az aks exception

[edknauer]

Describe the bug

On Ubuntu 24.04 all aks commands throw an exception. Below an example:

$ az aks get-credentials  -g XXXXXXX -n YYYYYYY

The command failed with an unexpected error. Here is the traceback:
'NoneType' object has no attribute '__dict__'
.....

A downgrade from aks-preview to version 14.0.0b3 fixes the problem, so it is probably a bug in aks-preview version 14.0.0b4

Related command

az aks get-credentials -g XXXXXXX -n YYYYYYY

Errors

The command failed with an unexpected error. Here is the traceback:
'NoneType' object has no attribute 'dict'
Traceback (most recent call last):
File "/opt/az/lib/python3.12/site-packages/knack/cli.py", line 233, in invoke
cmd_result = self.invocation.execute(args)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/az/lib/python3.12/site-packages/azure/cli/core/commands/init.py", line 564, in execute
self.commands_loader.load_arguments(command)
File "/opt/az/lib/python3.12/site-packages/azure/cli/core/init.py", line 549, in load_arguments
loader.load_arguments(command) # this adds entries to the argument registries
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/knauer/.azure/cliextensions/aks-preview/azext_aks_preview/init.py", line 45, in load_arguments
load_arguments(self, command)
File "/home/knauer/.azure/cliextensions/aks-preview/azext_aks_preview/_params.py", line 429, in load_arguments
k8s_support_plans = self.get_models(
^^^^^^^^^^^^^^^^
File "/opt/az/lib/python3.12/site-packages/azure/cli/core/init.py", line 804, in get_models
return get_sdk(self.cli_ctx, resource_type, *attr_args, mod='models', operation_group=operation_group)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/az/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 "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 692, in get_versioned_sdk
sdk_path = get_versioned_sdk_path(api_profile, resource_type, operation_group)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 684, in get_versioned_sdk_path
api_version = getattr(api_version, operation_group)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 479, in getattr
self._resolve()
File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 466, 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'?
To check existing issues, please visit: https://github.com/Azure/azure-cli/issues

Issue script & Debug output

$ az aks get-credentials  -g ek-aks-test -n ek-aks-test-cluster-01 --debug
cli.knack.cli: Command arguments: ['aks', 'get-credentials', '-g', 'XXXXXXX', '-n', 'YYYYYYYY', '--debug']
cli.knack.cli: __init__ debug log:
Enable color in terminal.
cli.knack.cli: Event: Cli.PreExecute []
cli.knack.cli: Event: CommandParser.OnGlobalArgumentsCreate [<function CLILogging.on_global_arguments at 0x7d154c5937e0>, <function OutputProducer.on_global_arguments at 0x7d154c2f67a0>, <function CLIQuery.on_global_arguments at 0x7d154c33bce0>]
cli.knack.cli: Event: CommandInvoker.OnPreCommandTableCreate []
cli.azure.cli.core: Modules found from index for 'aks': ['azext_aks_preview', 'azure.cli.command_modules.acs', 'azure.cli.command_modules.serviceconnector']
cli.azure.cli.core: Loading command modules:
cli.azure.cli.core: Name                  Load Time    Groups  Commands
cli.azure.cli.core: acs                       0.036        15        79
cli.azure.cli.core: serviceconnector          0.030        20       323
cli.azure.cli.core: Total (2)                 0.066        35       402
cli.azure.cli.core: These extensions are not installed and will be skipped: ['azext_ai_examples', 'azext_next']
cli.azure.cli.core: Loading extensions:
cli.azure.cli.core: Name                  Load Time    Groups  Commands  Directory
cli.knack.cli: Event: CommandLoader.OnLoadCommandTable []
cli.azure.cli.core: aks-preview               0.004        22       103  /home/knauer/.azure/cliextensions/aks-preview
cli.azure.cli.core: Total (1)                 0.004        22       103  
cli.azure.cli.core: Loaded 43 groups, 437 commands.
cli.azure.cli.core: Found a match in the command table.
cli.azure.cli.core: Raw command  : aks get-credentials
cli.azure.cli.core: Command table: aks get-credentials
cli.knack.cli: Event: CommandInvoker.OnPreCommandTableTruncate [<function AzCliLogging.init_command_file_logging at 0x7d154b4a4220>]
cli.azure.cli.core.azlogging: metadata file logging enabled - writing logs to '/home/knauer/.azure/commands/2025-04-24.16-07-00.aks_get-credentials.445562.log'.
az_command_data_logger: command args: aks get-credentials -g {} -n {} --debug
cli.knack.cli: Event: CommandInvoker.OnPreArgumentLoad [<function register_global_subscription_argument.<locals>.add_subscription_parameter at 0x7d154b504720>]
cli.knack.cli: Event: CommandLoader.OnLoadArguments []
cli.azure.cli.core.profiles._shared: Traceback (most recent call last):
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 653, in _get_attr
    op = import_module(full_mod_path)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/importlib/__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 999, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "/home/knauer/.azure/cliextensions/aks-preview/azext_aks_preview/vendored_sdks/azure_mgmt_preview_aks/__init__.py", line 9, in <module>
    from ._container_service_client import ContainerServiceClient
  File "/home/knauer/.azure/cliextensions/aks-preview/azext_aks_preview/vendored_sdks/azure_mgmt_preview_aks/_container_service_client.py", line 19, in <module>
    from azure.mgmt.core.tools import get_arm_endpoints
ImportError: cannot import name 'get_arm_endpoints' from 'azure.mgmt.core.tools' (/opt/az/lib/python3.12/site-packages/azure/mgmt/core/tools.py)

