Heroku app crashes after MongoDB updated to 3.0

Question

MongoDB just forced an update on my Heroku server today from 2.6 to 3.0

Now my app crashes shortly after startup with the error:

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

I checked their status page, and found that Mongo had updated their servers to version 3.0, but also that the update should be stable now, and thus is something I need to do on my end.

After looking a bit more into it. I figured out that I'm supposed to install new "drivers" to be compatible with version 3.0.

I found this link http://docs.mongodb.org/manual/release-notes/3.0-scram/#upgrade-drivers

But it doesn't describe how exactly I can go about updating the drivers on my Heroku app.

I'm using their sandbox servers.

I tried contacting their support but they just gave me the same link.

I contacted Heroku support as well. But all they said is:

You need to make sure that the libraries you are using for Mongo support the new version 3.0 of Mongo. It's not necessarily a 'driver' as such

Which doesn't help me either.

Here's the contents of my package.json if that helps.

{
  "name": "Stocks",
  "private": true,
  "version": "0.0.1",
  "main": "server.js",
  "engines": {
    "node": "0.12.x",
    "npm": "*"
  },
  "author": "Anom <[e-mail]",
  "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"
  }
}

Any help to figure out how I can update drivers on my Heroku app to be compatible with the new 3.0 MongoDB would be greatly appreciated.

Answer 1

I had the exact same problem I did all of the above and nothing worked. Only until I deleted mongoose out of my package.json and reinstalled it thats when it worked

Answer 2

You're using mongoose 3.8.19. The latest version of mongoose is 4.1.9. I would start there:

$ npm install --save --save-exact mongoose@4.1.9