Node.js SSH Tunneling to MongoDB using Mongoose

Question

I have two Mongo DBs. One for my dev environment, one for production as seen here from my Robomongo setup:

The production db is SSH tunneled to my Digital O

Answer 1

dstHost needs to be a hostname/IP, not a MongoDB connection string. In this particular case, you can actually omit dstHost, localHost, and localPort in this particular case because they already default to the values you're providing.

Answer 2

The final working config for future reference. Thanks to mscdex -- I simply needed to provide the correct dstPort and include it in my Mongo URI string (the 27017). So simple. Hope this helps.

var config = {
    username:'myusername',
    host:'my.ip.address',
    agent : process.env.SSH_AUTH_SOCK,
    privateKey:require('fs').readFileSync('/Users/myusername/.ssh/id_rsa'),
    port:22,
    dstPort:27017,
    password:'mypassword'
};

var server = tunnel(config, function (error, server) {
    if(error){
        console.log("SSH connection error: " + error);
    }
    mongoose.connect('mongodb://localhost:27017/mydbname');

    var db = mongoose.connection;
    db.on('error', console.error.bind(console, 'DB connection error:'));
    db.once('open', function() {
        // we're connected!
        console.log("DB connection successful");
    });
});

Answer 3

Or if you don't want to change your code, provided that you have your ssh public key on the tunnel server, you can create a tunnel via ssh on the terminal:

ssh -fNL <local_port>:<mongodb_server_hostname_or_ip>:<mongodb_server_port> <tunnel_server_user>@<tunnel_server_hostname_or_ip>

Example with made-up IPs connecting to a fake AWS EC2 AMI Linux

ssh -fNL 27000:101.202.10.20:27000 ec2-user@33.44.55.66

Now this mongoose.connect('mongodb://localhost:27000/mydbname'); works like a charm. ;)