Socket Error - Permission denied on Azure Functions

[Fillo22]

Hi everyone,
I'm trying to deploy an Azure Function (Event Hub Triggered), but after starting the pod crashes with the following error:
System.Net.Sockets.SocketException (13): Permission denied

Event Hub is connected via Private Endpoint and all ports are open.
Keda operator is the latest.
Has anyone ever had the same problem?

[TsuyoshiUshio]

Hi @Fillo22
I heard about that. Could you try wget https://.servicebus.windows.net/ from your Azure Functions pod?
This page might be useful. https://docs.microsoft.com/en-us/azure/event-hubs/troubleshooting-guide#troubleshoot-network-related-issues

[Fillo22]

Hi @TsuyoshiUshio, finally i found a solution.

Even if an http trigger is not used, the dotnet core runtime tries to expose a reserved port (1 - 1024), however it does not have the permissions to do this, so it fails. To work around the problem I added an environment variable ENV ASPNETCORE_URLS=http://*:8080 ed I exposed a non-root port.

[TsuyoshiUshio]

Great finding. Thank you for sharing.