Few Azure Data Explorer Free Clusters

Andrzej 0

Hello, I would like to create few Azure Data Explorer Free Clusters and use them simultaneously to keep my data for different projects (development), is it even possible? The second question is - is it possible to give some permission to other users to use Cluster URI and explore the Free Cluster? I've sent a link to a friend and he didn't have permissions.

Chandra Boorla 7,335 Reputation points Microsoft Vendor

2025-01-23T17:09:54.17+00:00
Hi @Andrzej

Greetings & Welcome to Microsoft Q&A forum! Thanks for posting your query!

I would like to create few Azure Data Explorer Free Clusters and use them simultaneously to keep my data for different projects (development), is it even possible?

Yes, you can create multiple Azure Data Explorer Free Clusters for different projects simultaneously. Each free cluster allows you to explore various data ingestion methods and use the Kusto Query Language without needing an Azure subscription or a credit card.

For more details, please refer the below documentations:

What is a free Azure Data Explorer cluster

Create a free Azure Data Explorer cluster

is it possible to give some permission to other users to use Cluster URI and explore the Free Cluster? I've sent a link to a friend and he didn't have permissions.

By default, Free Clusters are private to the user who created them. Regarding permissions, the Free Cluster does not support user permissions in the same way that a full Azure Data Explorer cluster does. Therefore, if you share the Cluster URI with someone else, they may not have the necessary permissions to access it, which is likely why your friend could not connect.

Sharing Access to Free Clusters

Permissions - You can grant permissions to other users to access your Free Cluster. To do this - Use Azure Role-Based Access Control (RBAC) to assign roles to users. Ensure that the users have the necessary permissions to access the cluster URI.

Common Issues - If your friend did not have permissions - Check if the correct role (e.g., "Reader" or "Contributor") was assigned to them. Verify that they are using the correct Cluster URI and that their Microsoft account is linked to the Azure subscription.

Conclusion

You can effectively manage multiple Free Clusters for different projects while ensuring that you set the right permissions for collaboration with other users.

I hope this information helps. Please do let us know if you have any further queries.

Kindly consider upvoting the comment if the information provided is helpful. This can assist other community members in resolving similar issues.

Thank you.
Andrzej 0 Reputation points

2025-01-24T14:17:38.2566667+00:00

Hi @Chandra Boorla , I'm trying to find how can I create another Free cluster on same account, as I've created one I can't see Add New or something. Second question: for how long is the data available on free ADX, is it extendable?

1 answer

Chandra Boorla 7,335 Reputation points Microsoft Vendor

2025-01-24T22:41:09.5766667+00:00

@Andrzej

I apologize for any inaccuracies in my previous response.

Creating Another Free Cluster on the Same Account

Unfortunately, Azure restricts users to one free Azure Data Explorer (ADX) cluster per subscription/account. If you have already created one, you won’t see an option to add another free cluster in the same subscription.

Use the existing free cluster - The most practical approach is to leverage the free cluster you have already created. You can organize your different projects by creating separate databases within this single cluster. This provides logical separation and keeps everything within the free tier limitations.

for how long is the data available on free ADX, is it extendable?

Azure Data Explorer Free Clusters are available for a one-year trial. During this period, the cluster remains active, and users can utilize the features of Azure Data Explorer. The data in Azure Data Explorer Free Clusters is available for a full year and will be automatically extended. This allows users to maintain access to their analytics database without needing to take additional action.

Cache Period - The 31-day cache period refers to how long frequently accessed data is kept in faster storage for quicker queries. After this period, older data may still exist but could be stored in slower storage, which may impact query performance.

For more details, please refer: Create a table's retention and cache policies with the table retention policy wizard

I apologize again for the incorrect information. Thank you for pointing out my mistake! I appreciate your help in improving my responses.I hope this information helps.

Kindly consider upvoting the comment if the information provided is helpful. This can assist other community members in resolving similar issues.

Thank you.
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Andrzej 0 Reputation points

2025-01-27T09:54:54.27+00:00

@Chandra Boorla
"Sharing Access to Free Clusters

Permissions - You can grant permissions to other users to access your Free Cluster. To do this - Use Azure Role-Based Access Control (RBAC) to assign roles to users. Ensure that the users have the necessary permissions to access the cluster URI."

Could you tell me where can I find it in https://dataexplorer.azure.com/, I can't see it anywhere and I would like to give some permissions to my colleague.

Andrzej 0 Reputation points

2025-01-27T09:56:05.4233333+00:00

Sorry, posted twice same question.

Smaran Thoomu 19,310 Reputation points Microsoft Vendor

2025-01-27T14:44:15.71+00:00

Hi @Andrzej

As mentioned earlier by Chandra Boorla , Unfortunately, Azure Data Explorer Free Clusters do not natively support Azure Role-Based Access Control (RBAC) like the paid Azure Data Explorer clusters. The permissions for Free Clusters are limited, and sharing access with other users is not supported through the standard RBAC methods available in https://dataexplorer.azure.com/.

Free Clusters are designed primarily for individual testing and development purposes, and their permissions are restricted to the account that created them.

phemanth 13,305 Reputation points Microsoft Vendor

2025-01-28T08:22:32.57+00:00

@Andrzej We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. In case if you have any resolution please do share that same with the community as it can be helpful to others. Otherwise, will respond with more details and we will try to help.

Andrzej 0 Reputation points

2025-01-28T10:33:08.54+00:00

Hi @Smaran Thoomu , @Chandra Boorla mentioned: "Sharing Access to Free Clusters

Permissions - You CAN grant permissions to other users to access your Free Cluster. To do this - Use Azure Role-Based Access Control (RBAC) to assign roles to users. Ensure that the users have the necessary permissions to access the cluster URI."

so what's the truth?

Andrzej 0 Reputation points

2025-01-28T12:20:25.19+00:00

again answered twice, sorry

Chandra Boorla 7,335 Reputation points Microsoft Vendor

2025-01-29T10:44:14.13+00:00

@Andrzej

I sincerely appreciate your patience and for pointing this out. I’d like to clarify the confusion regarding access permissions for Azure Data Explorer Free Clusters.

Unlike paid Azure Data Explorer (ADX) clusters, Free Clusters do not support Azure Role-Based Access Control (RBAC) for granting permissions to other users. These clusters are tied to the account that created them and are intended for individual use.

Why Sharing Isn't Supported?

Free Clusters do not provide RBAC settings within dataexplorer.azure.com.

Even if you share the Cluster URI, others will not be able to access it, as Free Clusters lack the multi-user access controls available in standard ADX deployments.

I truly appreciate you bringing this up. My previous response contained incorrect information regarding RBAC in Free Clusters, and I sincerely apologize for any misunderstanding.

I hope this clears up your concern. Please let me know if you need further clarification! Thank you.
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