Prometheus（二）配置node_exporter监控

#上传软件包

[root@localhost ~] ll /opt/node_exporter-0.18.1.linux-amd64.tar.gz 
-rw-r--r--. 1 root root 8083296 May 12 20:21 /opt/node_exporter-0.18.1.linux-amd64.tar.gz

#解压缩

[root@localhost opt] tar -zxvf node_exporter-0.18.1.linux-amd64.tar.gz
[root@localhost opt] cp -rf node_exporter-0.18.1.linux-amd64 /usr/local/node_exporter

#启动

[root@localhost opt] cd /usr/local/node_exporter/
[root@localhost node_exporter] ./node_exporter

浏览器访问 ip:9100/

写一个启动脚本

[root@localhost ~]# cat /usr/lib/systemd/system/node_exporter.service

[Unit]
Description=node_exporter
Documentation=https://prometheus.io/
After=network-online.target

[Service]
Type=simple
User=root
Group=root
ExecStart=/usr/local/node_exporter/node_exporter
Restart=on-failure

[Install]
WantedBy=multi-user.target

systemctl daemon-reload
systemctl stop node_exporter 
systemctl start node_exporter 
systemctl restart node_exporter 

修改prometheus.yml的配置文件,targets就是不熟node_exporter的地址

重启

systemctl restart prometheus

已经添加进来了

如查看CPU命令
(1-(sum(increase(node_cpu_seconds_total{mode=“idle”}[1m]))by(instance))/(sum(increase(node_cpu_seconds_total[1m]))by(instance)))*100