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node.js - Authenicating a GridFS object

I'm attempting to authenticate my gridfs object that is used in mongoose/mongodb for uploading image files. I connect to my database like so:

mongoose.connect(url, {
  useNewUrlParser: true,
  useUnifiedTopology: true,
  useCreateIndex: true,
  useFindAndModify: false,
  auth: { authSource: 'admin' },
  user: username,
  pass: password,
});

const conn = mongoose.connection.on('connected', () => {
  initgfs(conn.db);
});

where my gridfs config is:

module.exports.initgfs = (url) => {
  gfs = new mongoose.mongo.GridFSBucket(url, {
    bucketName: // ...
  });
  return gfs;
}

However when I attempt to utilize GFS to perform a write operation in mongo, I get the following error:

MongoError: command insert requires authentication
    at Connection.<anonymous> (/app/node_modules/mongodb/lib/core/connection/pool.js:450:61)
    at Connection.emit (events.js:209:13)
    at processMessage (/app/node_modules/mongodb/lib/core/connection/connection.js:384:10)
    at Socket.<anonymous> (/app/node_modules/mongodb/lib/core/connection/connection.js:553:15)
    at Socket.emit (events.js:209:13)
    at addChunk (_stream_readable.js:305:12)
    at readableAddChunk (_stream_readable.js:286:11)
    at Socket.Readable.push (_stream_readable.js:220:10)
    at TCP.onStreamRead (internal/stream_base_commons.js:166:17)

when all my other writes/reads from my mongo db that do not utilize gfs are not receiving any auth errors. Any help is appreciated, thanks!

question from:https://stackoverflow.com/questions/66052022/authenicating-a-gridfs-object

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