Azure-docs: 'DeploymentDefinition' error when running 'az aks create'

[john-adkins]

After following the instructions to register the Windows AKS feature I see the following error when running "az aks create --resource-group staging-r1-aks --name stagingaks --node-count 2 --enable-addons monitoring --kubernetes-version 1.15.7 --generate-ssh-keys --windows-admin-password password-removed --windows-admin-username azureuser --vm-set-type VirtualMachineScaleSets --load-balancer-sku standard --network-plugin azure"

The behavior of this command has been altered by the following extension: aks-preview
The request content was invalid and could not be deserialized: 'Could not find member 'template' on object of type 'DeploymentDefinition'. Path 'template', line 1, position 12.'.

I am using azure-cli version 2.4.0 * and aks-preview version 0.4.43

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• ID: 6de70aec-9ebe-5655-6657-5c171de374b1
• Version Independent ID: c9eb35c8-8703-511b-987b-e2a441be2e47
• Content: Run Windows Server container in Azure Kubernetes Service cluster - Azure Kubernetes Service
• Content Source: articles/aks/windows-container-cli.md
• Service: container-service
• GitHub Login: @mlearned
• Microsoft Alias: mlearned

[Karishma-Tiwari-MSFT]

Thanks for the question. We are currently investigating and will update you shortly.

[msfreaks]

same issue here

[yogspatel]

same issue here

[rkttu]

Temporarily, you may bypass this problem by removing the AKS extension preview when you are creating a new AKS cluster.

1. Run az extension remove --name aks-preview first.
2. Create an AKS cluster with the command like az aks create --resource-group $RESGROUP --name $CLUSTER --node-count 2 --enable-addons monitoring --kubernetes-version $K8SVER --vm-set-type VirtualMachineScaleSets --load-balancer-sku standard --network-plugin azure --attach-acr $ACR.
3. Install AKS extension preview again and create Windows node pool. (az extension add --name aks-preview)

It seems the AKS extension preview generates an outdated ARM template. I hope the problem resolved soon.

[nboeckmann]

same issue here.

[Karishma-Tiwari-MSFT]

@jluk Multiple customers are seeing this issue, discussed here as well: https://github.com/Azure/azure-cli/issues/13121
Can you please share your insights on this issue? Thanks :)

[Karishma-Tiwari-MSFT]

@nboeckmann @msfreaks @john-adkins I am reaching out to the product team.

Meanwhile, please follow the workaround shared in the comment above: https://github.com/MicrosoftDocs/azure-docs/issues/53469#issuecomment-621248236

or Deploy AKS Cluster with Windows node-pool via Azure Portal.

[jluk]

@MikkelHegn for awareness on windows impact from the preview version. The engineering team is investigating the impacted of the preview-extension, but the work around above are valid. The is to remove the preview-extension.

[msfreaks]

although the workaround in https://github.com/MicrosoftDocs/azure-docs/issues/53469#issuecomment-621248236 is valid, it prevents you from assigning a custom resource group name for the nodes.

[marwanad]

The issue only impacts enabling the monitoring addon. You can still run all the commands normally with extensions enabled apart from:

az aks --enable-addons monitoring
az aks enable-addons -a monitoring

There's a fix out for the extension pending merge.

[Karishma-Tiwari-MSFT]

I will close this issue as the issue is being tracked here: https://github.com/Azure/azure-cli/issues/13121
Please follow that thread to track this issue.