Self-hosted uptime monitoring with incident management and status pages.

Run · Features · Docs · Showcase

Features

• HTTP, TCP, and push-based monitors
• Incidents with auto-open on failure, auto-resolve, and configurable reopen behaviour
• Status pages with components, custom domains, password protection, and embeddable widgets
• Scheduled maintenance windows that suppress alerts and show on the status page
• Notifications via webhook, email, Slack, and Discord
• 30-day history grid and 90-day component history on the public page
• Single Go binary, single SQLite database, no external services required

Run

docker run -d \
  --name cairn \
  -p 8080:8080 \
  -v cairn-data:/data \
  -e CAIRN_ENCRYPTION_KEY="$(openssl rand -base64 32)" \
  ghcr.io/trc-loop/cairn:latest

Then open http://localhost:8080 and finish setup.

A docker-compose.yml is included for a more complete setup.

Built with

Links

• Docs: https://cairn.arne.sh
• Showcase: https://status.arne.sh
• Contributing
• License (AGPL-3.0-or-later)
• Releases