Monitor if a page is alive and notify via Twilio SMS if not

Description

Workflow Purpose

This workflow periodically checks a service's availability and sends an SMS notification if the service is down.

High-Level Steps

Schedule Trigger: The workflow is triggered at a specified interval, such as every minute.
HTTP Request: An HTTP request is sent to the URL of the service being monitored.
If: The HTTP status code of the response is checked.
If the status code is 200 (OK), the workflow ends.
If the status code is not 200, indicating a potential issue, an SMS notification is sent using Twilio.

Setup
Setting up this workflow is relatively straightforward and should only take a few minutes:

Create a new n8n workflow.
Add the nodes: Schedule Trigger, HTTP Request, If, and Twilio.
Configure the nodes:
Schedule Trigger: Specify the desired interval.
HTTP Request: Enter the URL of the service to be monitored.
If: Set the condition to check for a status code other than 200.
Twilio: Enter the Twilio account credentials and the phone numbers for sending and receiving the SMS notification.
Connect the nodes: Connect the nodes as shown in the workflow diagram.
Activate the workflow: Save the workflow and activate it.

Additional Notes

The workflow can be customized by changing the interval, the URL, the Twilio credentials, and the SMS message.
This workflow is a simple example, and more complex workflows can be created to meet specific needs.