# coreos/fleet

fleet ties together systemd and etcd into a distributed init system

Repository: https://github.com/coreos/fleet
Canonical: https://ross.abutalabs.com/products/coreos-fleet
Language: Go
License: Apache-2.0
License Family: permissive
Archived: true
Last push: 2019-02-05T05:49:16+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4709, "days_push": 2766, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2415, forks 295 (observed 2026-08-28T04:06:50.278700+00:00)

## What it is
fleet is a distributed init system that ties together systemd and etcd to schedule systemd units across a cluster of Linux machines. It is a low-level foundation for cluster orchestration, not a full container manager.

## Use cases
- schedule systemd services across a cluster of machines
- run the same service on every node in a cluster
- launch and inspect cluster-wide units with fleetctl
- build higher-level orchestration on top of systemd and etcd
- manage small Linux clusters without Kubernetes

## When to choose
- you maintain a legacy CoreOS Container Linux cluster already using fleet
- you need simple systemd unit scheduling across fewer than 100 nodes
- you want a minimal systemd-plus-etcd clustering primitive rather than a full orchestrator

## When to avoid
- starting any new project - it is deprecated and no longer maintained
- you need container orchestration - use Kubernetes instead
- clusters larger than 100 nodes or more than 1000 services due to scalability limits
- you need active community support or security fixes

## Facets
- artifact type: service
- maturity: abandoned
- function: container-orchestration, scheduling, deployment, cli
- domain: microservices, infrastructure-as-code, self-hosted
- platform: go, cli, self-hosted
- tags: systemd, etcd, cluster-init, deprecated, coreos, distributed-init-system, containers, devops, linux

## Member repositories
- coreos/fleet (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:50.278700+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 2026-08-30T02:33:11.067922+00:00, confidence not recorded.
  - readme: https://github.com/coreos/fleet (fetched 2026-08-28T04:06:50.278700+00:00, sha bad5d399ec60)
- Data as of 2026-08-30T08:39:29.467469+00:00.