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Tutorial: Deploy a web application connected to Azure Blob Storage with Service Connector
Create a web app connected to Azure Blob Storage with Service Connector.
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05/03/2022
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Tutorial: Deploy a web application connected to Azure Blob Storage with Service Connector

Learn how to access Azure Blob Storage for a web app (not a signed-in user) running on Azure App Service by using managed identities. In this tutorial, you'll use the Azure CLI to complete the following tasks:

[!div class="checklist"]

  • Set up your initial environment with the Azure CLI
  • Create a storage account and an Azure Blob Storage container.
  • Deploy code to Azure App Service and connect to storage with managed identity using Service Connector

Prerequisites

  • An Azure account with an active subscription. Create an account for free.
  • The Azure CLI 2.30.0 or higher. You'll use it to run commands in any shell to provision and configure Azure resources.

Set up your initial environment

  1. Check that your Azure CLI version is 2.30.0 or higher:

    az --version

    If you need to upgrade, try the az upgrade command (requires version 2.11+) or see Install the Azure CLI.

  2. Sign in to Azure using the CLI:

    az login

    This command opens a browser to gather your credentials. When the command finishes, it shows a JSON output containing information about your subscriptions.

    Once signed in, you can run Azure commands with the Azure CLI to work with resources in your subscription.

Clone or download the sample app

  1. Clone the sample repository:

    git clone https://github.com/Azure-Samples/serviceconnector-webapp-storageblob-dotnet.git

  2. Go to the repository's root folder:

    cd serviceconnector-webapp-storageblob-dotnet

Create the App Service app

  1. In the terminal, make sure you're in the WebAppStorageMISample repository folder that contains the app code.

  2. Create an App Service app (the host process) with the az webapp up command below.

     az webapp up --name <app-name> --sku B1 --location eastus --resource-group ServiceConnector-tutorial-rg

    Replace the following placeholder texts with your own data:

    • For the --location argument, make sure to use a region supported by Service Connector.
    • Replace <app-name> with a unique name across all Azure (the server endpoint is https://<app-name>.azurewebsites.net). Allowed characters for <app-name> are A-Z, 0-9, and -. A good pattern is to use a combination of your company name and an app identifier.

Create a storage account and a Blob Storage container

In the terminal, run the following command to create a general purpose v2 storage account and a Blob Storage container.

az storage account create --name <storage-name> --resource-group ServiceConnector-tutorial-rg --sku Standard_RAGRS --https-only

Replace <storage-name> with a unique name. The name of the container must be in lowercase, start with a letter or a number, and can include only letters, numbers, and the dash (-) character.

Connect an App Service app to a Blob Storage container with a managed identity

In the terminal, run the following command to connect your web app to blob storage with a managed identity.

az webapp connection create storage-blob -g ServiceConnector-tutorial-rg -n <app-name> --tg ServiceConnector-tutorial-rg --account <storage-name> --system-identity

Replace the following placeholder texts with your own data:

  • Replace <app-name> with your web app name you used in step 3.
  • Replace <storage-name> with your storage app name you used in step 4.

Note

If you see the error message "The subscription is not registered to use Microsoft.ServiceLinker", please run az provider register -n Microsoft.ServiceLinker to register the Service Connector resource provider and run the connection command again.

Run sample code

In the terminal, run the following command to open the sample application in your browser. Replace <app-name> with the web app name you used earlier.

az webapp browse --name <app-name>

The sample code is a web application. Each time you refresh the index page, the application creates or updates a blob with the text Hello Service Connector! Current is {UTC Time Now} to the storage container and reads back to show it in the index page.

Next steps

Follow the tutorials listed below to learn more about Service Connector.

[!div class="nextstepaction"] Learn about Service Connector concepts