AKS Cost Analysis: an Azure-native cost visibility experience built on the OpenCost project

Quick fix for the problem 

But it shows the following error on trying to az aks update.

unrecognized arguments: –-enable-cost-analysis

Fix 

Install/upgrade the aks-preview extension using the command az extension add --name aks-preview /az extension update --name aks-preview. 

After this you might likely have to get another error 

Error:

(Bad Request) Preview feature Microsoft.ContainerService/ClusterCostAnalysis not registered.

Fix :

az feature register --namespace Microsoft.ContainerService --name ClusterCostAnalysis

confirm the registration 

(az feature list -o table --query "[?contains(name, 'Microsoft.ContainerService/ClusterCostAnalysis')].{Name:name,State:properties.state}")

Then rerun the enable-cost-analysis command 

az aks  update -g <resource-group-name> -n <aks-clustername>  --enable-cost-analysis