报错详细
Fatal error: Uncaught PDOException: PDO::__construct(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /www/web/demo/fecbo/vendor/yiisoft/yii2/db/Connection.php:705 Stack trace: #0 /www/web/demo/fecbo/vendor/yiisoft/yii2/db/Connection.php(705): PDO->__construct('mysql:host={mys...', '{mysql_user}', '{mysql_password...', NULL) #1 /www/web/demo/fecbo/vendor/yiisoft/yii2/db/Connection.php(626): yii\db\Connection->createPdoInstance() #2 /www/web/demo/fecbo/vendor/yiisoft/yii2/db/Connection.php(1025): yii\db\Connection->open() #3 /www/web/demo/fecbo/vendor/yiisoft/yii2/db/Connection.php(1012): yii\db\Connection->getMasterPdo() #4 /www/web/demo/fecbo/vendor/yiisoft/yii2/db/Command.php(255): yii\db\Connection->getSlavePdo() #5 /www/web/demo/fecbo/vendor/yiisoft/yii2/db/Command.php(1154): yii\db\Command->prepare(true) #6 /www/web/demo/fecbo/vendor/yiisoft/yii2/db/Command.php(401): yii\db\Command->queryInternal('fetchAll', NULL) #7 /www/web/demo/fecbo/common/config/bootstrap.php(35): yii\db\Command->que in /www/web/demo/fecbo/vendor/yiisoft/yii2/db/Connection.php on line 637