Azure Synapse VNet Integration with disabled "Managed Virtual Network" - azure

I've an Azure Synapse created without the option "Enable Managed Virtual Network". I have to integrate Synapse in an Azure Virtual Network.
I'm following the documentation at this link.
What additional actions should I perform due to the missing configuration "Enable Managed Virtual Network"?
I would like to avoid to drop and recreate the Azure Synapse.

Ah in your case if you want your notebook to access a linked storage resources under a certain storage account, add managed private endpoints under your Azure Synapse Analytics Studio. The storage account name should be the one your notebook needs to access.
And to add this managed private endpoint you would have to enable a managed virtual network for your workspace. Else you the service will be inaccessible as in snip below after I repro.
its only this step (Create private endpoints for workspace linked storage) that may require, Else you are good to follow the doc ahead .

Related

Can I add an Azure Synapse Workspace to my own Virtual Network?

I'm building a data-architecture with Azure Synapse and an ADLS2 data lake/storage account. If I want to create a Linked service that moves data from the storage account to the serverless/dedicated SQL-pool I have several options.
In my storage account, I can "enable access from all networks" so that the Integration Runtime in my synapse workspace is free to bypass the Storage account firewall. For obvious reasons this is not ideal.
I can create my Synapse workspace with "Managed virtual network" option enabled - and create a managed private endpoint between the two services.
However, I'm wondering whether it's also possible (Like it is in other Azure services) to add my Synapse workspace to an already existing virtual network, and use private endpoints to connect the services instead of managed private endpoints? I.e. connecting the services through "non-managed" private endpoints? When I browse the documentation it seems impossible;
When you create a Synapse workspace, you can choose to enable a
Managed virtual network to be associated with it. If you do not enable
Managed virtual network for your workspace when you create it, your
workspace is in a shared virtual network along with other Synapse
workspaces that do not have a Managed virtual network associated with
it. If you enabled Managed virtual network when you created the
workspace, then your workspace is associated with a dedicated virtual
network managed by Azure Synapse. These virtual networks are not
created in your customer subscription. Therefore, you will not be able
to grant traffic from these virtual networks access to your secured
storage account using network rules described above.
Any idea as to why Synapse was created as such? Is there any way to bypass this limitation?

Accessing Azure Storage Accounts with Selected Network Enabled

As per the requirements, I need to Enable Firewall with Selected Network ON for Azure Storage Accounts. But when I do the same along with adding all required IPs, Azure Function App and Azure Data Factory is going down.
Currently the VNET is unavailable and cannot be created. Managed Identity is not an option as Contributor role unavailable.
Is there a way to to configure the Data Factory and Function Apps after enabling FireWall with selected networks for Azure KeyVault and Azure Storage Accounts.
Please find the below steps helps to work around:
Is there a way to to configure the Data Factory and Function Apps after enabling FireWall with selected networks for Azure KeyVault and Azure Storage Accounts.
When Network rules like specified IP Addresses, IP Ranges, subnets are configured to the storage accounts, then that storage accounts can only be accessed by applications that request data over the specified set of networks or through the specified set of Azure resources.
Also, the option Allow Trusted Services is set to ON while enabling the firewall for a storage account, which allows connectivity from Azure trusted services like Data Factory, Azure functions, etc.
Visit this documentation to know the list of trusted services allowed to access a key vault in Azure.
You have to create the VNet, attach to the Azure Function App which helps to connect to the Storage Account.
Currently the VNET is unavailable and cannot be created. Managed Identity is not an option as Contributor role unavailable.
To enable a service endpoint for a subnet/IP Addresses attached to Storage account, you can have custom role like Microsoft.Network/virtualNetworks/subnets/joinViaServiceEndpoint/action.
Refer to MSFT Docs1 and here for more information.

Azure Storage Account Firewall Permissions for Vulnerability Assessment

I have created a storage account for use in storing the results of an Azure Vulnerability Assessment on an Azure SQL Database.
If the firewall on the storage account is disabled, allowing access from all networks, Azure Vulnerability Scans work as expected.
If the firewall is enabled, the Azure Vulnerability Scan on the SQL Database reports an error, saying the storage account is not valid or does not exist.
Checking the box for "Allow Azure services on the trusted services list to access this storage account." in Networking properties for the storage account does not work to resolve this issue, though it is the recommended step in the documentation here: https://learn.microsoft.com/en-us/azure/azure-sql/database/sql-database-vulnerability-assessment-storage
Allow Azure Services
What other steps could resolve this issue, rather than just disabling the firewall?
You have to add the subnet and vnet that is being used by the SQL Managed Instance as mentioned in the document you are following . You can refer the below screenshot:
After enabling the service endpoint status as shown in the above image , Click Add . After adding the vnet it should look like below:
After this is done , Click on save and you should be able to resolve the issue.
Reference:
Store Vulnerability Assessment scan results in a storage account accessible behind firewalls and VNets - Azure SQL Database | Microsoft Docs

How to connect to Azure Databricks using Service Principal?

I am trying to launch a cluster using Azure DataBricks using portal but I am getting an issue saying "Subnet provided does not have security group associated to it."
But I want to connect it using the service Principal.
Please help!!
While deploying Azure Databricks in your Virtual Network, make sure to associate Network Security group (NSG) rules that allows communication with the Azure Databricks control plane.
The virtual network must include two subnets dedicated to Azure Databricks:
A private subnet with a configured network security group that allows
cluster-internal communication
A public subnet with a configured network security group that allows
communication with the Azure Databricks control plane.
The following table displays the current network security group rules used by Azure Databricks. In order to ensure that your Azure Databricks service runs smoothly, Azure Databricks can change these rules at any time. This topic and table will be updated whenever such a modification occurs.
Reference: Deploy Azure Databricks in your Virtual Network (VNET Injection)
Hope this helps.

Azure Databricks: Accessing Blob Storage Behind Firewall

I am reading files on an Azure Blob Storage account (gen 2) from an Azure Databricks Notebook. Both services are in the same region (West Europe). Everything works fine, except when I add a firewall in front of the storage account. I have opted to allow "trusted Microsoft services":
However, running the notebook now ends up with an access denied error:
com.microsoft.azure.storage.StorageException: This request is not authorized to perform this operation.
I tried to access the storage directly from Spark and by mounting it with dbutils, but same thing.
I would have assumed that Azure Databricks counts as a trusted Microsoft service? Furthermore I couldn't find solid information on IP ranges for Databricks regions that could be added to the firewall rules.
Yes, the Azure Databricks does not count as a trusted Microsoft service, you could see the supported trusted Microsoft services with the storage account firewall.
From networking, Here are two suggestions:
Find the Azure datacenter IP address (Original deprecated URL) and scope a region where your Azure Databricks located. Whitelist the IP list in the storage account firewall.
Deploy Azure Databricks in your Azure Virtual Network (Preview) then whitelist the VNet address range in the firewall of the storage account. You could refer to configure Azure Storage firewalls and virtual networks. Also, you have NSG to restrict inbound and outbound traffics from this Azure VNet. Note: you need to deploy Azure Databricks to your own VNet.
Hope this helps.
The described scenario only works if you deploy Azure Databricks in your own Azure Virtual Network (vnet). With this you are able to use Service Endpoints, so could add your Databricks vnet to the Blob Storage. With the default deployment this is not supported and not possible.
See the following Documentation for more details and a description how to get the vnet-injection feature enabled.
Enabling the mentioned exception does not work, as Azure Databricks is not in the list of trusted Services for Blob Storage. See the following Documentation which services still can access the storage account with the exception enabled.

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