Ganglia

At a glance

• Editor score
  4.8 / 10
• Pricing
  Free plan
• Best for
  Free cluster and host metric monitoring
• Free plan
  Yes
• Paid from
  Free
• Founded
  2000
• Facts checked
  20 Sep 2026

• Where it wins

  • Federates metrics across multiple clusters and Grids
  • Supports custom metrics through gmetric and pluggable modules
  • Provides historical graphs through an RRDtool-backed web frontend

• Where it doesn't

  • Self-hosted deployment requires infrastructure management
  • Focuses on cluster metrics over network discovery and topology
  • Alerting is not a central emphasis of its verified feature set

Our verdict on Ganglia

Ganglia is a free, open-source monitoring system for high-performance computing environments, including clusters and Grids. It is designed for teams that need distributed host and cluster metrics across multiple systems. Node-level gmond daemons collect and announce metrics, while gmetad aggregates data across federated clusters. A PHP web frontend presents dashboards and historical graphs, with RRDtool providing time-series storage.

Its strongest capability is its distributed and hierarchical monitoring model. Ganglia supports federation across multiple clusters, along with multicast and unicast metric transport. This structure suits environments that need a consolidated view of separate clusters without reducing monitoring to a single host or site. Custom metrics can be added through gmetric and pluggable modules, giving technical teams a way to extend monitoring beyond the standard host metrics. The design also emphasizes low per-node overhead, which fits cluster-oriented deployments.

Ganglia uses a self-hosted deployment model and runs across web, Windows, macOS, and Linux environments. Nagios integration is available for teams that already include it in their monitoring ecosystem. The product is a better fit for cluster and host metric collection than for network discovery, topology mapping, traffic analysis, or alert-focused operations. Choose Ganglia when open-source distributed monitoring, federation, time-series graphs, and custom metrics are the priority. Teams seeking a broader network monitoring scope should consider a product centered on those network-specific functions instead.

Your product? Our editors can test Ganglia in depth and publish a review, labelled as paid · from $149/mo →

Ganglia pricing

Ganglia fact sheet

Ganglia integrations

Ganglia lists 1 integrations on its own site.

• Nagios

Alternatives to Ganglia

• ZabbixBroad infrastructure monitoring with a free self-hosted edition and paid cloud options.9.4
• CheckmkA broad hybrid monitoring platform with a capable free edition and costly paid entry.9.3
• ManageEngine OpManagerBroad monitoring, mapping, traffic analysis, automation, and distributed coverage across four editions.9.1

See all Ganglia alternatives →

Featured on iTechGuides

Ganglia is listed in our Network Monitoring directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update