Azure SDK Error 404 when listing network interfaces of scale set

Question

Hi,

I'm using Azure Management SDK to manage my scale sets. When I try to list all the network interfaces of an Azure VM in a scale set, I get a 404 error even though the scale set exists.

This code works:

for (VirtualMachineScaleSetVM instance : scaleSet.virtualMachines().list())

But this one returns 404 error:

PagedIterable<VirtualMachineScaleSetNetworkInterface> networkInterfaces = instance.listNetworkInterfaces();

I hope you can help me solve this issue.

Barak.

Answer 1

Hello Barak Pahima Welcome to Microsoft Q&A. Thank you for posting your query here!

The error message you are seeing is related to the fact that there is no outbound internet connection for the Virtual Machine Scale Set. The error message is not related to the code you are using to list the network interfaces of the Azure VM in the scale set.

To resolve the error, you need to enable secure outbound access for your Virtual Machine Scale Set by using a method that's best suited for your application. Outbound access can be enabled by using one of the following methods:

• Use a Network Address Translation (NAT) Gateway on your subnet.
• Add scale set instances to a Load Balancer backend pool.
• Add an explicit public IP address per scale set instance.

For more information, please see the following document: https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machine-scale-sets/vmss-outbound-connectivity-not-enabled

Please let us know if you have any further queries. I’m happy to assist you further.

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-Ekta