cli.azure.cli.core.azclierror: Traceback (most recent call last):
  File "/opt/az/lib/python3.12/site-packages/knack/cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 564, in execute
    self.commands_loader.load_arguments(command)
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/__init__.py", line 549, in load_arguments
    loader.load_arguments(command)  # this adds entries to the argument registries
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/knauer/.azure/cliextensions/aks-preview/azext_aks_preview/__init__.py", line 45, in load_arguments
    load_arguments(self, command)
  File "/home/knauer/.azure/cliextensions/aks-preview/azext_aks_preview/_params.py", line 429, in load_arguments
    k8s_support_plans = self.get_models(
                        ^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/__init__.py", line 804, in get_models
    return get_sdk(self.cli_ctx, resource_type, *attr_args, mod='models', operation_group=operation_group)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/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 "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 692, in get_versioned_sdk
    sdk_path = get_versioned_sdk_path(api_profile, resource_type, operation_group)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 684, in get_versioned_sdk_path
    api_version = getattr(api_version, operation_group)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 479, in __getattr__
    self._resolve()
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 466, 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__'?

cli.azure.cli.core.azclierror: The command failed with an unexpected error. Here is the traceback:
az_command_data_logger: The command failed with an unexpected error. Here is the traceback:
cli.azure.cli.core.azclierror: 'NoneType' object has no attribute '__dict__'
Traceback (most recent call last):
  File "/opt/az/lib/python3.12/site-packages/knack/cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 564, in execute
    self.commands_loader.load_arguments(command)
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/__init__.py", line 549, in load_arguments
    loader.load_arguments(command)  # this adds entries to the argument registries
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/knauer/.azure/cliextensions/aks-preview/azext_aks_preview/__init__.py", line 45, in load_arguments
    load_arguments(self, command)
  File "/home/knauer/.azure/cliextensions/aks-preview/azext_aks_preview/_params.py", line 429, in load_arguments
    k8s_support_plans = self.get_models(
                        ^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/__init__.py", line 804, in get_models
    return get_sdk(self.cli_ctx, resource_type, *attr_args, mod='models', operation_group=operation_group)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/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 "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 692, in get_versioned_sdk
    sdk_path = get_versioned_sdk_path(api_profile, resource_type, operation_group)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 684, in get_versioned_sdk_path
    api_version = getattr(api_version, operation_group)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 479, in __getattr__
    self._resolve()
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 466, 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__'?
az_command_data_logger: 'NoneType' object has no attribute '__dict__'
Traceback (most recent call last):
  File "/opt/az/lib/python3.12/site-packages/knack/cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 564, in execute
    self.commands_loader.load_arguments(command)
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/__init__.py", line 549, in load_arguments
    loader.load_arguments(command)  # this adds entries to the argument registries
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/knauer/.azure/cliextensions/aks-preview/azext_aks_preview/__init__.py", line 45, in load_arguments
    load_arguments(self, command)
  File "/home/knauer/.azure/cliextensions/aks-preview/azext_aks_preview/_params.py", line 429, in load_arguments
    k8s_support_plans = self.get_models(
                        ^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/__init__.py", line 804, in get_models
    return get_sdk(self.cli_ctx, resource_type, *attr_args, mod='models', operation_group=operation_group)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/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 "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 692, in get_versioned_sdk
    sdk_path = get_versioned_sdk_path(api_profile, resource_type, operation_group)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 684, in get_versioned_sdk_path
    api_version = getattr(api_version, operation_group)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 479, in __getattr__
    self._resolve()
  File "/opt/az/lib/python3.12/site-packages/azure/cli/core/profiles/_shared.py", line 466, 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__'?
To check existing issues, please visit: https://github.com/Azure/azure-cli/issues
cli.knack.cli: Event: Cli.PostExecute [<function AzCliLogging.deinit_cmd_metadata_logging at 0x7d154b4a44a0>]
az_command_data_logger: exit code: 1
cli.__main__: Command ran in 0.337 seconds (init: 0.092, invoke: 0.245)
telemetry.main: Begin splitting cli events and extra events, total events: 1
telemetry.client: Accumulated 0 events. Flush the clients.
telemetry.main: Finish splitting cli events and extra events, cli events: 1
telemetry.save: Save telemetry record of length 7942 in cache file under /home/knauer/.azure/telemetry/20250424160700780
telemetry.main: Begin creating telemetry upload process.
telemetry.process: Creating upload process: "/opt/az/bin/python3 /opt/az/lib/python3.12/site-packages/azure/cli/telemetry/__init__.py /home/knauer/.azure /home/knauer/.azure/telemetry/20250424160700780"
telemetry.process: Return from creating process 445580
telemetry.main: Finish creating telemetry upload process.

