azure.cli.core.azclierror.CLIInternalError: Unable to pull clusterdiagnosticchecks helm chart from the registry 'mcr.microsoft.com//azurearck8s/helmchart/stable/clusterdiagnosticchecks:0.2.2': Error: invalid_reference: invalid repository #9053
Description
Describe the bug
Fail to connect k8s cluster with azure arc:
Fail to connect k8s cluster with azure arc:
az connectedk8s connect -g <-HIDE->-test-infra-onboarding-rg6 -n Portal-Cluster --location
This operation might take a while...
Step: 2025-08-11T12-52-19Z: Validating custom access token
Step: 2025-08-11T12-52-19Z: Checking Provider Registrations
Step: 2025-08-11T12-52-22Z: Setting KubeConfig
Step: 2025-08-11T12-52-22Z: Escape Proxy Settings, if passed in
Step: 2025-08-11T12-52-23Z: Checking Connectivity to Cluster
Step: 2025-08-11T12-52-25Z: Do node validations
Step: 2025-08-11T12-52-26Z: Install Kubectl client if it does not exist
Step: 2025-08-11T12-52-26Z: Install Helm client if it does not exist
Step: 2025-08-11T12-52-26Z: Starting Pre-onboarding-check
Step: 2025-08-11T12-52-26Z: Creating folder for Cluster Diagnostic Checks Logs
Step: 2025-08-11T12-52-26Z: Get namespace of release: cluster-diagnostic-checks
Step: 2025-08-11T12-52-28Z: Determine Helmchart Export Path
Step: 2025-08-11T12-52-28Z: Pulling HelmChart: mcr.microsoft.com//azurearck8s/helmchart/stable/clusterdiagnosticchecks, Version: 0.2.2
An exception has occured while trying to execute cluster diagnostic checks container on the cluster.
Traceback (most recent call last):
File "C:\Users<-HIDE->.azure\cliextensions\connectedk8s\azext_connectedk8s_precheckutils.py", line 217, in executing_cluster_diagnostic_checks_job
chart_path = azext_utils.get_chart_path(
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users<-HIDE->.azure\cliextensions\connectedk8s\azext_connectedk8s_utils.py", line 191, in get_chart_path
pull_helm_chart(
File "C:\Users<-HIDE->.azure\cliextensions\connectedk8s\azext_connectedk8s_utils.py", line 277, in pull_helm_chart
raise CLIInternalError(
azure.cli.core.azclierror.CLIInternalError: Unable to pull clusterdiagnosticchecks helm chart from the registry 'mcr.microsoft.com//azurearck8s/helmchart/stable/clusterdiagnosticchecks:0.2.2': Error: invalid_reference: invalid repository
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users<-HIDE->.azure\cliextensions\connectedk8s\azext_connectedk8s_precheckutils.py", line 56, in fetch_diagnostic_checks_results
executing_cluster_diagnostic_checks_job(
File "C:\Users<-HIDE->.azure\cliextensions\connectedk8s\azext_connectedk8s_precheckutils.py", line 407, in executing_cluster_diagnostic_checks_job
raise CLIInternalError(f"Failed to execute Cluster Diagnostic Checks Job: {e}")
azure.cli.core.azclierror.CLIInternalError: Failed to execute Cluster Diagnostic Checks Job: Unable to pull clusterdiagnosticchecks helm chart from the registry 'mcr.microsoft.com//azurearck8s/helmchart/stable/clusterdiagnosticchecks:0.2.2': Error: invalid_reference: invalid repository
The pre-check result logs logs have been saved at this path: C:\Users<-HIDE->.azure\pre_onboarding_check_logs\Portal-Cluster-Mon-Aug-11-20.52.26-2025.
These logs can be attached while filing a support ticket for further assistance.
Related command
az connectedk8s connect -g <-HIDE->-test-infra-onboarding-rg6 -n Portal-Cluster --location
Errors
raise CLIInternalError(
azure.cli.core.azclierror.CLIInternalError: Unable to pull clusterdiagnosticchecks helm chart from the registry 'mcr.microsoft.com//azurearck8s/helmchart/stable/clusterdiagnosticchecks:0.2.2': Error: invalid_reference: invalid repository
Issue script & Debug output
This should not be a server side issue, client side construct MCR url in an incorrect way.
Expected behavior
az connectedk8s connect should run successfully.
Environment Summary
{
"azure-cli": "2.70.0",
"azure-cli-core": "2.70.0",
"azure-cli-telemetry": "1.1.0",
"extensions": {
"aks-preview": "13.0.0b8",
"application-insights": "0.1.14",
"azure-devops": "0.21.0",
"azure-iot-ops": "0.2.0b2",
"bastion": "0.3.0",
"config-manager": "1.1.7",
"connectedk8s": "1.10.8",
"connectedmachine": "0.5.1",
"cosmosdb-preview": "1.0.0",
"customlocation": "0.1.4",
"k8s-configuration": "2.2.0",
"k8s-extension": "1.6.7",
"monitor-control-service": "1.2.0"
}
}
Additional context
No response