MongoDB刚刚强制更新了我的Heroku服务器，从2.6版本升级到了3.0版本。
现在我的应用程序在启动后不久就崩溃并显示以下错误：
2015-10-01T10:22:27.405579+00:00 heroku[web.1]: State changed from crashed to starting
2015-10-01T10:22:42.457971+00:00 heroku[web.1]: Starting process with command `node server`
2015-10-01T10:22:46.278159+00:00 app[web.1]: memory, and will not scale past a single process.
2015-10-01T10:22:46.278136+00:00 app[web.1]: Warning: connect.session() MemoryStore is not
2015-10-01T10:22:46.278157+00:00 app[web.1]: designed for a production environment, as it will leak
2015-10-01T10:22:47.151118+00:00 app[web.1]: production server running at http://localhost:33827
2015-10-01T10:22:47.463775+00:00 heroku[web.1]: State changed from starting to up
2015-10-01T10:22:47.767430+00:00 app[web.1]: /app/node_modules/mongodb/lib/mongodb/connection/base.js:246
2015-10-01T10:22:47.767437+00:00 app[web.1]: throw message;
2015-10-01T10:22:47.767439+00:00 app[web.1]: ^
2015-10-01T10:22:47.767441+00:00 app[web.1]: MongoError: auth failed
2015-10-01T10:22:47.767443+00:00 app[web.1]: at Object.toError (/app/node_modules/mongodb/lib/mongodb/utils.js:114:11)
2015-10-01T10:22:47.767444+00:00 app[web.1]: at /app/node_modules/mongodb/lib/mongodb/db.js:1156:31
2015-10-01T10:22:47.767445+00:00 app[web.1]: at /app/node_modules/mongodb/lib/mongodb/db.js:1890:9
2015-10-01T10:22:47.767447+00:00 app[web.1]: at Server.Base._callHandler (/app/node_modules/mongodb/lib/mongodb/connection/base.js:448:41)
2015-10-01T10:22:47.767449+00:00 app[web.1]: at /app/node_modules/mongodb/lib/mongodb/connection/server.js:481:18
2015-10-01T10:22:47.767450+00:00 app[web.1]: at MongoReply.parseBody (/app/node_modules/mongodb/lib/mongodb/responses/mongo_reply.js:68:5)
2015-10-01T10:22:47.767452+00:00 app[web.1]: at null.<anonymous> (/app/node_modules/mongodb/lib/mongodb/connection/server.js:439:20)
2015-10-01T10:22:47.767453+00:00 app[web.1]: at emit (events.js:107:17)
2015-10-01T10:22:47.767455+00:00 app[web.1]: at null.<anonymous> (/app/node_modules/mongodb/lib/mongodb/connection/connection_pool.js:201:13)
2015-10-01T10:22:47.767456+00:00 app[web.1]: at emit (events.js:110:17)
2015-10-01T10:22:47.767458+00:00 app[web.1]: at Socket.<anonymous> (/app/node_modules/mongodb/lib/mongodb/connection/connection.js:439:22)
2015-10-01T10:22:47.767459+00:00 app[web.1]: at Socket.emit (events.js:107:17)
2015-10-01T10:22:47.767461+00:00 app[web.1]: at readableAddChunk (_stream_readable.js:163:16)
2015-10-01T10:22:47.767462+00:00 app[web.1]: at Socket.Readable.push (_stream_readable.js:126:10)
2015-10-01T10:22:47.767463+00:00 app[web.1]: at TCP.onread (net.js:538:20)
2015-10-01T10:22:48.687613+00:00 heroku[web.1]: Process exited with status 1
2015-10-01T10:22:48.704259+00:00 heroku[web.1]: State changed from up to crashed
我查看了他们的状态页面，发现Mongo已经将服务器更新到3.0版本。更新应该是稳定的，所以我需要在我的端上也进行升级。经过进一步调查后，我发现我需要安装新的“驱动程序”以兼容版本3.0。我在这个链接中找到了详细信息：http://docs.mongodb.org/manual/release-notes/3.0-scram/#upgrade-drivers。但它没有描述如何在我的Heroku应用程序中更新驱动程序。我正在使用他们的沙盒服务器。我尝试联系他们的支持人员，但他们只给了我同样的链接。我还联系了Heroku的支持团队，但他们说：“您需要确保您正在使用的Mongo库支持Mongo的新版本3.0。这不一定是一个‘驱动程序’。”这对我也没有什么帮助。我的package.json内容如下。
{
"name": "Stocks",
"private": true,
"version": "0.0.1",
"main": "server.js",
"engines": {
"node": "0.12.x",
"npm": "*"
},
"author": "Anom <anom@gmail.com",
"dependencies": {
"aws-sdk": "*",
"body-parser": "^1.10.1",
"connect": "^3.3.5",
"connect-flash": "^0.1.1",
"ejs": "^2.2.1",
"express": "^4.11.0",
"express-session": "^1.10.1",
"forever": "*",
"grunt": "^0.4.5",
"grunt-cli": "^0.1.13",
"grunt-contrib-jshint": "^0.11.2",
"grunt-contrib-sass": "^0.9.2",
"grunt-contrib-uglify": "^0.8.1",
"grunt-contrib-watch": "^0.6.1",
"grunt-express-server": "^0.5.1",
"grunt-ssh": "^0.12.3",
"gulp": "latest",
"mongoose": "3.8.19",
"multer": "^0.1.8",
"node-sass": "^2.1.1",
"nodemailer": "^1.3.4",
"passport": "^0.2.1",
"passport-local": "^1.0.0",
"postmark": "^1.0.0",
"request": "^2.55.0",
"stripe": "^3.3.4"
},
"devDependencies": {},
"scripts": {
"start": "node server"
}
}
任何帮助我弄清如何更新我的Heroku应用程序上的驱动程序以与新的3.0 MongoDB兼容的建议都将不胜感激。