Expected behavior

The configuration for kubectl must be created

Environment Summary

{
  "azure-cli": "2.71.0",
  "azure-cli-core": "2.71.0",
  "azure-cli-telemetry": "1.1.0",
  "extensions": {
    "aks-preview": "14.0.0b4"
  }
}

Additional context

Ubuntu 24.04

[yonzhan]

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

[alyssa1303]

Hi! We're also seeing issue with az aks create command

az aks create -g
│ 122149478-3acd042a -n vms-pool --location
│ australiaeast --tier standard --no-ssh-key --kubernetes-version 1.32
│ --nodepool-name default --node-count 1 --node-vm-size Standard_D8ds_v5
│ --vm-set-type VirtualMachines --network-plugin azure --network-plugin-mode
│ overlay --pod-cidr 10.240.0.0/12 --node-osdisk-type Ephemeral
│ --enable-managed-identity': exit status 1. Output: ERROR: The command
│ failed with an unexpected error. Here is the traceback:
│ ERROR: 'NoneType' object has no attribute '__dict__'
│ Traceback (most recent call last):
│   File "/opt/az/lib/python3.12/site-packages/knack/cli.py", line 233, in invoke
│     cmd_result = self.invocation.execute(args)
│                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
│   File "/opt/az/lib/python3.12/site-packages/azure/cli/core/commands/__init__.py", line 564, in execute
│     self.commands_loader.load_arguments(command)
│   File "/opt/az/lib/python3.12/site-packages/azure/cli/core/__init__.py", line 549, in load_arguments
│     loader.load_arguments(command)  # this adds entries to the argument registries
│     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
│   File "/opt/az/azcliextensions/aks-preview/azext_aks_preview/__init__.py", line 45, in load_arguments
│     load_arguments(self, command)
│   File "/opt/az/azcliextensions/aks-preview/azext_aks_preview/_params.py", line 429, in load_arguments
│     k8s_support_plans = self.get_models(
│                         ^^^^^^^^^^^^^^^^
│   File "/opt/az/lib/python3.12/site-packages/azure/cli/core/__init__.py", line 804, in get_models

[surajssd]

Same issue on OSX as well while doing az aks nodepool add ...

[surajssd]

downgrading aks-preview extension worked for me:

az extension remove --name aks-preview
az extension add --name aks-preview --version 14.0.0b3

[jpayne3506]

Seeing this on 22.04 as well.

[surajssd]

I am not sure if this should be filed in the repo: https://github.com/Azure/azure-cli-extensions

[FumingZhang]

Please run pip install azure-mgmt-core==1.5.0 in your python environment as a workaround.
Raised issue #31322 to cli team to completely fix the problem.