az aks update --resource-group <rg_name> --name <name> --auto-upgrade-channel patch fails

[jonathanhar]

Describe the bug

Same as title.

Related command

az aks update --resource-group --name --auto-upgrade-channel patch

Errors

Could not find service principal or user assigned MSI for roleassignment The command failed with an unexpected error. Here is the traceback: 'NoneType' object has no attribute 'rpartition' Traceback (most recent call last): File "/opt/az/lib/python3.11/site-packages/knack/cli.py", line 233, in invoke cmd_result = self.invocation.execute(args) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/az/lib/python3.11/site-packages/azure/cli/core/commands/init.py", line 664, in execute raise ex File "/opt/az/lib/python3.11/site-packages/azure/cli/core/commands/init.py", line 731, in _run_jobs_serially results.append(self._run_job(expanded_arg, cmd_copy)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/az/lib/python3.11/site-packages/azure/cli/core/commands/init.py", line 701, in _run_job result = cmd_copy(params) ^^^^^^^^^^^^^^^^ File "/opt/az/lib/python3.11/site-packages/azure/cli/core/commands/init.py", line 334, in call return self.handler(*args, kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/az/lib/python3.11/site-packages/azure/cli/core/commands/command_operation.py", line 121, in handler return op(command_args) ^^^^^^^^^^^^^^^^^^ File "/opt/az/lib/python3.11/site-packages/azure/cli/command_modules/acs/custom.py", line 808, in aks_update return aks_update_decorator.update_mc(mc) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/az/lib/python3.11/site-packages/azure/cli/command_modules/acs/managed_cluster_decorator.py", line 8689, in update_mc return self.put_mc(mc) ^^^^^^^^^^^^^^^ File "/opt/az/lib/python3.11/site-packages/azure/cli/command_modules/acs/managed_cluster_decorator.py", line 8670, in put_mc self.postprocessing_after_mc_created(cluster) File "/opt/az/lib/python3.11/site-packages/azure/cli/command_modules/acs/managed_cluster_decorator.py", line 8500, in postprocessing_after_mc_created self.context.external_functions.add_virtual_node_role_assignment( File "/opt/az/lib/python3.11/site-packages/azure/cli/command_modules/acs/addonconfiguration.py", line 953, in add_virtual_node_role_assignment vnet_id = vnet_subnet_id.rpartition("/")[0] ^^^^^^^^^^^^^^^^^^^^^^^^^ AttributeError: 'NoneType' object has no attribute 'rpartition' To check existing issues, please visit: https://github.com/Azure/azure-cli/issues

Issue script & Debug output

Can't paste ( too long )

Expected behavior

https://learn.microsoft.com/en-us/azure/aks/tutorial-kubernetes-upgrade-cluster?tabs=azure-cli#configure-automatic-cluster-upgrades

Environment Summary

azure-cli 2.61.0

core 2.61.0 telemetry 1.1.0

Dependencies: msal 1.28.0 azure-mgmt-resource 23.1.1

Python location '/opt/az/bin/python3' Extensions directory '/home/jonathan/.azure/cliextensions'

Python (Linux) 3.11.8 (main, May 16 2024, 03:47:28) [GCC 11.4.0]

Legal docs and information: aka.ms/AzureCliLegal

Your CLI is up-to-date.

Additional context

No response

[azure-client-tools-bot-prd[bot]]

Hi @jonathanhar Find similar issue https://github.com/Azure/azure-cli/issues/19794.
Issue title	Enabling virtual node on an AKS cluster using System Managed Identity
Create time	2021-10-07
Comment number	4

---

Please confirm if this resolves your issue.

[yonzhan]

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

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

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