Add NIC to 'Microsoft.Network/loadBalancers/backendAddressPools'

[Karol (petitess)]

Bicep CLI version 0.6.18

I'm working with 'Microsoft.Network/loadBalancers@2022-01-01'
I'm having issues with 'Microsoft.Network/loadBalancers/backendAddressPools@2022-01-01'
When I add backend pool I am able to add ip addresses under 'Backend Pool Configuration', when i write code.
As you can see on the picture below there is an option to add 'NIC', but there is no property for this when i write code.
So I have to point to a nic of a vm manually.

If you look at the json template below, after I added a NIC. The only property is "name": "rg-vmdctest01_vmdctest01-nic-1ipconfig1"
I tried to write this in code without success. I don't think this is only bicep issue. Probably you can't do this in JSON as well. But it would be helpful if you could point to a nic of a vm.

The option 'IP address' under 'Backend Pool Configuration', works with code. But when I connect through Private Endpoint in a second vnet, it can't connect for some reason. Here you have a second issue.

You can look at my code if this is helpful.
https://github.com/petitess/bicep/tree/main/privatelink01

I hope you can do something about that.
Have a nice day.

{ "type": "Microsoft.Network/loadBalancers/backendAddressPools", "apiVersion": "2020-11-01", "name": "[concat(parameters('loadBalancers_lbi_infra_dev_01_name'), '/Pool01')]", "dependsOn": [ "[resourceId('Microsoft.Network/loadBalancers', parameters('loadBalancers_lbi_infra_dev_01_name'))]" ], "properties": { "loadBalancerBackendAddresses": [ { "name": "rg-vmdctest01_vmdctest01-nic-1ipconfig1", "properties": {} } ] } }

[Stefan Ivemo (StefanIvemo)]

To add a nic to the backend address pool you need to modify the Microsoft.Network/networkInterfaces resource and not the actual load balancer. Here's an example snippet on what this could look like.

resource internalNic 'Microsoft.Network/networkInterfaces@2021-05-01' = {
  name: internalNicName
  location: location
  properties: {
    ipConfigurations: [
      {
        name: 'ipconfig1'
        properties: {
          privateIPAddress: internalNicIP
          privateIPAllocationMethod: 'Static'
          subnet: {
            id: externalSubnetId
          }
          loadBalancerBackendAddressPools: [
            {
              id: externalLBBackendPool
            }
          ]
        }
      }
    ]
    enableIPForwarding: true
    enableAcceleratedNetworking: true
  }
}

[Karol (petitess)]

Thank you. I will test it later.