Munin is a networked resource monitoring tool that helps analyze resource trends and identify performance issues. It uses a master/node architecture where the master polls nodes for data and generates beautiful RRD graphs. The name “Munin” comes from Norse mythology—Munin was one of Odin’s two ravens, representing “memory.”
- Current stable: 2.0.75 (October 2024)
- Pre-release: 2.999.17 (January 2026)
- Master-node architecture: Centralized monitoring with distributed data collection
- RRDtool-based graphing: Beautiful time-series graphs with minimal configuration
- Plugin system: 300+ built-in plugins for common services
- Low overhead: Minimal resource usage on monitored hosts
- Trend analysis: Long-term metric storage for capacity planning
- Web interface: Easy-to-read graphs and status overview
- Long-term trend analysis and capacity planning
- Simple, plug-and-play monitoring deployments
- Environments preferring RRD-based storage
- Teams wanting beautiful default graphs
- Server resource monitoring (CPU, memory, disk, network)
- Service performance tracking
- Network bandwidth monitoring
- Application metrics collection
- Historical trend analysis
- Primary: Perl (65.6%)
- Shell scripts: (20.7%)
- JavaScript: (3.3%)
- Open-source and self-hosted
- Community-maintained project
- Maintenance mode development
¶ History and References
Any questions?
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