Docker Prometheus Exporter

Exports basic metrics from Docker to the defined endpoint with path / or /metrics for scraping by Prometheus.

Disclaimer - I'm still new to Rust, feel free to make an issue and tell me why what I'm doing is dumb.

Available Metrics

Metric Name	Description	Units/Values	Labels
docker_up	Reports the state of Docker	0 - Offline 1 - Online	N/A
container_health	Reports the health state of a Docker container	0 - Unknown 1 - Stopped 2 - Alive, no healthcheck 3 - Unhealthy 4 - Healthy	id - Container ID name - Container Name

Environment Variables

Name	Description	Default
RUST_LOG	Sets logging verbosity, see documentation	info
DOCKER_HOST	URI to the Docker API	Unix - unix:///var/run/docker.sock Other - tcp://127.0.0.1:2376
LISTEN_ADDR	Metrics endpoint listen address	0.0.0.0
LISTEN_PORT	Metrics endpoint listen port	9000

Example Docker Compose

services:
  docker-prometheus-exporter:
    container_name: docker-prometheus-exporter
    image: ghcr.io/calum4/docker-prometheus-exporter:latest
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      - RUST_LOG=info,docker_prometheus_exporter=info
    expose:
      - "9000:9000"
    ports:
      - "127.0.0.1:9000:9000"
    restart: unless-stopped