prometheus docker sd

Prometheus is a monitoring and alerting tool used for monitoring various metrics, such as CPU usage, memory usage, disk space utilization, and network traffic. Docker is a popular containerization platform used for running and managing applications in containers.

To monitor Docker containers with Prometheus, you can use the Prometheus Docker SD (Service Discovery) feature. This feature allows Prometheus to automatically discover and monitor Docker containers and their metrics.

To use Prometheus Docker SD, you need to configure it to scan the Docker daemon API for running containers. You can do this by adding the following configuration to the Prometheus configuration file:

scrape_configs:
  - job_name: 'docker'
    metrics_path: '/metrics'
    static_configs:
      - targets: ['docker:9323']
    relabel_configs:
      - source_labels: [__meta_docker_container_label_com_docker_swarm_service_name]
        target_label: job
      - source_labels: [__meta_docker_container_label_com_docker_swarm_task_id]
        target_label: task
      - source_labels: [__meta_docker_container_label_com_docker_swarm_node_id]
        target_label: instance

This configuration instructs Prometheus to scrape metrics from the Docker daemon API at `http://docker:9323/metrics`. It also relabels the metrics with additional metadata, such as the Docker Swarm service name, task ID, and node ID.

Once you have configured Prometheus Docker SD, you can start monitoring Docker containers and their metrics.