I have created an instance of Azure Kubernetes Service (AKS) and have discovered that apart from the resource group I created the AKS instance in, one more resource group is created for me.
Eg:
My AKS Resource Group: Production_MyAKSInstance Additional Resource Group: MC_MyResourceGroup-Production_MyAKSInstance_westeurope
Is there a way to rename the Additional Resource Group something like Production_MyAKSInstance_Supportive?
You can't rename it however you can specify a name when you create the cluster.
https://docs.microsoft.com/en-us/azure/aks/faq
By default, AKS will name the node resource group MC_resourcegroupname_clustername_location, but you can also provide your own name.
To specify your own resource group name, install the aks-preview Azure CLI extension version 0.3.2 or later. When you create an AKS cluster by using the az aks create command, use the --node-resource-group parameter and specify a name for the resource group. If you use an Azure Resource Manager template to deploy an AKS cluster, you can define the resource group name by using the nodeResourceGroup property.
The secondary resource group is automatically created by the Azure resource provider in your own subscription. You can specify a custom resource group name only when you're creating the cluster. As you work with the node resource group, keep in mind that you cannot:
Specify an existing resource group for the node resource group. Specify a different subscription for the node resource group. Change the node resource group name after the cluster has been created. Specify names for the managed resources within the node resource group. Modify or delete Azure-created tags of managed resources within the node resource group.