unable to connect to cosmos mongo dB

Damilola Adejobi 0

When we try to connect to the cosmos mongo DB “monitoring-cosmos-ensight” form inside the function utilizing the system managed identity we get:
[Error]   Error when reading device shellypro3em-c8f09e87a5a4 : A timeout occurred after 30000ms selecting a server using CompositeServerSelector{ Selectors = MongoDB.Driver.MongoClient+AreSessionsSupportedServerSelector, LatencyLimitingServerSelector{ AllowedLatencyRange = 00:00:00.0150000 }, OperationsCountServerSelector }. Client view of cluster state is { ClusterId : '1', ConnectionMode : 'ReplicaSet', Type : 'ReplicaSet', State : 'Disconnected', Servers : [{ ServerId: '{ ClusterId : 1, EndPoint : 'Unspecified/monitoring-cosmos-ensight.mongo.cosmos.azure.com:10255' }', EndPoint: 'Unspecified/monitoring-cosmos-ensight.mongo.cosmos.azure.com:10255', ReasonChanged: 'Heartbeat', State: 'Disconnected', ServerVersion: , TopologyVersion: , Type: 'Unknown', HeartbeatException: 'MongoDB.Driver.MongoConnectionException: An exception occurred while opening a connection to the server.
 --- MongoDB.Driver.MongoConnectionException: An exception occurred while receiving a message from the server.
 --- System.IO.EndOfStreamException: Attempted to read past the end of the stream.
   at MongoDB.Driver.Core.Misc.StreamExtensionMethods.ReadBytes(Stream stream, Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Connections.BinaryConnection.ReceiveBuffer(CancellationToken cancellationToken)

Saurabh Sharma 23,811 Reputation points Microsoft Employee

2023-07-27T14:57:41.44+00:00

Hi Damilola Adejobi,

Thanks for using Microsoft Q&A !!

Can you provide function app code snippet which are using to connect to a cosmos mongodb ?

Thanks

Saurabh
Saurabh Sharma 23,811 Reputation points Microsoft Employee

2023-08-03T18:49:51.9633333+00:00

Hi Damilola Adejobi,

We haven't heard back from you. Just wanted to check if you are you still facing the issue? In case If you already found a solution, would you please share it here with the community? Otherwise, let us know and we will continue to engage with you on the issue.

Thanks

Saurabh

Damilola Adejobi 0

Hello @saurabh sharma apology fro the late response, here is the function code:

{
  "generatedBy": "Microsoft.NET.Sdk.Functions.Generator-4.1.1",
  "configurationSource": "attributes",
  "bindings": [
    {
      "type": "timerTrigger",
      "runOnStartup": true,
      "schedule": "0 * * * *",
      "useMonitor": true,
      "name": "myTimer"
    }
  ],
  "disabled": false,
  "scriptFile": "../bin/Reducer.dll",
  "entryPoint": "FunctionApp1.Function1.Run"
}

Function App: MeterDeviceDataReduce

Looking forward to your response

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