gistfile1.js

// Connect to a Mongo replica set using SSL through Mongoose and the power of love
var db = {
      dsn: 'mongodb://db1:27017/DB_NAME,mongodb://db2:27017/DB_NAME,mongodb:db3:27017/DB_NAME',
      options: {
        replset: {
          rs_name: 'rs0',
          ssl: true,
          sslCert: fs.readFileSync("/path/to/file.crt"),
          sslKey: fs.readFileSync("/path/to/file.key"),
        },
        auth: { authdb: "AUTH_DB_NAME" },
        user: "username",
        pass: "********",
      },
    };

mongoose.connect(db.dsn, db.options);