Self-hosted cron job monitoring with zero dependencies — node server.js and done

Description and use

Self-hosted cron job monitoring with zero dependencies: a Node.js server pings, detects missed or late jobs, and sends email alerts or webhooks.

Problem

Cron jobs fail silently, leading to delayed damage detection.

Outcome

The self-hosted monitor provides real-time detection of missed or late cron jobs, eliminating silent failures and reducing damage time.

Workflow

• Install Node.js on the server.
• Download the Cron Heartbeat Monitor package.
• Run the monitor with node server.js.
• Configure cron jobs to ping the monitor’s heartbeat endpoint.
• Set grace periods for missed or late detection.
• Enable SMTP email alerts or webhooks for notifications.
• Use the REST API or web dashboard to view job status.
• Adjust settings as needed for new jobs.
• Monitor alerts and take corrective action promptly.

Evidence

Cron Heartbeat Monitor is a self-hosted monitoring server for cron jobs and scheduled tasks.

Source

Zero dependencies — Node.js only, no database, no Python

Source