`DefaultResourceGroup-CUS` Keeps Getting Created

Question

`DefaultResourceGroup-CUS` Keeps Getting Created

Mike-E-angelo 591

Hello All,

I am deploying to Azure via Visual Studio Publish, and I keep seeing a DefaultResourceGroup-CUS resource group being created without any resources being in it. How do I track where/how this is being create?

Thank you for any assistance you can provide.

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Answer 1

Andriy Bilous 11,821 MVP Volunteer Moderator

Hello @Mike-E-angelo

There are multiple reasons why DefaultResourceGroup-XXX is created in Azure.

Azure DefaultResourceGroup-XXX is created, related to your region and used by all the commands that you run from your local Azure CLI or from Azure Cloud Shell.
Visual Studio is also using same concept. It is provisioning and deploying resources in Azure and requires Azure resource group DefaultResourceGroup-XXX.
Azure is creating a resource group called DefaultResourceGroup-XXX where the XXX is related to your region and within that same resource group you have a DefaultWorkspace-SubscriptionID-XXX then it is most likely associated with Azure Security Center.
To stop Azure Security Center from creating the following Resource Group log on the Azure Security Center, click on Pricing & settings, select the subscription from the list, then click on Data collection. In the Workspace configuration section, we can check that the default is being configured, which is Use workspace(s) created by Security Center (default).

https://techgenix.com/azure-default-resource-group/

Mike-E-angelo 591 Reputation points

2022-01-11T10:48:51.247+00:00

Thank you for the reply @Andriy Bilous . Unfortunately I see zero resources with this resource group, and do not see any subscriptions as you mention. Additionally, I am not familiar with Azure Security Center and it does not appear in the portal for me. I am still unclear on how this resource group is/was created. Is there a way to see who created it and how/why?

Thank you for any continued assistance you can provide.
Andriy Bilous 11,821 Reputation points MVP Volunteer Moderator

2022-01-11T11:17:44.387+00:00

Azure DefaultResourceGroup-XXX is used by Azure for the resources that are created automatically(Log Analytics, etc...) and all the commands that you run from your local Azure CLI or from Azure Cloud Shell.

You can open your resource group DefaultResourceGroup-CUS, show hidden resources and then check what are inside this resource group.
Mike-E-angelo 591 Reputation points

2022-01-11T11:23:44.037+00:00

Thank you for your continued assistance @Andriy Bilous . I am in agreement that this appears to be created automatically, however, whatever is creating this does not appear to be sticking around for the ride. Is there a way to see how/why/when this was created and for which purpose? I now see both DefaultResourceGroup-EUS and DefaultResourceGroup-CUS created in my account, both have empty resource list, even when Hidden is marked.
Andriy Bilous 11,821 Reputation points MVP Volunteer Moderator

2022-01-11T12:07:48.21+00:00

Resource group DefaultResourceGroup-EUS was added by Azure when you have created Azure resources in East US region.
Resource group DefaultResourceGroup-CUS was added by Azure when you have created Azure resources in Central US region.

You may open any of the resource groups and check Activity Log, this may answer question When.

May you please write what resources have you created recently, so it would be easier to understand How and Why above resource groups were created?
Thanks
Mike-E-angelo 591 Reputation points

2022-01-11T12:11:27.377+00:00

Thank you for that @Andriy Bilous while we know when, we still do not know the important parts, how and why.

I have created several app services, one in the portal and several from Visual Studio. At no time did I create a resource group with the names of the resource groups that now exist within my account with zero resources.

Definitely feels like a bug is afoot, especially if there is no log to check to see how/why a group was created (which feels like another bug in its own right).
Andriy Bilous 11,821 Reputation points MVP Volunteer Moderator

2022-01-11T12:49:12.947+00:00

Could you please post the extended information from your Activity Log, so I could see what id has created resource groups?
Mike-E-angelo 591 Reputation points

2022-01-11T12:53:45.83+00:00

I appreciate your continued assistance and suggestions here @Andriy Bilous . I did look in the activity log, and searched for "extended" and did not see anything obvious. There are no entries in the Activity Log either. Additionally, a search for azure resource group Activity Log extended information did not turn up anything obvious. I appreciate any further suggestions/guidance to help troubleshoot and track down this issue.
Andriy Bilous 11,821 Reputation points MVP Volunteer Moderator

2022-01-12T12:04:26.647+00:00

Here are few more details. Hope I will help you to answer all your questions.
Azure DefaultResourceGroup-XXX is used by all the commands that you run from your local Azure CLI or from Azure Cloud Shell.

DefaultResourceGroup-XXX is used and created automatically every time when you run Azure CLI, Powershell or Azure Cloud Shell commands.

Visual Studio is also using same concept. It is provisioning and deploying resources in Azure and requires Azure resource group DefaultResourceGroup-XXX.

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`DefaultResourceGroup-CUS` Keeps Getting Created

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