How to Build a Real-Time Redis Monitoring Dashboard with Grafana and Prometheus

In today's fast‑paced internet environment, Redis is widely used as a high‑performance key‑value store for caching, message queues, and more. Real‑time monitoring of its performance metrics is essential. Grafana, an open‑source visualization tool, helps build a Redis monitoring dashboard.

1. Deploy redis‑exporter

<code>$ curl -O https://github.com/oliver006/redis_exporter/releases/download/v1.66.0/redis_exporter-v1.66.0.linux-amd64.tar.gz</code>

<code>$ tmpdir=$(mktemp -d)
$ tar xvf redis_exporter-v1.66.0.linux-amd64.tar.gz -C ${tmpdir}
$ sudo mv ${tmpdir}/redis_exporter*/redis_exporter /usr/local/bin/</code>

<code>$ cat <<'EOF' | sudo tee /usr/lib/systemd/system/redis_exporter.service > /dev/null
[Unit]
Description=redis_exporter
Documentation=https://github.com/oliver006/redis_exporter
Wants=network.service
After=network.service

[Service]
Type=simple
User=postgres
Environment=REDIS_PASSWORD=123456
ExecStart=/usr/local/bin/redis_exporter
ExecStop=/bin/kill -s SIGTERM $MAINPID
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF

$ sudo systemctl daemon-reload
$ sudo systemctl enable redis_exporter --now
Created symlink from /etc/systemd/system/multi-user.target.wants/redis_exporter.service to /usr/lib/systemd/system/redis_exporter.service.</code>

<code>$ rm -rf ${tmpdir}</code>

2. Let Prometheus scrape Redis metrics

<code>$ kubectl -n kube-system edit cm prometheus
    - job_name: "redis-exporter"
      static_configs:
      - targets:
        - "172.139.20.81:9121"
        - "172.139.20.177:9121"</code>

<code>$ curl -s $(kubectl -n kube-system get svc prometheus -ojsonpath='{.spec.clusterIP}:{.spec.ports[0].port}')/prometheus/api/v1/query --data-urlencode 'query=up{job="redis-exporter"}'
{"status":"success","data":{"resultType":"vector","result":[{"metric":{"__name__":"up","instance":"172.139.20.177:9121","job":"redis-exporter"},"value":[1731982902.844,"1"]},{"metric":{"__name__":"up","instance":"172.139.20.81:9121","job":"redis-exporter"},"value":[1731982902.844,"1"]}]}}</code>

3. Add Redis dashboard to Grafana

Import the Redis overview dashboard (ID: 18345) from Grafana.com.

Conclusion

By following these steps you can quickly set up a powerful, easy‑to‑understand Redis monitoring panel in Grafana, improving observability and allowing proactive actions before issues arise, thus ensuring business continuity and stability.