{ "id": "NTSkPEG2pcvG3qoH", "meta": { "templateCredsSetupCompleted": true }, "name": "SSL Expiry Notifier", "tags": [ { "id": "b2GfRjIENZV9WKpD", "name": "IT Ops", "createdAt": "2025-05-29T08:33:47.664Z", "updatedAt": "2025-05-29T08:33:47.664Z" }, { "id": "sfoRiNMRAXjQ31IO", "name": "DevOps", "createdAt": "2025-05-29T08:33:47.654Z", "updatedAt": "2025-05-29T08:33:47.654Z" } ], "nodes": [ { "id": "b8c160c6-29a3-4b7d-ab78-e126206627b1", "name": "URLs to Monitor", "type": "n8n-nodes-base.googleSheets", "position": [ 60, 140 ], "parameters": { "columns": { "value": { "URL": "={{ $json.result.host }}", "Days Left": "={{ $json.result.days_left }}", "Valid From": "={{ $json.result.valid_from }}", "Valid Till": "={{ $json.result.valid_till }}" }, "schema": [ { "id": "URL", "type": "string", "display": true, "removed": false, "required": false, "displayName": "URL", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Valid From", "type": "string", "display": true, "required": false, "displayName": "Valid From", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Valid Till", "type": "string", "display": true, "required": false, "displayName": "Valid Till", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Days Left", "type": "string", "display": true, "required": false, "displayName": "Days Left", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "row_number", "type": "string", "display": true, "removed": true, "readOnly": true, "required": false, "displayName": "row_number", "defaultMatch": false, "canBeUsedToMatch": true } ], "mappingMode": "defineBelow", "matchingColumns": [ "URL" ], "attemptToConvertTypes": false, "convertFieldsToString": false }, "options": {}, "operation": "update", "sheetName": { "__rl": true, "mode": "url", "value": "https://docs.google.com/spreadsheets/d/1TakDfkHpgB8qQcvy98mgUfEsEZGnIVNlkwqnsWhGDwI/edit?gid=0#gid=0", "__regex": "https:\\/\\/docs\\.google\\.com\\/spreadsheets\\/d\\/[0-9a-zA-Z\\-_]+.*\\#gid=([0-9]+)" }, "documentId": { "__rl": true, "mode": "url", "value": "https://docs.google.com/spreadsheets/d/1TakDfkHpgB8qQcvy98mgUfEsEZGnIVNlkwqnsWhGDwI/edit?gid=0#gid=0" } }, "credentials": { "googleSheetsOAuth2Api": { "name": "" } }, "typeVersion": 4.5, "alwaysOutputData": true }, { "id": "21c4d282-5bb4-4d34-8cad-28e4e91843be", "name": "Fetch URLs", "type": "n8n-nodes-base.googleSheets", "position": [ -640, 400 ], "parameters": { "options": {}, "sheetName": { "__rl": true, "mode": "url", "value": "https://docs.google.com/spreadsheets/d/1TakDfkHpgB8qQcvy98mgUfEsEZGnIVNlkwqnsWhGDwI/edit?gid=0#gid=0" }, "documentId": { "__rl": true, "mode": "url", "value": "https://docs.google.com/spreadsheets/d/1TakDfkHpgB8qQcvy98mgUfEsEZGnIVNlkwqnsWhGDwI/edit?gid=0#gid=0" } }, "credentials": { "googleSheetsOAuth2Api": { "name": "" } }, "typeVersion": 4.5 }, { "id": "3d6ebf5c-a89d-4890-ab64-01c6db1d8486", "name": "Check SSL", "type": "n8n-nodes-base.httpRequest", "position": [ -380, 400 ], "parameters": { "url": "=https://ssl-checker.io/api/v1/check/{{ $json[\"URL\"].replace(/^https?:\\/\\//, \"\").replace(/\\/$/, \"\") }}", "options": {} }, "typeVersion": 4.2 }, { "id": "1b7427f1-41aa-4aea-8a98-dccb44e958e0", "name": "Expiry Alert", "type": "n8n-nodes-base.if", "position": [ 60, 620 ], "parameters": { "options": {}, "conditions": { "options": { "version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "ee6e2ce8-569a-4f1f-91b5-2c55f605a16b", "operator": { "type": "number", "operation": "lte" }, "leftValue": "={{ $json.result.days_left }}", "rightValue": 7 } ] } }, "typeVersion": 2.2 }, { "id": "8efd16a5-ff9e-4138-aa70-ebd087fb27ef", "name": "Send Email", "type": "n8n-nodes-base.emailSend", "position": [ 360, 400 ], "parameters": { "html": "=\n\n\n \n \n \n\n\n
\n
\n

SSL Certificate Expiry Notice

\n
\n
\n

Dear Team,

\n

The SSL certificate for the website {{ $json.result.host }} is set to expire in {{ $json.result.days_left }} days.

\n

Please take the necessary actions to renew the certificate and ensure uninterrupted service.

