Azure: unable to delete a load balancer because some associated resources belongs to another subscriptions

Hello @rmonjo,

AKS builds upon many Azure infrastructure resources, including virtual machine scale sets, virtual networks, and managed disks. These integrations enable you to apply many of the core capabilities of the Azure platform within the managed Kubernetes environment provided by AKS. For example, you can use most Azure VM types directly with AKS, and you can use Azure Reservations to receive discounts on those resources automatically.

To enable this architecture, each AKS deployment spans two resource groups:

You create the first resource group. This group contains only the Kubernetes service resource. The AKS resource provider automatically creates the second resource group during deployment. An example of the second resource group is MC_myResourceGroup_myAKSCluster_eastus.

The second resource group, known as the node resource group, contains all of the infrastructure resources associated with the cluster. These resources include the Kubernetes node VMs, virtual networking, and storage. By default, the node resource group has a name like MC_myResourceGroup_myAKSCluster_eastus. AKS automatically deletes the node resource group whenever you delete the cluster.https://learn.microsoft.com/en-us/azure/aks/faq#why-are-two-resource-groups-created-with-aks-

Check cluster pertains to a Container Apps managed environment instance: Such clusters are managed by Container Apps and should not be deleted directly by customers. If you are not using the Container Apps managed environment anymore, you can delete it with:

az containerapp env delete -n MyContainerappEnvironment -g MyResourceGroup -y

If you have any further queries, do let us know.

Hello thank you for the answer.

I'm new to this Azure Account, this is something I "inherited" so I don't really have the history of it.

The resource group I can't delete is indeed named like you described :

MC_victoriouswave-2ea4cd81-rg_victoriouswave-2ea4cd81_westeurope

So it's clearly an old AKS cluster. The issue is that the rest of it was probably destroyed and no trace of any AKS cluster in my account:

az aks list

[]

So when I try to cleanup the resource group manually I'm stuck because when trying to delete the Backend pool it says that I'm not allowed to delete the VMSS associated, because it's on an other subscription :

Failed to delete load balancer backend pool 'kubernetes'. Error: Cannot remove backend address pool kubernetes from load balancer since it is in use by virtual machine scale set /subscriptions/0e05f1d7--------------------7d44a0877777/resourceGroups/MC_victoriouswave-2ea4cd81-rg_victoriouswave-2ea4cd81_westeurope/providers/Microsoft.Compute/virtualMachineScaleSets/aks-systempool-20030299-vmss.

And 0e05f1d7--------------------7d44a0877777 is not a subscription I'm aware of ....

@Nikhil Duserla do you think an admin could get rid off this resource for me so I could go on with my clean up ?

Hello @rmonjo,

Let's continue this conversation over a call. Please share the required details as requested in my private message.