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intermediate

Upright

Synthetic monitoring engine with Playwright and Prometheus metrics

Updated Feb 19, 2026
Price: Free

Description

Upright is a self-hosted synthetic monitoring system. It provides a framework for running health check probes from multiple geographic sites and reporting metrics via Prometheus. Alerts can then be configured with AlertManager.

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Site overview with world map | 30-day uptime history

Probe status across all sites


Features
  • Playwright Probes - Browser-based probes for user flows with video recording and logs
  • HTTP Probes - Simple HTTP health checks with configurable expected status codes
  • SMTP Probes - EHLO handshake verification for mail servers
  • Traceroute Probes - Network path analysis with hop-by-hop latency tracking
  • Multi-Site Support - Run probes from multiple geographic locations with staggered scheduling
  • Observability - OTLP compatible, Prometheus metrics, OpenTelemetry tracing, and AlertManager support
  • Configurable Authentication - OmniAuth integration with support for any OIDC provider

Not Included
  • Notifications - Instead, Alertmanager is included for alerting and notifications
  • Hosting - Instead, you can use a VPS from DigitalOcean, Hetzner, etc.

Components
  • Rails engine
  • SQLite
  • Solid Queue for background and recurring jobs
  • Mission Control - Jobs to monitor Solid Queue and manually enqueue probes
  • Kamal for deployments
  • Prometheus metrics for uptime queries and alerting
  • AlertManager for notifications
  • Open Telemetry Collector - logs, metrics and traces can be shipped to any OTLP compatible endpoint

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