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Prometheus GitHub Exporter

Exposes basic metrics for your repositories from the GitHub API, to a Prometheus compatible endpoint.

Configuration

This exporter is setup to take input from environment variables. All variables are optional:

  • ORGS If supplied, the exporter will enumerate all repositories for that organization. Expected in the format "org1, org2".
  • REPOS If supplied, The repos you wish to monitor, expected in the format "user/repo1, user/repo2". Can be across different Github users/orgs.
  • USERS If supplied, the exporter will enumerate all repositories for that users. Expected in the format "user1, user2".
  • GITHUB_TOKEN If supplied, enables the user to supply a github authentication token that allows the API to be queried more often. Optional, but recommended.
  • GITHUB_TOKEN_FILE If supplied instead of GITHUB_TOKEN, enables the user to supply a path to a file containing a github authentication token that allows the API to be queried more often. Optional, but recommended.
  • API_URL Github API URL, shouldn't need to change this. Defaults to https://api.github.com
  • LISTEN_PORT The port you wish to run the container on, the Dockerfile defaults this to 9171
  • METRICS_PATH the metrics URL path you wish to use, defaults to /metrics
  • LOG_LEVEL The level of logging the exporter will run with, defaults to debug

Install and deploy

Run manually from Docker Hub:

docker run -d --restart=always -p 9171:9171 -e REPOS="infinityworks/ranch-eye, infinityworks/prom-conf" infinityworks/github-exporter

Build a docker image:

docker build -t <image-name> .
docker run -d --restart=always -p 9171:9171 -e REPOS="infinityworks/ranch-eye, infinityworks/prom-conf" <image-name>

Docker compose

github-exporter:
    tty: true
    stdin_open: true
    expose:
      - 9171
    ports:
      - 9171:9171
    image: infinityworks/github-exporter:latest
    environment:
      - REPOS=<REPOS you want to monitor>
      - GITHUB_TOKEN=<your github api token>

Metrics

Metrics will be made available on port 9171 by default An example of these metrics can be found in the METRICS.md markdown file in the root of this repository

Tests

There is a set of blackbox behavioural tests which validate metrics endpoint in the test directory. Run as follows

make test

Version Release Procedure

Once a new pull request has been merged into master the following script should be executed locally. The script will trigger a new image build in docker hub with the new image having the tag release-<version>. The version is taken from the VERSION file and must follow semantic versioning. For more information see semver.org.

Prior to running the following command ensure the number has been increased to desired version in VERSION:

./release-version.sh

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