Openshift 服务器服务暂时不可用

Question

创建了一个 MEAN 堆栈应用程序。当我的服务器.js文件中添加猫鼬并将其添加到 openshift 时，应用程序停止工作。它显示服务暂时不可用。

服务器.js代码：

var express = require('express');
var app = express();
var bodyParser = require('body-parser');
var multer = require('multer'); 
var passport      = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var cookieParser  = require('cookie-parser');
var session       = require('express-session');
var mongoose      = require('mongoose');
var db = mongoose.connect('mongodb://localhost/myproject');
var UserSchema = new mongoose.Schema({
    firstname: String,
    lastname: String,
    email: String,
    username: String,
    password: String
});
var UserModel = mongoose.model('UserModel', UserSchema);
var ip = process.env.OPENSHIFT_NODEJS_IP || '127.0.0.1';
var port= process.env.OPENSHIFT_NODEJS_PORT || 3000;
app.listen(port, ip);

package.json：

{
  "name": "MyProject",
  "version": "1.0.0",
  "description": "MyProject CS5610",
  "main": "server.js",
  "scripts": {
    "test": "echo "Error: no test specified" && exit 1"
  },
  "author": "Pankaj Tripathi",
  "license": "ISC",
  "dependencies": {
    "body-parser": "^1.12.2",
    "cookie-parser": "^1.3.4",
    "express": "^4.12.3",
    "express-session": "^1.10.4",
    "http": "0.0.0",
    "mongoose": "^3.8.25",
    "multer": "^0.1.8",
    "passport": "^0.2.1",
    "passport-local": "^1.0.0"
  }

}

RHC 尾部显示以下错误：

模数.js：340 投掷错误; ^错误：找不到模块"/var/lib/openshift/552644dffcf933d46400014d/server.js" 在Function.Module._resolveFilename（模块.js：338：15） 在Function.Module._load（模块.js：280：25） at Function.Module.runMain （module.js：497：10） 启动时（节点.js：119：16） 在节点.js：902：3[myproject-pankajt.rhcloud.com 552644dffcf933d46400014d]> lsApp-deployments app-root git mongodb nodejs[myproject-pankajt.rhcloud.com 552644dffcf933d46400014d]> 等待输入超时：自动注销与 myproject-pankajt.rhcloud.com 的连接已关闭。

Answer 1

这个语句完成了这项工作。

var connectionString = process.env.OPENSHIFT_MONGODB_DB_URL || 'mongodb://localhost/myproject';
mongoose.connect(connectionString)

Answer 2

更改

  "scripts": {
    "test": "echo "Error: no test specified" && exit 1"
  },

自

"scripts": {
    "start": "server app.js"
  },
"engines": {
"node": ">= 0.6.0",
"npm": ">= 1.0.0"
}