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Nelson Adonis Hernández
Nelson Adonis Hernández

Posted on • Updated on

How to monitor Redis with Prometheus and Grafana | Docker

For this example we will use Docker compose to be able to run all the services

  1. Docker Compose
version: "3.9"
services:
  grafana:
    image: grafana/grafana
    ports:
      - 3000:3000
  prometheus:
    image: prom/prometheus
    container_name: prometheus
    ports:
      - 9090:9090
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml:ro
  redis:
    image: "bitnami/redis:latest"
    ports:
      - 6379:6379
    environment:
      - REDIS_REPLICATION_MODE=master
      - REDIS_PASSWORD=my_master_password

  redis-exporter:
    image: oliver006/redis_exporter
    ports:
      - 9121:9121
    restart: unless-stopped
    environment:
      REDIS_ADDR: "redis:6379"
      REDIS_USER: null
      REDIS_PASSWORD: my_master_password
    links:
      - redis
      - prometheus

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2.Prometheus File Settings (prometheus.yml)

global:
  scrape_interval:     15s
  evaluation_interval: 15s

scrape_configs:
  - job_name: prometheus
    static_configs:
      - targets: ['localhost:9090']
  - job_name: redis-exporter
    static_configs:
      - targets: ['redis-exporter:9121']

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3.Run Docker Compose

docker-compose up
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4.Check status of Prometheus and Redis Exporter

http://localhost:9090/targets
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5.Visit Grafana Dashboard

Default

User: admin
Password: admin

http://localhost:3000
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6.Add data source

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Save and test

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7.Import Redis Dashboard for Prometheus

For this we will use a Dashboard created by the community

Redis Dashboard for Prometheus

https://grafana.com/grafana/dashboards/763

8.Import JSON or code

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Import JSON of code

Code: 763

JSON:
https://grafana.com/api/dashboards/763/revisions/3/download

9.Dashboard

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Code of example (GitHub Gist)
https://gist.github.com/nelsoncode019/722727fdba11d846e39dc99f8064f7fe

Discussion (3)

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ianvaughan profile image
Ian Vaughan

Step 6 I get:
Error reading Prometheus: Post "localhost:9090/api/v1/query": dial tcp 127.0.0.1:9090: connect: connection refused

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nelsoncode profile image
Nelson Adonis Hernández Author

you must write prometheus:9090
to access the Internal Docker network

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ianvaughan profile image
Ian Vaughan

Ah I missed that, thanks a lot!