# NagiosEnterprises/nagioscore

Nagios Core

Repository: https://github.com/NagiosEnterprises/nagioscore
Canonical: https://ross.abutalabs.com/products/nagioscore
Language: C
License: GPL-2.0
License Family: copyleft
Last push: 2026-08-07T15:49:17+00:00

## Health v2 (maintenance only)
Score: 93/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 96, release rhythm 84, longevity 100
- inputs: {"age_days": 4607, "days_push": 26, "days_rel": 28, "gap_med": 64, "n_releases_24m": 10}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2040, forks 479 (observed 2026-08-28T04:06:08.458583+00:00)

## What it is
Nagios Core is a host, service, and network monitoring program written in C, with CGI-based web interface for viewing status and history. It supports plugin-based monitoring methods, host hierarchy definitions, and alert notifications via email, pager, or custom methods.

## Use cases
- monitor network services like SMTP, HTTP, and PING
- watch server resources such as CPU load and disk usage
- get alerted when hosts go down or recover
- set up a self-hosted infrastructure monitoring dashboard
- extend monitoring with custom plugins
- track notification and problem history over time

## When to choose
- you need a battle-tested, self-hosted monitoring solution with a large plugin ecosystem
- you want fine-grained control over host/service checks and alerting
- you prefer a lightweight C-based core without heavy runtime dependencies

## When to avoid
- you want modern dashboards and metrics out of the box (consider Prometheus/Grafana)
- you need agent-based auto-discovery and cloud-native integrations
- you prefer not to maintain CGI web interfaces and config-file-heavy setups

## Facets
- artifact type: application
- maturity: maintenance
- function: monitoring, alerting, logging, plugin-system
- domain: monitoring, infrastructure-as-code, networking, self-hosted
- platform: cross-platform, self-hosted
- tags: infrastructure-monitoring, network-monitoring, host-monitoring, nagios, c, web-interface, notifications, devops, linux, web-server

## Member repositories
- NagiosEnterprises/nagioscore (main) score 93

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:08.458583+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:58:21.110103+00:00, confidence not recorded.
  - readme: https://github.com/NagiosEnterprises/nagioscore (fetched 2026-08-28T04:06:08.458583+00:00, sha cf0bf5e6ef2d)
- Data as of 2026-08-30T08:39:29.467469+00:00.