Quickstart: Create and deploy Azure Functions resources from an ARM template
In this article, you use Azure Functions with an Azure Resource Manager template (ARM template) to create a function app and related resources in Azure. The function app provides an execution context for your function code executions.
Completing this quickstart incurs a small cost of a few USD cents or less in your Azure account.
An Azure Resource Manager template is a JavaScript Object Notation (JSON) file that defines the infrastructure and configuration for your project. The template uses declarative syntax. You describe your intended deployment without writing the sequence of programming commands to create the deployment.
If your environment meets the prerequisites and you're familiar with using ARM templates, select the Deploy to Azure button. The template will open in the Azure portal.
After you create the function app, you can deploy Azure Functions project code to that app.
Prerequisites
Azure account
Before you begin, you must have an Azure account with an active subscription. Create an account for free.
Review the template
The template used in this quickstart is from Azure Quickstart Templates.
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"metadata": {
"_generator": {
"name": "bicep",
"version": "0.15.31.15270",
"templateHash": "11861629922040246994"
}
},
"parameters": {
"appName": {
"type": "string",
"defaultValue": "[format('fnapp{0}', uniqueString(resourceGroup().id))]",
"metadata": {
"description": "The name of the function app that you wish to create."
}
},
"storageAccountType": {
"type": "string",
"defaultValue": "Standard_LRS",
"allowedValues": [
"Standard_LRS",
"Standard_GRS",
"Standard_RAGRS"
],
"metadata": {
"description": "Storage Account type"
}
},
"location": {
"type": "string",
"defaultValue": "[resourceGroup().location]",
"metadata": {
"description": "Location for all resources."
}
},
"appInsightsLocation": {
"type": "string",
"metadata": {
"description": "Location for Application Insights"
}
},
"runtime": {
"type": "string",
"defaultValue": "node",
"allowedValues": [
"node",
"dotnet",
"java"
],
"metadata": {
"description": "The language worker runtime to load in the function app."
}
}
},
"variables": {
"functionAppName": "[parameters('appName')]",
"hostingPlanName": "[parameters('appName')]",
"applicationInsightsName": "[parameters('appName')]",
"storageAccountName": "[format('{0}azfunctions', uniqueString(resourceGroup().id))]",
"functionWorkerRuntime": "[parameters('runtime')]"
},
"resources": [
{
"type": "Microsoft.Storage/storageAccounts",
"apiVersion": "2022-05-01",
"name": "[variables('storageAccountName')]",
"location": "[parameters('location')]",
"sku": {
"name": "[parameters('storageAccountType')]"
},
"kind": "Storage",
"properties": {
"supportsHttpsTrafficOnly": true,
"defaultToOAuthAuthentication": true
}
},
{
"type": "Microsoft.Web/serverfarms",
"apiVersion": "2021-03-01",
"name": "[variables('hostingPlanName')]",
"location": "[parameters('location')]",
"sku": {
"name": "Y1",
"tier": "Dynamic"
},
"properties": {}
},
{
"type": "Microsoft.Web/sites",
"apiVersion": "2021-03-01",
"name": "[variables('functionAppName')]",
"location": "[parameters('location')]",
"kind": "functionapp",
"identity": {
"type": "SystemAssigned"
},
"properties": {
"serverFarmId": "[resourceId('Microsoft.Web/serverfarms', variables('hostingPlanName'))]",
"siteConfig": {
"appSettings": [
{
"name": "AzureWebJobsStorage",
"value": "[format('DefaultEndpointsProtocol=https;AccountName={0};EndpointSuffix={1};AccountKey={2}', variables('storageAccountName'), environment().suffixes.storage, listKeys(resourceId('Microsoft.Storage/storageAccounts', variables('storageAccountName')), '2022-05-01').keys[0].value)]"
},
{
"name": "WEBSITE_CONTENTAZUREFILECONNECTIONSTRING",
"value": "[format('DefaultEndpointsProtocol=https;AccountName={0};EndpointSuffix={1};AccountKey={2}', variables('storageAccountName'), environment().suffixes.storage, listKeys(resourceId('Microsoft.Storage/storageAccounts', variables('storageAccountName')), '2022-05-01').keys[0].value)]"
},
{
"name": "WEBSITE_CONTENTSHARE",
"value": "[toLower(variables('functionAppName'))]"
},
{
"name": "FUNCTIONS_EXTENSION_VERSION",
"value": "~4"
},
{
"name": "WEBSITE_NODE_DEFAULT_VERSION",
"value": "~14"
},
{
"name": "APPINSIGHTS_INSTRUMENTATIONKEY",
"value": "[reference(resourceId('Microsoft.Insights/components', variables('applicationInsightsName')), '2020-02-02').InstrumentationKey]"
},
{
"name": "FUNCTIONS_WORKER_RUNTIME",
"value": "[variables('functionWorkerRuntime')]"
}
],
"ftpsState": "FtpsOnly",
"minTlsVersion": "1.2"
},
"httpsOnly": true
},
"dependsOn": [
"[resourceId('Microsoft.Insights/components', variables('applicationInsightsName'))]",
"[resourceId('Microsoft.Web/serverfarms', variables('hostingPlanName'))]",
"[resourceId('Microsoft.Storage/storageAccounts', variables('storageAccountName'))]"
]
},
{
"type": "Microsoft.Insights/components",
"apiVersion": "2020-02-02",
"name": "[variables('applicationInsightsName')]",
"location": "[parameters('appInsightsLocation')]",
"kind": "web",
"properties": {
"Application_Type": "web",
"Request_Source": "rest"
}
}
]
}
The following four Azure resources are created by this template:
- Microsoft.Storage/storageAccounts: create an Azure Storage account, which is required by Functions.
- Microsoft.Web/serverfarms: create a serverless Consumption hosting plan for the function app.
- Microsoft.Web/sites: create a function app.
- microsoft.insights/components: create an Application Insights instance for monitoring.
Important
The storage account is used to store important app data, sometimes including the application code itself. You should limit access from other apps and users to the storage account.
Deploy the template
The following scripts are designed for and tested in Azure Cloud Shell. Choose Try It to open a Cloud Shell instance right in your browser.
read -p "Enter a resource group name that is used for generating resource names:" resourceGroupName &&
read -p "Enter the location (like 'eastus' or 'northeurope'):" location &&
templateUri="https://raw.githubusercontent.com/Azure/azure-quickstart-templates/master/quickstarts/microsoft.web/function-app-create-dynamic/azuredeploy.json" &&
az group create --name $resourceGroupName --location "$location" &&
az deployment group create --resource-group $resourceGroupName --template-uri $templateUri &&
echo "Press [ENTER] to continue ..." &&
read
Visit function app welcome page
Use the output from the previous validation step to retrieve the unique name created for your function app.
Open a browser and enter the following URL: <https://<appName.azurewebsites.net>. Make sure to replace <\appName> with the unique name created for your function app.
When you visit the URL, you should see a page like this:
Clean up resources
If you continue to the next step and add an Azure Storage queue output binding, keep all your resources in place as you'll build on what you've already done.
Otherwise, use the following command to delete the resource group and all its contained resources to avoid incurring further costs.
az group delete --name <RESOURCE_GROUP_NAME>
Replace <RESOURCE_GROUP_NAME> with the name of your resource group.
Next steps
Now that you've created your function app resources in Azure, you can deploy your code to the existing app by using one of the following tools: