ATLAS Serverless and DNS txt record

Valerio_Merani · 2021-08-04T03:44:02.621Z

I have created a serverless database which i should get connected with the proposed connection string:

mongodb+srv://<username>:<password>@xyz.esxbh.mongodb.net/xyz?retryWrites=true&w=majority

Now, when i try to write on the database, i get the following error (from a lambda function):

MongoParseError: Text record must only set `authSource` or `replicaSet`

The mongodb source code seems to be looking for either authSource or ReplicaSet TXT dns records, whilst the connection string DNS returns:

"TXT    "authSource=admin&loadBalanced=true"

So my questions are:

is serverless meant to work in a different way i.e. not via mongodb/mongoose
how can i connect to the DB despite the loadBalanced=true string?

Thanks

Valerio

Karl_Livesey · 2021-08-07T12:16:08.206Z

I would also like to know this.

Ramachandra_Tummala · 2021-08-07T13:44:44.560Z

Valerio_Merani:

"TXT "authSource=admin&loadBalanced=true"

Check this link.It may help

stackoverflow.com

atlas mongodb serverless and aws lambda connection issue

mongodb, amazon-web-services, aws-lambda

asked by LordVee on 09:03AM - 01 Aug 21 UTC

Valerio_Merani · 2021-08-07T13:58:16.781Z

This is me posting the question on SO

Valerio_Merani · 2021-08-07T14:01:17.415Z

I’ve opened the topic mentioned below on SO (amazon web services - atlas mongodb serverless and aws lambda connection issue - Stack Overflow), however i have not received any input. I am 99% sure that the issue lies with serverless databases, not with my code; I switched over to a regular M0 instance, and the code just works.

Maybe the serverless DB is only meant to be used via REST?

Ramachandra_Tummala · 2021-08-07T14:06:53.148Z

ok

So you tried without loadbalanced?

Valerio_Merani · 2021-08-07T14:15:01.998Z

hi, problem is: i don’t control the DNS, this is part of the service

Opal_Davis · 2021-08-09T23:29:50.297Z

I’m still stuck on this was well… but sadly I feel that there is no support of normal apps like mongoose as this time.
When using MongoDB Atlas’ Connect Wizard it mentions the the native MongoDB node.js driver 3.7+ doesn’t have the capability to handle serverless yet:
**This driver version is not supported for MongoDB Serverless.** Support for Serverless on this driver is coming soon.

Christopher_Shum · 2021-08-10T04:58:51.293Z

Hi @Valerio_Merani ,

The issue that you were facing was likely due to the Node.js driver not supporting serverless instances yet (namely the lack of support for the loadBalanced configuration as pointed out by other community members).

We have just released version 4.1.0 of our Node.js driver, which supports serverless instances. You should now be able to upgrade your driver version to 4.1.0 and connect to your serverless instance!

You may separately have to wait for Mongoose to update their library in order to use Mongoose with serverless instances.

Hope this helps!
– Chris

system · 2021-08-15T04:59:07.572Z

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