Ship Facter facts to Elasticsearch or Logstash.
Go Makefile Python PowerShell


Factbeat is a Beat that ships Facter facts to Elasticsearch, where they can be stored, analyzed and compared over time.

Facter Version

Facter 3 (cFacter) is recommended, and is the default. The output from Facter 3 is more structured and more stable than that of Facter 2, which makes for a much better experience with Factbeat and Elasticsearch.

If you really want to, you can configure the path to Facter, so you could point Factbeat at Facter 2 instead.


Pre-built binaries are availble for Windows and Linux (x86_64) on the releases page.

The downloads for both platforms contain:

  • The factbeat or factbeat.exe binary
  • An example factbeat.yml config file
  • The Elasticsearch mapping template: factbeat.template.json

It's best to install the mapping template before running Factbeat, with something like:

curl -XPUT 'http://elasticsearch:9200/_template/factbeat' -d@factbeat.template.json

The Windows archive also contains two Powershell scripts, for registering and removing the Factbeat Windows service.


Build Status

Like all Beats, Factbeat is written in Go. If you are familiar with Go, and have a development environment set up, feel free to build Factbeat like any other Go program.


Containers, containers, containers

Factbeat ships with a fully containerized build and test pipeline. It provides containers that can build the Go source code and run its unit tests. There are also containers that manage acceptance testing using Python and a live Elasticsearch instance.

The containerized build/test sytem requires that you have:

  • docker
  • docker-compose
  • make

However you don't need to install Go, Elasticsearch, Python etc. They are all packaged for you in Docker containers.

Given the above dependencies, you should be able to simply:


to get a ./factbeat binary.

Though let's not forget:

make unit-test


make acceptance-test


  • Allow blacklist/whitelist of facts.
  • Convert percents to beats style ie. "83.3%" -> 0.833
  • Consider removing disk stats all together, since Topbeat has them covered.
  • Improved mapping template.
  • Automate installing the mapping template.
  • Your suggestions.