Azure App Configuration

Detailed information on the Azure App Configuration configuration store component

Component format

To set up an Azure App Configuration configuration store, create a component of type configuration.azure.appconfig.

apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: <NAME>
spec:
  type: configuration.azure.appconfig
  version: v1
  metadata:
  - name: host # host should be used when Azure Authentication mechanism is used.
    value: <HOST>
  - name: connectionString # connectionString should not be used when Azure Authentication mechanism is used.
    value: <CONNECTIONSTRING>
  - name: maxRetries
    value: # Optional
  - name: retryDelay
    value: # Optional
  - name: maxRetryDelay
    value: # Optional
  - name: azureEnvironment # Optional, defaults to AZUREPUBLICCLOUD
    value: "AZUREPUBLICCLOUD"
  # See authentication section below for all options
  - name: azureTenantId # Optional
    value: "[your_service_principal_tenant_id]"
  - name: azureClientId # Optional
    value: "[your_service_principal_app_id]"
  - name: azureCertificateFile # Optional
    value : "[pfx_certificate_file_fully_qualified_local_path]"
  - name: subscribePollInterval # Optional
    value: #Optional [Expected format example - 1s|1m|1h]

Warning

The above example uses secrets as plain strings. It is recommended to use a secret store for the secrets as described here.

Spec metadata fields

Note: either host or connectionString must be specified.

Authenticating with Connection String

Access an App Configuration instance using its connection string, which is available in the Azure portal. Since connection strings contain credential information, you should treat them as secrets and use a secret store.

Authenticating with Azure AD

The Azure App Configuration configuration store component also supports authentication with Azure AD. Before you enable this component:

• Read the Authenticating to Azure document.
• Create an Azure AD application (also called Service Principal).
• Alternatively, create a managed identity for your application platform.

Set up Azure App Configuration

You need an Azure subscription to set up Azure App Configuration.

1. Start the Azure App Configuration creation flow. Log in if necessary.

2. Click Create to kickoff deployment of your Azure App Configuration instance.

3. Once your instance is created, grab the Host (Endpoint) or your Connection string:

   • For the Host: navigate to the resource’s Overview and copy Endpoint.
   • For your connection string: navigate to Settings > Access Keys and copy your Connection string.

4. Add your host or your connection string to an azappconfig.yaml file that Dapr can apply.

   Set the host key to [Endpoint] or the connectionString key to the values you saved earlier.

   Note

   In a production-grade application, follow the secret management instructions to securely manage your secrets.

Azure App Configuration request metadata

In Azure App Configuration, you can use labels to define different values for the same key. For example, you can define a single key with different values for development and production. You can specify which label to load when connecting to App Configuration

The Azure App Configuration store component supports the following optional label metadata property:

label: The label of the configuration to retrieve. If not present, the configuration store returns the configuration for the specified key and a null label.

The label can be populated using query parameters in the request URL:

GET curl http://localhost:<daprPort>/v1.0-alpha1/configuration/<store-name>?key=<key name>&metadata.label=<label value>

Related links

• Basic schema for a Dapr component
• Configuration building block

Last modified October 5, 2022: Azure App Configuration Request Metadata (#2810) (2115e41c)