Gatus

Gatus is a lightweight, self-hosted service for monitoring the availability and correctness of HTTP and other endpoints. It runs scheduled health checks defined in a simple configuration file, evaluates conditions (status code, latency, and response content), and exposes a web UI that acts as both a dashboard and status page.

Key Features

• Health checks for endpoints with configurable intervals, timeouts, and retry behavior
• Condition-based validation (e.g., status code, response time, headers/body content via pattern matching)
• Built-in dashboard/status page UI for quick visibility into current state and history
• Alerting integrations (e.g., Slack/Discord/Teams-style webhooks, email, and other providers depending on configuration)
• Grouping and organization of checks (useful for multi-service or multi-environment setups)
• Designed to be easy to run in containers and integrate into DevOps workflows

Use Cases

• Monitor internal and public HTTP services/APIs and get notified on failures
• Validate “healthy” responses beyond uptime (e.g., specific JSON fields, keywords, or latency thresholds)
• Publish a simple status page for homelab/services without external SaaS monitoring

Limitations and Considerations

• Primarily configuration-file driven; advanced UI-based management/workflows are limited compared to SaaS platforms
• Feature set focuses on endpoint checks; it is not a full APM/distributed tracing solution

Gatus is a practical option when you want straightforward uptime and response validation checks, quick deployment, and flexible alerting without relying on external monitoring services. Its emphasis on simple configuration and a built-in status UI makes it suitable for homelabs and small-to-medium service fleets.