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List Tools That I Used in This Tutorial

  1. Docker

  2. NATS

  3. Prometheus NATS exporter

How To

  1. This was example file docker-compose with NATS & it exporter
version: "3.8"

services:

  nats:
    container_name: nats
    image: nats:latest
    restart: unless-stopped
    ports:
      - "4222:4222"
    # -p 4222, run nats on port 4222
    # -m 8222, run metric on port 8222
    command: "-p 4222 -m 8222"
    networks:
      - nats-public

  nats_exporter:
    image: natsio/prometheus-nats-exporter:latest
    restart: unless-stopped
    depends_on:
      - nats
    container_name: nats_exporter
    ports:
      - "7777:7777"
    command: "-varz -jsz=all http://nats:8222"
    networks:
      - nats-public

networks:
  nats-public:
  1. To check if it running correctly, use docker logs -f nats & docker logs -f nats_exporter, if both running then you can check nats metric with curl localhost:7777/metrics
Check NATS docker logs

Check NATS docker logs

Make Sure, It Got A Same Name With NATS Server

Make Sure, It Got A Same Name With NATS Server

  1. Then go to your grafana

    a. Import dashboard

    b. Copy JSON file from this prometheus-nats-exporter github

    NATS Dashboard on Grafana

    NATS Dashboard on Grafana

Source:

A Walkthrough of Monitoring NATS with Prometheus and Grafana