\n
\n
\n

Best regards,
The IT Operations Team

\n
\n
\n\n\n", "options": {}, "subject": "=SSL Expiry - {{ $json.result.days_left }} Days Left - {{ $json.result.host }}", "toEmail": "=team1@gmail.com,team2@gmail.com", "fromEmail": "user@example.com" }, "credentials": { "smtp": { "name": "" } }, "typeVersion": 2.1 }, { "id": "7ce561b1-1102-4fc1-972b-7dca1793e023", "name": "Daily Trigger", "type": "n8n-nodes-base.scheduleTrigger", "position": [ -900, 400 ], "parameters": { "rule": { "interval": [ { "triggerAtHour": 8 } ] } }, "typeVersion": 1.2 }, { "id": "12d2c49f-9d56-4ace-bc06-82ea850df133", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [ -1620, -380 ], "parameters": { "width": 500, "height": 1240, "content": "## \ud83d\udd10 SSL Expiry Notifier (No Paid APIs)\n\n### \ud83d\udc64 Who is this for?\nThis workflow is designed for IT admins, DevOps engineers, and web professionals who need to **monitor SSL certificate expirations** across multiple domains \u2014 **without relying on paid APIs**.\n\n---\n\n### \ud83e\udde9 What It Does\n1. **Daily Trigger** runs the workflow every morning.\n2. **Google Sheets Integration** fetches the list of website URLs to monitor.\n3. **Free SSL API Check** (`ssl-checker.io`) is used to retrieve certificate validity data.\n4. **Certificate Details** (valid from, valid till, days left) are updated back into the same Google Sheet.\n5. **If Condition** checks if the SSL certificate expires in \u22647 days.\n6. **Email Alert** is sent automatically for soon-to-expire certificates.\n\n---\n\n### \u2699\ufe0f Setup Instructions\n1. **Google Sheets**: \n - Clone the sample sheet or use your own. \n - Update the Sheet URL in the `Fetch URLs` and `Update Sheet` nodes. \n - Ensure it contains a `URL` column.\n\n2. **Credentials**: \n - Connect your **Google account** (for Sheets) and **SMTP credentials** (for email notifications).\n\n3. **Customize**: \n - Change the alert threshold in the **IF node** (currently set to 7 days). \n - Modify recipient list and message style in the **Send Email** node.\n\n---\n\n### \ud83e\udde0 Notes\n- Uses **ssl-checker.io**, a **free public API** \u2014 no paid services needed. \n- Flexible and self-hosted monitoring solution. \n- Ideal for small teams managing multiple domains.\n" }, "typeVersion": 1 }, { "id": "68db9999-8a66-479f-8708-c2b9b6556a76", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [ -1000, 220 ], "parameters": { "height": 320, "content": "### \ud83d\udd52 Daily Trigger\nRuns the workflow every day at 8:00 AM. \nAdjust the time or frequency as needed using cron or interval settings.\n" }, "typeVersion": 1 }, { "id": "b39cd547-196f-48ea-b7b5-8b09561032ce", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [ -700, 220 ], "parameters": { "height": 320, "content": "### \ud83d\udcc4 Fetch URLs\nReads website URLs from a Google Sheet. \nMake sure the sheet has a column named `URL` containing the domains you want to monitor.\n" }, "typeVersion": 1 }, { "id": "455e64c4-38da-4965-bfd6-b11a699243b1", "name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [ -420, 220 ], "parameters": { "height": 320, "content": "### \ud83d\udd0d Check SSL\nQueries `ssl-checker.io` (free API) for SSL certificate data of each domain. \nReturns valid_from, valid_till, days_left, and host info.\n" }, "typeVersion": 1 }, { "id": "51b3423d-ea6e-4878-9d2e-177e04222100", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [ 0, 460 ], "parameters": { "height": 300, "content": "### \u26a0\ufe0f Expiry Alert\nChecks if `days_left` is less than or equal to 7. \nOnly domains that meet this condition will trigger an email alert.\n" }, "typeVersion": 1 }, { "id": "17cfd4d8-cbfe-46f0-bdf1-3a89f557200b", "name": "Sticky Note5", "type": "n8n-nodes-base.stickyNote", "position": [ 300, 220 ], "parameters": { "height": 320, "content": "### \ud83d\udce7 Send Email\nSends an email to the specified recipients if a certificate is expiring soon. \nThe message includes days left and the domain name in an HTML template.\n" }, "typeVersion": 1 }, { "id": "64c0883c-223f-4276-886b-d9996aa099dd", "name": "Sticky Note6", "type": "n8n-nodes-base.stickyNote", "position": [ 0, -60 ], "parameters": { "height": 400, "content": "### \ud83d\udd04 Update Sheet\nUpdates the original Google Sheet with new certificate data:\n- Valid From\n- Valid Till\n- Days Left \nMatches by URL to ensure correct row is updated.\n" }, "typeVersion": 1 } ], "active": true, "settings": { "executionOrder": "v1" }, "versionId": "f02670ca-1476-4eb6-acac-205630fa2b1c", "connections": { "Check SSL": { "main": [ [ { "node": "URLs to Monitor", "type": "main", "index": 0 }, { "node": "Expiry Alert", "type": "main", "index": 0 } ] ] }, "Fetch URLs": { "main": [ [ { "node": "Check SSL", "type": "main", "index": 0 } ] ] }, "Send Email": { "main": [ [] ] }, "Expiry Alert": { "main": [ [ { "node": "Send Email", "type": "main", "index": 0 } ] ] }, "Daily Trigger": { "main": [ [ { "node": "Fetch URLs", "type": "main", "index": 0 } ] ] } } }