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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