LoggiFly

LoggiFly is a lightweight log-monitoring service that watches container logs for predefined keywords or regular expressions and sends notifications when matches occur. It is designed for fast, targeted alerting on errors, security events, or application-specific log patterns across local and remote container hosts.

Key Features

• Plain text, regex, and multi-line log pattern detection
• Notifications via ntfy or Apprise (supports many notification providers) and optional custom endpoints
• Optional log attachments included with alerts for context
• Trigger container stop or restart on matched patterns to mitigate crash loops or critical errors
• Configuration via YAML, environment variables, or Docker container labels
• Automatic reload when configuration changes are detected
• Support for multiple remote hosts and compatible with Docker, Docker Swarm, and Podman

Use Cases

• Alert on suspicious activity such as repeated failed login attempts in service logs
• Notify on application crashes or critical exceptions with attached log context
• Automatically restart or stop a container when a known fatal error pattern appears

LoggiFly fits well in homelabs and production-like setups where simple, actionable log-based alerting is needed without running a full observability stack. It focuses on flexible matching, straightforward configuration, and reliable notifications.