Restart Azure Web App Using Azure Logic App

Step 1 : Get Access Token (HTTP)

First, we need to add the HTTP action in-order to generate and get the access token. This action is having a post method and required tenant_id, client_id, and client_secret.

"method": "POST"
"uri": "https://login.microsoftonline.com/{tenant_id}/oauth2/token"
"body": "grant_type=client_credentials&client_id={client_id} &client_secret{client_secret}&resource=https://management.core.windows.net/"
"Content-Type": "application/x-www-form-urlencoded"
}

After execution, we will get a JSON result which will have a access_token value that is required to restart the app.

JSON result looks like as below

Step 2:

Parse the JSON get the body and define the schema using The sample payload to generate the schema.

Step 3:

Restart App (HTTP)

For this HTTP request, we need a subscription ID, resource group, and app name of the azure web app. We need to pass the access_token from the previous step in the Authorization field.

"method": "POST"
"uri": "https://management.azure.com/subscriptions/{subscription_id}/resourceGroups/{resource_group}/providers/Microsoft.Web/sites/{webApp_name}/restart?api-version=2016-08-01"
"Authorization": "Bearer @{body('Parse_JSON')?['access_token']}",
"Content-Type": "application/json"
}

Run Logic App:

Your logic app is ready and now run this and see results in history.

The activity log of the web app:

Check the web App activity log. You might need to wait for 1-2 mins in order to update this.

Expected Result:

The Logic app has been configured properly and worked as expected. It is restarting the Azure web app, we can configure this on-demand and set it scheduled. For on-demand, we can use an email receiving event and restart it on receiving an email with a specific subject line. This is as given below.

Automate the Logic app on email receiving:

To make this process automated, we can configure the above logic app on receiving an email with some defined text in the subject. Now whenever you receive an email with a defined subject the logic app will run automatically.

Summary

In the above article, we see how to restart the Azure web app using the logic app. We also see the use of email receiving an event to restart the app. Apart from the restart, we can perform many more operations like stop, start, etc. For more trigger APIs to refer the below URL and configure those in the above logic app accordingly.

https://docs.microsoft.com/en-us/rest/api/appservice/webapps/stop