试图从 localhost 服务器连接 mLAB DB？身份验证失败

Posted 2023-03-07

【中文标题】试图从 localhost 服务器连接 mLAB DB？身份验证失败

【英文标题】：Trying to connect mLAB DB from localhost server? Authentication failed

【发布时间】：2018-07-10 04:50:17

【问题描述】：

下面是代码片段：

var mongoose = require('mongoose');

//mongodb://localhost/db
mongoose.connect('mongodb://username:[e-mail]:17859/db');
var db = mongoose.connection;

现在当我连接到 localhost 服务器时，它工作正常，我可以在本地 Mongo DB 上执行操作 但是当我在 MLAB 上连接到我的数据库时，我收到以下错误：

$ node app.js
Server started on port 3000
(node:8648) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): MongoError: Authentication failed.

当我打印错误对象时，我得到了这个：

err  MongoError: Authentication failed.
    at C:\Users\user\Desktop\loginapp-master\node_modules\mongoose\node_modules\mongodb-core\lib\connection\pool.js:595:61
    at authenticateStragglers (C:\Users\user\Desktop\loginapp-master\node_modules\mongoose\node_modules\mongodb-core\lib\connection\pool.js:513:16)
    at Connection.messageHandler (C:\Users\user\Desktop\loginapp-master\node_modules\mongoose\node_modules\mongodb-core\lib\connection\pool.js:549:5)
    at emitMessageHandler (C:\Users\user\Desktop\loginapp-master\node_modules\mongoose\node_modules\mongodb-core\lib\connection\connection.js:309:10)
    at Socket.<anonymous> (C:\Users\user\Desktop\loginapp-master\node_modules\mongoose\node_modules\mongodb-core\lib\connection\connection.js:452:17)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:188:7)
    at readableAddChunk (_stream_readable.js:176:18)
    at Socket.Readable.push (_stream_readable.js:134:10)
    at TCP.onread (net.js:547:20)
  name: 'MongoError',
  message: 'Authentication failed.',
  ok: 0,
  errmsg: 'Authentication failed.',
  code: 18,
  codeName: 'AuthenticationFailed' 

【问题讨论】：

您是创建了数据库用户名和密码，还是使用了您的帐户用户名和密码？您的帐户用户名和密码不应在连接字符串中使用。在此处查看更多信息：docs.mlab.com/connecting/#users

您是否创建了具有权限的用户？不是您的用户/密码帐户，而是该项目的用户。这是文档docs.mlab.com/connecting/#users

谢谢@tfogo。这就是问题所在。

【参考方案1】：

            //replace username,password and databasename
            var mongoose = require('mongoose');
            var mongodbUrl = "mongodb://username:[e-mail]:53869/databasename";
            mongoose.connect(mongodbUrl,   useNewUrlParser: true );

            mongoose.connection.on("connected", function()
                console.log("mongoose database connected with " + mongodbUrl);
            );
            mongoose.connection.on("error", function(err)
                console.log("Unable to connect with " +mongodbUrl + "error are"+ err);
            );