az aks is broken after `az extension update --name aks-preview`

[pramodsetlur]

Describe the bug

I am trying to enable NodeAutoProvisioning (Karpenter) for AKS using az aks update --resource-group aks-cilium-karpenter --name aks-cilium-karpeter --node-provisioning-mode Auto.

This command required the following preview extensions. After adding and updating the extension, any az aks commands does not work.

➜  ~ az extension add --name aks-preview
az extension update --name aks-preview

Related command

➜  ~ az aks list
➜  ~ az aks update --resource-group aks-cilium-karpenter --name aks-cilium-karpeter --node-provisioning-mode Auto

Errors

The command failed with an unexpected error. Here is the traceback:
'NoneType' object has no attribute '__dict__'
Traceback (most recent call last):
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/knack/cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 564, in execute
    self.commands_loader.load_arguments(command)
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/__init__.py", line 527, in load_arguments
    loader.load_arguments(command)  # this adds entries to the argument registries
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/psetlur/.azure/cliextensions/aks-preview/azext_aks_preview/__init__.py", line 45, in load_arguments
    load_arguments(self, command)
  File "/Users/psetlur/.azure/cliextensions/aks-preview/azext_aks_preview/_params.py", line 433, in load_arguments
    k8s_support_plans = self.get_models(
                        ^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/__init__.py", line 782, in get_models
    return get_sdk(self.cli_ctx, resource_type, *attr_args, mod='models', operation_group=operation_group)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/profiles/__init__.py", line 91, in get_sdk
    return _sdk_get_versioned_sdk(cli_ctx.cloud.profile, resource_type, *attr_args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 694, in get_versioned_sdk
    sdk_path = get_versioned_sdk_path(api_profile, resource_type, operation_group)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 686, in get_versioned_sdk_path
    api_version = getattr(api_version, operation_group)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 481, in __getattr__
    self._resolve()
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 468, in _resolve
    for operation_group_name, operation_type in self._client_type.__dict__.items():
                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute '__dict__'. Did you mean: '__dir__'?

Issue script & Debug output

n/a

Expected behavior

The cluster should be updated with NAP and az aks list should be able to list the cluster as required.

Environment Summary

➜  ~ az --version
azure-cli                         2.65.0

core                              2.65.0
telemetry                          1.1.0

Extensions:
account                            0.2.5
aks-preview                      9.0.0b6

Dependencies:
msal                              1.31.0
azure-mgmt-resource               23.1.1

Python location '/usr/local/Cellar/azure-cli/2.65.0_1/libexec/bin/python'
Extensions directory '/Users/psetlur/.azure/cliextensions'

Python (Darwin) 3.12.7 (main, Oct  1 2024, 02:05:46) [Clang 15.0.0 (clang-1500.3.9.4)]

Legal docs and information: aka.ms/AzureCliLegal


Your CLI is up-to-date.

Additional context

No response

[yonzhan]

Thank you for opening this issue, we will look into it.

[github-actions[bot]]

Here are some similar issues that might help you. Please check if they can solve your problem.

• #19450

[microsoft-github-policy-service[bot]]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @dyu1208, @FumingZhang, @andyliuliming.

[pramodsetlur]

Something that could be related to this issue. I am also unable to ssh into a VM using a bastion host.

➜  ~ az network bastion ssh --name aks-vnet-23126944-bastion --resource-group MC_aks-cilium-karpenter_aks_cilium-karpenter_westus --target-resource-id /subscriptions/xxxxxxxx/resourceGroups/aks-clium-karpenter/providers/Microsoft.Compute/virtualMachines/kubectl-client --auth-type ssh-key --username azureuser
The command failed with an unexpected error. Here is the traceback:
No module named 'pkg_resources'
Traceback (most recent call last):
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/knack/cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 666, in execute
    raise ex
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 733, in _run_jobs_serially
    results.append(self._run_job(expanded_arg, cmd_copy))
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 703, in _run_job
    result = cmd_copy(params)
             ^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 336, in __call__
    return self.handler(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/commands/command_operation.py", line 121, in handler
    return op(**command_args)
           ^^^^^^^^^^^^^^^^^^
  File "/Users/psetlur/.azure/cliextensions/bastion/azext_bastion/custom.py", line 145, in ssh_bastion_host
    _test_extension(SSH_EXTENSION_NAME)
  File "/Users/psetlur/.azure/cliextensions/bastion/azext_bastion/custom.py", line 78, in _test_extension
    from pkg_resources import parse_version
ModuleNotFoundError: No module named 'pkg_resources'
To check existing issues, please visit: https://github.com/Azure/azure-cli/issues

[jhaley32]

I'm also seeing this exact issue 'NoneType' object has no attribute '__dict_ when attempting to use az aks

[bebound]

Something that could be related to this issue. I am also unable to ssh into a VM using a bastion host.

➜  ~ az network bastion ssh --name aks-vnet-23126944-bastion --resource-group MC_aks-cilium-karpenter_aks_cilium-karpenter_westus --target-resource-id /subscriptions/xxxxxxxx/resourceGroups/aks-clium-karpenter/providers/Microsoft.Compute/virtualMachines/kubectl-client --auth-type ssh-key --username azureuser
The command failed with an unexpected error. Here is the traceback:
No module named 'pkg_resources'
Traceback (most recent call last):
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/knack/cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 666, in execute
    raise ex
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 733, in _run_jobs_serially
    results.append(self._run_job(expanded_arg, cmd_copy))
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 703, in _run_job
    result = cmd_copy(params)
             ^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 336, in __call__
    return self.handler(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/azure-cli/2.65.0_1/libexec/lib/python3.12/site-packages/azure/cli/core/commands/command_operation.py", line 121, in handler
    return op(**command_args)
           ^^^^^^^^^^^^^^^^^^
  File "/Users/psetlur/.azure/cliextensions/bastion/azext_bastion/custom.py", line 145, in ssh_bastion_host
    _test_extension(SSH_EXTENSION_NAME)
  File "/Users/psetlur/.azure/cliextensions/bastion/azext_bastion/custom.py", line 78, in _test_extension
    from pkg_resources import parse_version
ModuleNotFoundError: No module named 'pkg_resources'
To check existing issues, please visit: https://github.com/Azure/azure-cli/issues

Weird, setuptools is missing.

I think this issue is caused by the 3.12 bump in homebrew. Wait for homebrew member's response: https://github.com/Homebrew/homebrew-core/pull/194884#issuecomment-2425815824

[jaromirmikulik]

From my perspective, it could be caused by: https://github.com/Azure/azure-cli/issues/30148

[jhaley32]

I'm also seeing this exact issue 'NoneType' object has no attribute '__dict_ when attempting to use az aks

Oddly enough, I was able to get mine working by running az extension remove --name aks-preview. Testing to see if it was gone showed that it was still there and actually working. Not sure what that means.

[mscholze]

I also ran into this problem. Was fixed with the latest update homebrew azure-cli (2.65.0_2).

[pramodsetlur]

brew upgrade azure-cli fixed the issue. Thank you for the quick fix!