Hi yatta,
Once you enabled the managed identity on your AKS cluster, then you have to upgrade the node-image for your node pool, use this command to upgrade all node pools:
az aks upgrade --resource-group myResourceGroup --name myAKSCluster --node-image-only
Or this command to upgrade a specific node pool:
az aks nodepool upgrade --resource-group myResourceGroup --cluster-name myAKSCluster --name mynodepool --node-image-only
After that you can verify your AKS cluster if it is managed identity enabled using the following command:
az aks show --resource-group myResourceGroup --name myAKSCluster -o json --query servicePrincipalProfile
And this command will show the managed identity resource ID:
az aks show --resource-group myResourceGroup --name myAKSCluster -o json --query identityProfile
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