Prometheus / Grafana / Node Exporter and Docker SD

docker-compose.yml

version: "3.8"

services:
  prometheus:
    image: prom/prometheus:v2.45.0
    command:
      - "--web.enable-admin-api"
    ports:
      - "9090:9090"
    volumes:
      - prometheus-data:/prometheus/data
      - ./prometheus.yml:/prometheus/prometheus.yml
      - /var/run/docker.sock:/var/run/docker.sock
    user: root
    restart: always
    labels:
      - "prometheus.enable=true"

  # 1. Open localhost:3000
  # 2. Login as "admin" with password "admin"
  # 3. Add Prometheus data source pointing to http://prometheus:9090
  # 4. Go to Explore and explore stuff :)
  grafana:
    image: grafana/grafana:9.5.6
    ports:
      - "3000:3000"
    volumes:
      - grafana-data:/var/lib/grafana
    user: root
    restart: always
    labels:
      - "prometheus.enable=true"

  # https://grafana.com/docs/grafana-cloud/quickstart/docker-compose-linux/
  node-exporter:
    image: prom/node-exporter:v1.6.1
    volumes:
      - /proc:/host/proc:ro
      - /sys:/host/sys:ro
      - /:/rootfs:ro
    command:
      - '--path.procfs=/host/proc'
      - '--path.rootfs=/rootfs'
      - '--path.sysfs=/host/sys'
      - '--collector.filesystem.mount-points-exclude=^/(sys|proc|dev|host|etc)($$|/)'
    labels:
      - "prometheus.enable=true"

volumes:
  prometheus-data:
  grafana-data:

prometheus.yml

global:
  scrape_interval: 10s

scrape_configs:
  - job_name: "prometheus"
    static_configs:
      - targets: ["localhost:9090"]

  - job_name: docker_sd
    docker_sd_configs:
      - host: unix:///var/run/docker.sock
        filters:
          - name: label
            values:
              - prometheus.enable=true
    relabel_configs:
      - source_labels:
          - __meta_docker_container_id
        target_label: docker_container_id
      - source_labels:
          - __meta_docker_container_name
        target_label: docker_container_name