# ClusterLabs/pacemaker

Pacemaker is an advanced, scalable High-Availability cluster resource manager

Repository: https://github.com/ClusterLabs/pacemaker
Canonical: https://ross.abutalabs.com/products/pacemaker
Homepage: https://www.clusterlabs.org/pacemaker/
Language: C
License: NOASSERTION
License Family: other
Last push: 2026-08-24T17:55:16+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 83, longevity 100
- inputs: {"age_days": 5481, "days_push": 9, "days_rel": 36, "gap_med": 48.5, "n_releases_24m": 7}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1169, forks 364 (observed 2026-08-28T04:03:50.970727+00:00)

## What it is
Pacemaker is an advanced, scalable high-availability cluster resource manager written in C. It coordinates the configuration, start-up, monitoring, and recovery of interrelated services across all nodes of a cluster.

## Use cases
- keep services highly available across cluster nodes
- automatically fail over services when a node fails
- monitor and recover cluster resources
- manage start-up order of interdependent services
- build an HA cluster on Linux

## When to choose
- you need proven, mature high-availability clustering on Linux
- you must coordinate failover of interrelated services across nodes
- you want an open-source alternative to proprietary HA clustering

## When to avoid
- you only need container orchestration rather than classic HA resource management
- you run a single node with no failover requirements
- you need a cloud-managed HA solution rather than self-managed clusters

## Facets
- artifact type: application
- maturity: stable
- function: deployment, monitoring, configuration-management
- domain: infrastructure-as-code, microservices, self-hosted
- platform: self-hosted
- tags: high-availability, cluster-resource-manager, failover, clustering, corosync, devops, linux

## Member repositories
- ClusterLabs/pacemaker (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:50.970727+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 2026-08-30T06:28:39.763347+00:00, confidence not recorded.
  - readme: https://github.com/ClusterLabs/pacemaker (fetched 2026-08-28T04:03:50.970727+00:00, sha 5ad5d609263e)
- Data as of 2026-08-30T08:39:29.467469+00:00.