Problem with Azure in Microsoft learning path module (Kubernetes)

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I am just doing this module of Microsoft course:

https://docs.microsoft.com/en-us/learn/modules/microservices-aspnet-core/

I created an azure subscription and tried to run the script given in unit 2. Something is going on in the console, but at some point it shows something like this:

Getting credentials for AKS...
(ResourceNotFound) The Resource 'Microsoft.ContainerService/managedClusters/eshop-learn-aks' under resource group 'eshop-learn-rg' was not found. For more details please go to https://aka.ms/ARMResourceNotFoundFix
Code: ResourceNotFound
Message: The Resource 'Microsoft.ContainerService/managedClusters/eshop-learn-aks' under resource group 'eshop-learn-rg' was not found. For more details please go to https://aka.ms/ARMResourceNotFoundFix

Installing NGINX ingress controller
error: You must be logged in to the server (the server has asked for the client to provide credentials)
error: You must be logged in to the server (the server has asked for the client to provide credentials)
error: You must be logged in to the server (the server has asked for the client to provide credentials)

Getting load balancer public IP

 > kubectl get svc -n ingress-nginx -o json | jq -r -e '.items[0].status.loadBalancer.ingress[0].ip // empty'

error: You must be logged in to the server (the server has asked for the client to provide credentials)
Waiting for load balancer IP...

Am I doing something wrong? Strictly followed instructions.

Edit: I think problem is with VM, not AKS.

> az aks create -n eshop-learn-aks -g eshop-learn-rg --node-count 1 --node-vm-size Standard_D2_v5 --vm-set-type VirtualMachineScaleSets -l centralus --enable-managed-identity --generate-ssh-keys -o json

ERROR: (BadRequest) The VM size of AgentPoolProfile:nodepool1 is not allowed in your subscription in location 'centralus'.
2 Answers

You need to log in :

az login
az account set --subscription <YOUR SUB ID>
az aks get-credentials --resource-group <AKS RG> --name <AKS NAME>

The 'CentralUS' location doesn't accept new VM with the type of subscription you have. You need to use another location.

To do that, you need to declare a variable 'defaultRegion' in the bash shell (ex.: declare defaultRegion=eastus) before executing wget

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