When creating a NatGateway, how to associate it with a Subnet of an existing Vnet

[coffeejunjun]

Hello.
When creating a NatGateway in Bicep, is there a way to tie it to a Subnet of a Vnet that has already been created?
Thanks.

[aventre-bag]

Trying the same

[Alexprosp247]

Also trying to do this as well. Subnet and nat gateway are in the same deployment but for some reason it doesn't associate.

[ankurcharan]

Yes, when creating a NAT Gateway with bicep, you can associate it with an existing subnet.

var existingVNetName = 'vnet-1'
var existingSubnetName = 'subnet-1'

resource vnet 'Microsoft.Network/virtualNetworks@2023-05-01' existing = {
  name: existingVNetName
}

resource natgateway 'Microsoft.Network/natGateways@2023-06-01' = {
    // trimmed params 
}

resource updatedsubnet01 'Microsoft.Network/virtualNetworks/subnets@2023-06-01' = {
  parent: vnet
  name: existingSubnetName  // this needs to be static values, as calculated at start of deployment. so you cannot put the name of subnet as vnet.properties.subnets[0].properties.name
  properties: {
    addressPrefix: vnet.properties.subnets[0].properties.addressPrefix
    natGateway: {
      id: natgateway.id
    }
  }
}