prometheus/documentation/examples/prometheus-dockerswarm.yml

# A example scrape configuration for running Prometheus with
# Docker Swarm.

scrape_configs:

  # Make Prometheus scrape itself for metrics.
  - job_name: 'prometheus'
    static_configs:
    - targets: ['localhost:9090']

  # Create a job for Docker daemons.
  #
  # This exemple requires Docker daemons to be configured to expose
  # Prometheus metrics, as documented here:
  # https://docs.docker.com/config/daemon/prometheus/
  - job_name: 'docker'
    dockerswarm_sd_configs:
      - host: unix:///var/run/docker.sock # You can also use http/https to connect to the Docker daemon.
        role: nodes
    relabel_configs:
      # Fetch metrics on port 9323.
      - source_labels: [__meta_dockerswarm_node_address]
        target_label: __address__
        replacement: $1:9323

  # Create a job for Docker Swarm containers.
  #
  # This example works with cadvisor deployed with:
  # docker service create --name cadvisor -l prometheus-job=cadvisor
  #     --mode=global --publish published=8080,target=8080,mode=host
  #     --mount type=bind,src=/var/run/docker.sock,dst=/var/run/docker.sock,ro
  #     --mount type=bind,src=/,dst=/rootfs,ro
  #     --mount type=bind,src=/var/run,dst=/var/run
  #     --mount type=bind,src=/sys,dst=/sys,ro
  #     --mount type=bind,src=/var/lib/docker,dst=/var/lib/docker,ro
  #     google/cadvisor -docker_only
  - job_name: 'dockerswarm'
    dockerswarm_sd_configs:
      - host: unix:///var/run/docker.sock # You can also use http/https to connect to the Docker daemon.
        role: tasks
    relabel_configs:
      # Only keep containers that should be running.
      - source_labels: [__meta_dockerswarm_task_desired_state]
        regex: running
        action: keep
      # Only keep containers that have a `prometheus-job` label.
      - source_labels: [__meta_dockerswarm_service_label_prometheus_job]
        regex: .+
        action: keep
      # Use the task labels that are prefixed by `prometheus-`.
      - regex: __meta_dockerswarm_service_label_prometheus_(.+)
        action: labelmap
        replacement: $1