Automated Health Check for URLs

Name: Automated Health Check for URLs
Rating: 5 (5 reviews)
Author: Free N8N

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Monitoringgoogle sheetshealth checkmonitoringtelegramurl

This workflow periodically checks the availability of a list of URLs from a Google Sheet and sends alerts via Telegram if issues are detected.

About This Workflow

This n8n workflow, named 'MAIA - Health Check', is designed to automate the process of monitoring the health of a list of URLs. It is triggered on a schedule, fetches URLs from a specified Google Sheet, and performs an HTTP request to each URL. If a URL is unresponsive or returns an error, an alert is sent to a Telegram chat. The workflow includes helpful sticky notes for initial setup guidance.

Key Features

Scheduled Execution: Runs at a configurable interval (currently set to every minute).
Google Sheets Integration: Reads a list of URLs to check from a designated Google Sheet.
HTTP Request: Performs a GET request to each URL to verify its availability.
Error Handling: Catches errors from HTTP requests and continues processing.
Telegram Notifications: Sends alert messages to a specified Telegram chat ID upon detection of issues.
Informative Sticky Notes: Provides setup instructions for the Google Sheet and Telegram integration.

How To Use

Google Sheet Setup:
- Create a new Google Sheet.
- In cell A1, add a title (e.g., 'URL to Check').
- Starting from cell A2, list all the URLs you want to monitor, one per row.
- Share the Google Sheet with the n8n Google Sheets service account credentials.
- In the FetchUrls node (ID: a53fba9c-0f7e-4757-8bcd-e3622845e804), configure the documentId and sheetName to point to your created Google Sheet.
Telegram Setup:
- Ensure you have a Telegram bot and its API token.
- In the Telegram node (ID: ea7771ba-3d35-423a-9813-2a65448a15fc), configure the chatId to the ID of the chat where you want to receive notifications.
- Set up Telegram credentials in n8n if not already done.
Workflow Configuration:
- The Schedule Trigger node (ID: bae03dc7-e35b-4760-8de8-151d2d97391b) is set to run every minute. Adjust this interval as needed.
- The Check URL node (ID: c96a2070-953b-4a03-a308-dae92d841851) uses the {{ $json.URLS }} expression to get URLs from the FetchUrls node. If your Google Sheet column has a different header, update this expression accordingly.
- The onError property of the Check URL node is set to continueErrorOutput, meaning that if a URL check fails, the workflow will still attempt to send a Telegram message.
- The Telegram node's text parameter constructs the message. It includes {{ $json.URLS }} and {{ $json.error.code }} which might require adjustment based on the actual error output from the httpRequest node when an error occurs. You may want to inspect the output of the Check URL node to refine the Telegram message content for better error reporting.

Apps Used

google sheets

health check

monitoring

url

Workflow JSON

{
  "id": "6af6780b-1f90-4edc-8396-7de4f2317394",
  "name": "Automated Health Check for URLs",
  "nodes": 25,
  "category": "Monitoring",
  "status": "active",
  "version": "1.0.0"
}

Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.