# SUPERSEDED 2026-03-21: Do NOT deploy this as a Swarm stack.
# Swarm mode blocks pid: host, causing cross-node /proc namespace contamination
# where node-exporter reads wrong host's memory metrics.
# Use standalone Compose on each node instead:
#   compose/hf-pdocker-01/node-exporter/docker-compose.yml
#   compose/hf-pdocker-02/node-exporter/docker-compose.yml
#   compose/bart/node-exporter/docker-compose.yml

services:
  node-exporter:
    image: prom/node-exporter:v1.7.0
    hostname: "{{.Node.Hostname}}"
    pid: host
    ports:
      - "9100:9100"
    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)($$|/)'
    logging:
      driver: "json-file"
      options:
        max-size: "50m"
        max-file: "3"
    deploy:
      mode: global
      resources:
        limits:
          memory: 128M