Workflow overview
Why this workflow matters
Potentially useful as a reusable automation building block.
This AlekSystem workflow illustrates how to monitor and track SSL certificate expiration dates for any domain using the SSL Checker node from customJS. It automatically updates a Google Sheet with the number of days left until expiry and sends a Slack notification when certificates are about to expire. What this workflow does Input** a list of domains from Google Sheets. Check** each domain’s SSL certificate details, including expiration date and days left. Update** the Google Sheet with the latest SSL expiry information. Notify** via Slack if any certificate is expiring soon (e.g., less than 8 days). Requirements CustomJS API key** for SSL checking. Google Sheets API credentials** for reading/updating domain data. Slack API credentials** (optional, for notifications). Workflow Steps Schedule Trigger ⏰ Starts the workflow automatically (weekly by default, configurable). Google Sheets (Read Rows) 📄 Retrieves the list of domains from your Google Sheet. CustomJS - Check SSL 🔐 Fetches SSL certificate details for each domain. Returns JSON output with fields such as expires and daysLeft. Google Sheets (Update Rows) 📝 Updates the sheet with the current number of days left until certificate expiry. Check Days Left Threshold (formerly "If" node) ⚠️ Evaluates whether the certificate expires within the threshold (e.g., < 8 days). Slack Node 💬 Sends a notification message if a certificate is close to expiration. Example Slack alert message: ⏰ Reminder: SSL certificate of www.example.com will expire in 7 days. SSL Checker node JSON output { "output": { "domain": "example.com", "valid": true, "expires": "2025-12-31T23:59:59.000Z", "issuer": "Let's Encrypt", "daysLeft": 5 } }
Best fit
Categories
Services
Use cases
Need another direction?