Merge pull request #233135 from gasridha/gasridha-Func-networking

Update Function specific content in this doc

Author: JamesJBarnett

articles/app-service/app-service-undelete.md

@@ -3,7 +3,7 @@ title: Restore deleted apps
 description: Learn how to restore a deleted app in Azure App Service. Avoid the headache of an accidentally deleted app.
 author: seligj95
 ms.author: jordanselig
-ms.date: 11/4/2022
+ms.date: 4/3/2023
 ms.topic: article 
 ms.custom: devx-track-azurepowershell
 ---
@@ -14,8 +14,8 @@ If you happened to accidentally delete your app in Azure App Service, you can re
 
 > [!NOTE]
 > - Deleted apps are purged from the system 30 days after the initial deletion. After an app is purged, it can't be recovered.
-> - Undelete functionality isn't supported for the Consumption plan.
-> - Apps Service apps running in an App Service Environment don't support snapshots. Therefore, undelete functionality and clone functionality aren't supported for App Service apps running in an App Service Environment.
+> - Undelete functionality isn't supported for function apps hosted on the Consumption plan or Elastic Premium plan.
+> - App Service apps running in an App Service Environment don't support snapshots. Therefore, undelete functionality and clone functionality aren't supported for App Service apps running in an App Service Environment.
 >
 
 ## Re-register App Service resource provider
@@ -49,12 +49,12 @@ The detailed information includes:
 ## Restore deleted app
 
 >[!NOTE]
->- `Restore-AzDeletedWebApp` isn't supported for function apps.
+>- `Restore-AzDeletedWebApp` isn't supported for function apps hosted on the Consumption plan or Elastic Premium plan.
 >- The Restore-AzDeletedWebApp cmdlet restores a deleted web app. The web app specified by TargetResourceGroupName, TargetName, and TargetSlot will be overwritten with the contents and settings of the deleted web app. If the target parameters are not specified, they will automatically be filled with the deleted web app's resource group, name, and slot. If the target web app does not exist, it will automatically be created in the app service plan specified by TargetAppServicePlanName.
 >- By default `Restore-AzDeletedWebApp` will restore both your app configuration as well any content. If you want to only restore content, you use the **`-RestoreContentOnly`** flag with this commandlet.
 
 
-Once the app you want to restore has been identified, you can restore it using `Restore-AzDeletedWebApp`, please see below examples
+After identifying the app you want to restore, you can restore it using `Restore-AzDeletedWebApp`, as shown in the following examples.
 >*You can find the full commandlet reference here: **[Restore-AzDeletedWebApp](/powershell/module/az.websites/restore-azdeletedwebapp)*** .
 
 >Restore to the original app name:
@@ -90,16 +90,43 @@ Restore-AzDeletedWebApp -ResourceGroupName <original_rg> -Name <original_app> -D
 
 The inputs for command are:
 
-- **Target Resource Group**: Target resource group where the app will be restored
+- **Target Resource Group**: Target resource group where the app is to be restored
 - **TargetName**: Target app for the deleted app to be restored to
 - **TargetAppServicePlanName**: App Service plan linked to the app
 - **Name**: Name for the app, should be globally unique.
 - **ResourceGroupName**: Original resource group for the deleted app 
 - **Slot**: Slot for the deleted app 
-- **RestoreContentOnly**: By default `Restore-AzDeletedWebApp` will restore both your app configuration as well any content. If you want to only restore content, you can use the `-RestoreContentOnly` flag with this commandlet.
+- **RestoreContentOnly**: By default `Restore-AzDeletedWebApp` restores both your app configuration as well any content. If you want to only restore content, you can use the `-RestoreContentOnly` flag with this commandlet.
 
 > [!NOTE]
 > If the app was hosted on and then deleted from an App Service Environment, it can be restored only if the corresponding App Service Environment still exists.
 
+## Restore deleted function app 
+
+If the function app was hosted on a **Dedicated app service plan**, it can be restored, as long as it was using the default App Service storage.
+
+1. Fetch the DeletedSiteId of the app version you want to restore, using Get-AzDeletedWebApp cmdlet:
+
+```powershell
+Get-AzDeletedWebApp -ResourceGroupName <RGofDeletedApp> -Name <NameofApp> 
+```
+2. Create a new function app in a Dedicated plan. Refer to the instructions for [how to create an app in the portal](../azure-functions/functions-create-function-app-portal.md#create-a-function-app).
+3. Restore to the newly created function app using this cmdlet:
+
+```powershell
+Restore-AzDeletedWebApp -ResourceGroupName <RGofnewapp> -Name <newApp> -deletedId "/subscriptions/xxxx/providers/Microsoft.Web/locations/xxxx/deletedSites/xxxx"
+```
+
+Currently there's no support for Undelete (Restore-AzDeletedWebApp) Function app that's hosted in a Consumption plan or Elastic premium plan since the content resides on Azure Files in a Storage account. If you haven't 'hard' deleted that Azure Files storage account, or if the account exists and file shares haven't been deleted, then you may use the steps as workaround:
+ 
+
+1. Create a new function app in a Consumption or Premium plan. Refer the instructions for [how to create an app in the portal](../azure-functions/functions-create-function-app-portal.md#create-a-function-app).
+2. Set the following [app settings](../azure-functions/functions-how-to-use-azure-function-app-settings.md?tabs=portal#settings) to refer to the old storage account , which contains the content from the previous app.
+
+    | App Setting      | Suggested value  | 
+    | ------------ | ---------------- | 
+    | **AzureWebJobsStorage** | Connection String for the storage account used by the deleted app. | 
+    | **WEBSITE_CONTENTAZUREFILECONNECTIONSTRING** | Connection String for the storage account used by the deleted app. | 
+    | **WEBSITE_CONTENTSHARE** | File share on storage account used by the deleted app. |