Connect Astro to Azure data sources

Use the information provided here to learn how you can securely connect your Astro data plane to your existing Azure instance. A connection to Azure allows Astro to access data stored on your Azure instance and is a necessary step to running pipelines in a production environment.

Connection options

The connection option that you choose is determined by the requirements of your organization and your existing infrastructure. You can choose a straightforward implementation, or a more complex implementation that provides enhanced data security. Astronomer recommends that you review all of the available connection options before selecting one for your organization.

Public endpoints

Publicly accessible endpoints allow you to quickly connect Astro to Azure. To configure these endpoints, you can use one of the following methods:

• Set environment variables on Astro with your endpoint information. See Set environment variables on Astro.
• Create an Airflow connection with your endpoint information. See Managing Connections.

When you use publicly accessible endpoints to connect Astro and Azure, traffic moves directly between your Astro data plane and the Azure API endpoint. Data in this traffic never reaches the control plane, which is managed by Astronomer.

VNet peering

Every Astro cluster runs in a dedicated Virtual Network (VNet). To set up a private connection between an Astro VNet and an Azure VNet, you can create a VNet peering connection. VNet peering ensures private and secure connectivity, reduces network transit costs, and simplifies network layouts.

To create a VNet peering connection between an Astro VNet and an Azure VNet, contact Astronomer support and provide the following information:

• Astro cluster ID and name
• Azure TenantID and Subscription ID of the target VNet
• Region of the target VNet
• VNet ID of the target VNet
• Classless Inter-Domain Routing (CIDR) block of the target VNet

After receiving your request, Astronomer support initiates a peering request and creates the routing table entries in the Astro VNet. To allow multidirectional traffic between Airflow and your organization's data sources, the owner of the target VNet needs to accept the peering request and create the routing table entries in the target VNet.

Azure Private Link

Use Azure Private Link to create private connections from Astro to your Azure services without exposing your data to the public internet.

Astro clusters are pre-configured with the Azure blob private endpoint.

To request additional endpoints, or assistance connecting to other Azure services, contact Astronomer support.

When Astronomer support adds an Azure private endpoint, a corresponding private DNS zone and Canonical Name (CNAME) records are also created to allow you to address the service by its private link name. In some circumstances, you might need to modify your DAGs to address the service by its private link name. For example, StorageAccountA.privatelink.blob.core.windows.net instead of StorageAccountA.blob.core.windows.net.

You'll incur additional Azure infrastructure costs for every Azure private endpoint that you use. See Azure Private Link pricing.

Authorization options

Authorization is the process of verifying a user or service's permissions before allowing them access to organizational applications and resources. Astro clusters must be authorized to access external resources from your cloud.

Azure account access keys

When you create an Azure storage account, two 512-bit storage account access keys are generated for the account. You can use these keys to authorize access to data in your storage account with Shared Key authorization.