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我尝试了很多，但无法在 openshift 节点盒与 mongo 盒对话的简单平均应用程序中让节点连接到 Mongo。一切正常，但如果您转到 URL ，应用程序会出错（服务暂时不可用错误） 。

我使用了正确的环境变量，如果我 ssh 到实例并在本地连接到 mongo 或在应用程序根目录运行节点服务器，一切正常。

但是，如果我 git push 它，构建、部署等工作正常，但是当我转到应用程序 URL 时，它会出错。请帮忙。不确定问题出在哪里，因为代码在本地和 repo 目录中的 openshift 服务器上运行良好，在命令行中使用“节点服务器”。

==============================
    **server.js**
    =========
    #!/bin/env node
    //  OpenShift sample Node application

    process.env.NODE_ENV = process.env.NODE_ENV || 'development';

    // Load the module dependencies
    var mongoose = require('./config/mongoose'),
        express = require('./config/express'),
        passport = require('./config/passport');



    // Create a new Mongoose connection instance
    var db = mongoose();

    // Create a new Express application instance
    var app = express();

    // Configure the Passport middleware
    var passport = passport();

    var ipaddress = process.env.OPENSHIFT_NODEJS_IP || 'localhost';
    var port      = process.env.OPENSHIFT_NODEJS_PORT || 8080;

    app.listen(port, ipaddress, function() {
                console.log('%s: Node server started on %s:%d ...',
                            Date(Date.now() ), ipaddress, port);
            });

    // Use the module.exports property to expose our Express application instance for external usage
    module.exports = app;

    ===========================

    development.js
    ==============
    // Invoke 'strict' JavaScript mode
    'use strict';


    var dbDefault = process.env.OPENSHIFT_MONGODB_DB_URL + process.env.OPENSHIFT_APP_NAME  || 'mongodb://localhost:27017/someapp'; 

    // Set the 'development' environment configuration object
    module.exports = {
        db : dbDefault ,
        sessionSecret: 'developmentSessionSecret'
    };


     ================================

    mongoose.js
    ===========

    // Invoke 'strict' JavaScript mode
    'use strict';

    // Load the module dependencies
    var config = require('./config'),
        mongoose = require('mongoose');

    // Define the Mongoose configuration method
    module.exports = function() {
        // Use Mongoose to connect to MongoDB 

        var db = mongoose.connect(config.db);


        // Load the application models 
        require('../app/core/models/user.server.model');



        // Return the Mongoose connection instance
        return db;
    };
    ===========================



    logs - node
    Error: connect ECONNREFUSED
        at errnoException (net.js:901:11)
        at Object.afterConnect [as oncomplete] (net.js:892:19)
    DEBUG: Program node server.js exited with code 8
    DEBUG: Starting child process with 'node server.js'
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