{"id":8462,"date":"2025-03-13T18:29:44","date_gmt":"2025-03-13T12:59:44","guid":{"rendered":"https:\/\/innovationm.co\/?p=8462"},"modified":"2025-03-13T18:29:44","modified_gmt":"2025-03-13T12:59:44","slug":"building-a-robust-website-monitoring-system-with-python-real-time-uptime-and-ssl-expiry-alerts","status":"publish","type":"post","link":"https:\/\/www.innovationm.com\/blog\/building-a-robust-website-monitoring-system-with-python-real-time-uptime-and-ssl-expiry-alerts\/","title":{"rendered":"Building a Robust Website Monitoring System with Python: Real-Time Uptime and SSL Expiry Alerts"},"content":{"rendered":"<p>Ensuring your website remains online and secure is crucial for business operations and user experience. In this post, we\u2019ll walk through building a Python-based website monitoring system that continuously checks site availability, handles API authentication, and sends real-time notifications via webhooks.<\/p>\n<p>This system will help you:<br \/>\n\u25cf Monitor website uptime<br \/>\n\u25cf Check SSL certificate expiration<br \/>\n\u25cf Send instant alerts via webhook<br \/>\n\u25cf Log errors for debugging<br \/>\nLet\u2019s dive into building this monitoring system step by step.<\/p>\n<p><strong>1. Setting Up the Monitoring System<\/strong><br \/>\nWe\u2019ll use Python\u2019s built-in libraries like requests, socket, and ssl along with yaml for<br \/>\nconfiguration.<\/p>\n<p><strong>Installing Dependencies<\/strong><br \/>\nEnsure you have the required dependencies installed:<\/p>\n<pre>pip install requests pyyaml<\/pre>\n<p><strong>Configuring the Monitor<\/strong><\/p>\n<p>Create a YAML configuration file (config.yml) to store the website URLs and webhook<br \/>\nsettings.<\/p>\n<p><strong>websites:<\/strong><br \/>\n&#8211; url: &#8220;https:\/\/example.com&#8221;<br \/>\nretries: 3<\/p>\n<p>timeout: 5<br \/>\n&#8211; url: &#8220;https:\/\/api.example.com&#8221;<br \/>\nretries: 2<br \/>\ntimeout: 5<br \/>\nwebhook:<br \/>\nurl: &#8220;https:\/\/your-webhook-url.com&#8221;<br \/>\nssl_check:<br \/>\nenabled: true<br \/>\nalert_days: 7<\/p>\n<p>This allows easy modification of monitoring parameters.<\/p>\n<p><strong>2. Writing the Website Monitoring Script<br \/>\n<\/strong><br \/>\nThe script will:<br \/>\n\u2705 Ping the websites at regular intervals<br \/>\n\u2705 Retry failed requests<br \/>\n\u2705 Log errors<br \/>\nand send alerts via webhook<\/p>\n<p><strong>Checking Website Uptime<\/strong><br \/>\nWe use requests to check website availability.<\/p>\n<p>import requests<\/p>\n<pre>import yaml\r\nimport time\r\ndef load_config():\r\nwith open(\"config.yml\", \"r\") as file:\r\nreturn yaml.safe_load(file)\r\ndef check_website(url, retries, timeout):\r\nfor _ in range(retries):\r\ntry:\r\nresponse = requests.get(url, timeout=timeout)\r\nif response.status_code == 200:\r\nprint(f\"\u2705 {url} is UP\")\r\nreturn True\r\nelse:\r\nprint(f\"\u26a0\ufe0f {url} returned status {response.status_code}\")\r\nexcept requests.exceptions.RequestException as e:\r\n\r\nprint(f\"\u274c Error connecting to {url}: {e}\")\r\ntime.sleep(1)\r\nreturn False\r\ndef monitor_websites(config):\r\nfor site in config[\"websites\"]:\r\ncheck_website(site[\"url\"], site[\"retries\"], site[\"timeout\"])\r\nconfig = load_config()\r\nmonitor_websites(config)<\/pre>\n<p>This script loads the configuration and checks each website\u2019s status, logging any failures.<\/p>\n<p><strong>3. Checking SSL Certificate Expiry<br \/>\n<\/strong><br \/>\nSSL certificates expire and need renewal. Let\u2019s add a check to notify us before expiration.