symfony 3.4“驱动程序中发生异常：SQLSTATE [HY000] [2002] php_network_getaddresses：getaddrinfo failed：名称或服务未知”

Question

您好我正在尝试在AWS EC2和RDS中部署我的项目。我们使用Symfony 3.4 Framework开发了我们的应用程序，我在localhost中的代码工作正常，没有任何问题。

在AWS中托管后无效。显示此错误

 "message": "An exception occurred in driver: SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known",

邮差错误信息：

{
    "error": {
        "code": 500,
        "message": "Internal Server Error",
        "exception": [
            {
                "message": "An exception occurred in driver: SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known",
                "class": "Doctrine\\DBAL\\Exception\\ConnectionException",
                "trace": [
                    {
                        "namespace": "",
                        "short_class": "",
                        "class": "",
                        "type": "",
                        "function": "",
                        "file": "/var/www/html/ApartmentManagementScms/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php",
                        "line": 93,
                        "args": []
                    },

                ]
            },


        ]
    }
}

AWS中的Apache版本：

Server version: Apache/2.4.18 (Ubuntu)
Server built:   2018-06-07T19:43:03

OS版本：

    Distributor ID: Ubuntu
    Description:    Ubuntu 16.04.5 LTS
    Release:    16.04
    Codename:   xenial

Answer 1

仔细检查您在DSN中指定的主机地址。此错误只是表示无法解析为mysql主机指定的名称。

Answer 2

检查.env文件中的数据库配置

DATABASE_URL = MySQL的：// yourdbusername：[email protected]：3306 / yourdbname