(43) "http://popartbeauty.com/public/app/b2c/lang" ["widgets_url"]=> string(46) "http://popartbeauty.com/public/app/b2c/widgets" ["widgets_full_url"]=> string(46) "http://popartbeauty.com/public/app/b2c/widgets" ["res_dir"]=> string(41) "/data/www/ecstore2/public/app/b2c/statics" ["widgets_dir"]=> string(41) "/data/www/ecstore2/public/app/b2c/widgets" ["lang_dir"]=> string(38) "/data/www/ecstore2/public/app/b2c/lang" ["_lang_resource"]=> NULL } ))app.php:76
#11app->controller('site_product')router.php:602
#12site_router->default_dispatch()router.php:492
#13site_router->dispatch('product-501')kernel.php:278
#14kernel::boot()index.php:5