Create a function in the Azure portal that runs on a schedule

Learn how to use the Azure portal to create a function that runs serverless on Azure based on a schedule that you define.

Prerequisites

To complete this tutorial:

  • If you don't have an Azure subscription, create a free account before you begin.

Create a function app

  1. From the Azure portal menu or the Home page, select Create a resource.

  2. In the New page, select Compute > Function App.

  3. On the Basics page, use the function app settings as specified in the following table.

    Setting Suggested value Description
    Subscription Your subscription The subscription under which this new function app is created.
    Resource Group myResourceGroup Name for the new resource group in which to create your function app.
    Function App name Globally unique name Name that identifies your new function app. Valid characters are a-z (case insensitive), 0-9, and -.
    Publish Code Option to publish code files or a Docker container.
    Runtime stack Preferred language Choose a runtime that supports your favorite function programming language. In-portal editing isn't currently supported for Python development.
    Version Version number Choose the version of your installed runtime.
    Region Preferred region Choose a region near you or near other services your functions access.
  4. Select Next : Hosting. On the Hosting page, enter the following settings.

    Setting Suggested value Description
    Storage account Globally unique name Create a storage account used by your function app. Storage account names must be between 3 and 24 characters in length and can contain numbers and lowercase letters only. You can also use an existing account, which must meet the storage account requirements.
    Operating system Windows An operating system is pre-selected for you based on your runtime stack selection, but you can change the setting if necessary. In-portal editing is only supported on Windows.
    Plan Consumption (Serverless) Hosting plan that defines how resources are allocated to your function app. In the default Consumption plan, resources are added dynamically as required by your functions. In this serverless hosting, you pay only for the time your functions run. When you run in an App Service plan, you must manage the scaling of your function app.
  5. Select Next : Monitoring. On the Monitoring page, enter the following settings.

    Setting Suggested value Description
    Application Insights Default Creates an Application Insights resource of the same App name in the nearest supported region. By expanding this setting or selecting Create new, you can change the Application Insights name or choose a different region in an Azure geography where you want to store your data.
  6. Select Review + create to review the app configuration selections.

  7. On the Review + create page, review your settings, and then select Create to provision and deploy the function app.

  8. Select the Notifications icon in the upper-right corner of the portal and watch for the Deployment succeeded message.

  9. Select Go to resource to view your new function app. You can also select Pin to dashboard. Pinning makes it easier to return to this function app resource from your dashboard.

    Deployment notification

Your new function app is ready to use. Next, you'll create a function in the new function app.

Function app successfully created.

Create a timer triggered function

  1. In your function app, select Functions, and then select + Add

    Add a function in the Azure portal.

  2. Select the Timer trigger template.

    Select the timer trigger in the Azure portal.

  3. Configure the new trigger with the settings as specified in the table below the image, and then select Create Function.

    Screenshot shows the New Function page with the Timer Trigger template selected.

    Setting Suggested value Description
    Name Default Defines the name of your timer triggered function.
    Schedule 0 */1 * * * * A six field CRON expression that schedules your function to run every minute.

Test the function

  1. In your function, select Code + Test and expand the logs.

    Test the timer trigger in the Azure portal.

  2. Verify execution by viewing the information written to the logs.

    View the timer trigger in the Azure portal.

Now, you change the function's schedule so that it runs once every hour instead of every minute.

Update the timer schedule

  1. In your function, select Integration. Here, you define input and output bindings for your function and also set the schedule.

  2. Select Timer (myTimer).

    Update the timer schedule in the Azure portal.

  3. Update the Schedule value to 0 0 */1 * * *, and then select Save.

    Update function timer schedule in the Azure portal.

You now have a function that runs once every hour, on the hour.

Clean up resources

Other quickstarts in this collection build upon this quickstart. If you plan to work with subsequent quickstarts, tutorials, or with any of the services you have created in this quickstart, do not clean up the resources.

Resources in Azure refer to function apps, functions, storage accounts, and so forth. They're grouped into resource groups, and you can delete everything in a group by deleting the group.

You created resources to complete these quickstarts. You may be billed for these resources, depending on your account status and service pricing. If you don't need the resources anymore, here's how to delete them:

  1. In the Azure portal, go to the Resource group page.

    To get to that page from the function app page, select the Overview tab and then select the link under Resource group.

    Select the resource group to delete from the function app page.

    To get to that page from the dashboard, select Resource groups, and then select the resource group that you used for this quickstart.

  2. In the Resource group page, review the list of included resources, and verify that they're the ones you want to delete.

  3. Select Delete resource group, and follow the instructions.

    Deletion may take a couple of minutes. When it's done, a notification appears for a few seconds. You can also select the bell icon at the top of the page to view the notification.

Next steps

You've created a function that runs based on a schedule. For more information about timer triggers, see Schedule code execution with Azure Functions.

Now that you've created your first function, let's add an output binding to the function that writes a message to a Storage queue.