<br \/>\nimport ssl<br \/>\nimport socket<br \/>\nfrom datetime import datetime<\/p>\n<pre>def get_ssl_expiry_date(hostname):\r\ncontext = ssl.create_default_context()\r\nwith socket.create_connection((hostname, 443)) as sock:\r\nwith context.wrap_socket(sock, server_hostname=hostname) as ssock:\r\ncert = ssock.getpeercert()\r\nexpiry_date = datetime.strptime(cert['notAfter'], \"%b %d %H:%M:%S %Y GMT\")\r\nreturn expiry_date\r\ndef check_ssl_certificates(config):\r\nif not config.get(\"ssl_check\", {}).get(\"enabled\", False):\r\nreturn\r\nalert_days = config[\"ssl_check\"].get(\"alert_days\", 7)\r\nfor site in config[\"websites\"]:\r\nhostname = site[\"url\"].replace(\"https:\/\/\", \"\").replace(\"http:\/\/\", \"\").split(\"\/\")[0]\r\ntry:\r\nexpiry_date = get_ssl_expiry_date(hostname)\r\ndays_left = (expiry_date - datetime.utcnow()).days\r\nprint(f\" {hostname} SSL expires in {days_left} days\")\r\nif days_left &lt;= alert_days:\r\nsend_webhook_alert(f\"\u26a0\ufe0f SSL for {hostname} expires in {days_left} days!\")\r\nexcept Exception as e:\r\nprint(f\"\u274c Failed to check SSL for {hostname}: {e}\")<\/pre>\n<p>This function extracts the SSL certificate expiration date and checks if it\u2019s close to expiring.<\/p>\n<p><strong>4. Sending Alerts via Webhook<br \/>\n<\/strong><br \/>\nIf a website is down or an SSL certificate is expiring soon, we send a webhook alert.<\/p>\n<pre>def send_webhook_alert(message):\r\nwebhook_url = config[\"webhook\"][\"url\"]\r\npayload = {\"text\": message}\r\ntry:\r\nrequests.post(webhook_url, json=payload)\r\nprint(\"\u2705 Webhook alert sent\")\r\nexcept requests.exceptions.RequestException as e:\r\nprint(f\"\u274c Failed to send webhook alert: {e}\")<\/pre>\n<p><strong>5. Automating the Monitoring Process<\/strong><br \/>\nWe wrap everything in a continuous monitoring loop.<\/p>\n<pre>\r\ndef run_monitoring():\r\nconfig = load_config()\r\nwhile True:\r\nprint(\" Running website and SSL checks...\")\r\nmonitor_websites(config)\r\ncheck_ssl_certificates(config)\r\ntime.sleep(60) # Run every 60 seconds\r\nif __name__ == \"__main__\":\r\nrun_monitoring()<\/pre>\n<p>This script will run indefinitely, checking websites and SSL certificates every 60 seconds.<\/p>\n<p><strong>Conclusion<\/strong><br \/>\nWith this Python-based monitoring system, you can:<br \/>\n\u2705 Track website uptime and performance<br \/>\n\u2705 Get notified if SSL certificates are expiring<br \/>\n\u2705 Send real-time webhook alerts for downtime<\/p>\n<p>This solution is easy to extend\u2014consider adding database logging or integrating with services<br \/>\nlike Slack or Telegram for alerts.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ensuring your website remains online and secure is crucial for business operations and user experience. In this post, we\u2019ll walk through building a Python-based website monitoring system that continuously checks site availability, handles API authentication, and sends real-time notifications via webhooks. This system will help you: \u25cf Monitor website uptime \u25cf Check SSL certificate expiration [&hellip;]<\/p>\n","protected":false},"author":277,"featured_media":8463,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1327,1325,1328,1034,1326],"tags":[1342,1338,1329,1341,1334,1339,1331,1340,1335,1332,344,1333,1330,1336,1337],"class_list":["post-8462","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-automation","category-python-development","category-system-monitoring","category-test-automation","category-website-monitoring","tag-devops-tools","tag-python-automation","tag-python-development","tag-python-scripting","tag-python-tutorial","tag-real-time-alerts","tag-ssl-certificate-monitoring","tag-system-monitoring","tag-tech-tutorial","tag-uptime-tracking","tag-web-development","tag-webhook-integration","tag-website-monitoring","tag-website-reliability","tag-website-security"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Building a Robust Website Monitoring System with Python: Real-Time Uptime and SSL Expiry Alerts - InnovationM - Blog<\/title>\n<meta name=\"description\" content=\"Learn how to build a comprehensive website monitoring system with Python that tracks uptime, checks SSL certificate expiration, and sends real-time alerts via webhooks. 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