Grafana监控Redis：运维新策略

Linux运维智行录 2024-11-21

在当今快节奏的互联网环境中，Redis作为一款高性能的键值存储系统，广泛应用于缓存、消息队列等场景。为了确保Redis的稳定性和高效性，实时监控其性能指标变得尤为重要。Grafana是一款强大的开源数据可视化工具，它可以帮助我们轻松构建Redis的监控面板。本文将详细介绍如何使用Grafana搭建Redis监控面板，让您一目了然地掌握Redis的运行状态。

预防胜于治疗，监控先行

部署redis-exporter

1、下载部署包

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

2、获取二进制命令

$ 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/

3、启动服务

$ 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.

4、清理环境

$ rm -rf ${tmpdir}

Prometheus采集redis指标

1、Prometheus采集pgpool2数据

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

2、验证是否采集成功

$ 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"]}]}}

grafana添加redis监控面板

grafana上添加 redis 面板(ID：18345)，地址：https://grafana.com/grafana/dashboards/18345-redis-overview/

效果图