Healthchecks

Healthchecks is an open-source monitoring service for cron jobs and scheduled tasks. It listens for HTTP requests and email “pings” from jobs and notifies you when expected pings are late or missing, providing a web dashboard and API for management.

Key Features

• Receives pings over HTTP and email and evaluates job status using configurable Period and Grace Time parameters.
• Supports cron expressions for schedule definitions and uses a cron-evaluation library for schedule parsing.
• Live-updating web dashboard with check list, per-check event log, notes and status badges for embedding on external pages.
• 25+ notification integrations (webhooks, chat, incident management, SMS/phone options) and a flexible notifications pipeline.
• Team and project management features, monthly reports, read-only API keys and WebAuthn 2FA support.
• Official Dockerfile and pre-built images; ships with uWSGI for serving the app and optional background workers for alerts/reports.
• Works with PostgreSQL, MySQL or MariaDB as production databases; development defaults to a local SQLite file.

Use Cases

• Monitor cron jobs, scheduled tasks and CI jobs to detect silent failures (backups, report generation, data syncs).
• Lightweight server/process heartbeats (container or process checks, resource checks) by pinging from scripts.
• Incident alerting for operational tasks such as SSL renewals, backups, database replication or IoT device health.

Limitations and Considerations

• Docker images do not perform TLS termination; a reverse proxy or load balancer should handle TLS in production.
• Some notification channels require external services or extra configuration (SMS, phone calls, third‑party APIs).
• For high scale or production resilience, choose PostgreSQL/MySQL/MariaDB and ensure monitoring and backups for the Healthchecks instance itself.

Healthchecks provides a focused, low-friction way to detect and alert on missed scheduled work, with a compact feature set optimized for cron-like monitoring and integrations.