prometheus使用node_exporter监控linux主机

安装node_exporter

下载

wget https://github.com/prometheus/node_exporter/releases/download/v1.7.0/node_exporter-1.7.0.linux-amd64.tar.gz

解压

tar -zxvf node_exporter-1.7.0.linux-amd64.tar.gz

运行

nohup ./node_exporter &

出现监听端口就代表成功了

[root@aspfj738vhd034j node_exporter-1.7.0.linux-amd64]# tail -f nohup.out 
ts=2024-01-02T06:02:21.028Z caller=node_exporter.go:117 level=info collector=thermal_zone
ts=2024-01-02T06:02:21.028Z caller=node_exporter.go:117 level=info collector=time
ts=2024-01-02T06:02:21.028Z caller=node_exporter.go:117 level=info collector=timex
ts=2024-01-02T06:02:21.028Z caller=node_exporter.go:117 level=info collector=udp_queues
ts=2024-01-02T06:02:21.028Z caller=node_exporter.go:117 level=info collector=uname
ts=2024-01-02T06:02:21.028Z caller=node_exporter.go:117 level=info collector=vmstat
ts=2024-01-02T06:02:21.028Z caller=node_exporter.go:117 level=info collector=xfs
ts=2024-01-02T06:02:21.028Z caller=node_exporter.go:117 level=info collector=zfs
ts=2024-01-02T06:02:21.030Z caller=tls_config.go:274 level=info msg="Listening on" address=[::]:9100
ts=2024-01-02T06:02:21.030Z caller=tls_config.go:277 level=info msg="TLS is disabled." http2=false address=[::]:9100

修改Prometheus容器内的配置文件

[root@aspfj738vhd034j node_exporter-1.7.0.linux-amd64]# docker exec -it prometheus /bin/sh
/prometheus $ vi /etc/prometheus/prometheus.yml 

添加如下三行

  - job_name: 'node'                 
    static_configs:                  
    - targets: [142.171.235.206:9100]      

然后保存退出，重启prometheus容器

docker restart prometheus

进入prometheus的web界面，node的状态为up代表成功

设置node_exporter为系统服务

编辑服务文件

cat /usr/lib/systemd/system/node_exporter.service

添加如下内容

[Unit]
Description=node_exporter

[Service]
ExecStart=/soft/node_exporter-1.7.0.linux-amd64/node_exporter --web.listen-address=:9100
Restart=on-failure

[Install]
WantedBy=multi-user.target

重载服务

systemctl daemon-reload 

启动服务
systemctl restart node_exporter.service 

查看服务状态
systemctl status node_exporter.service 

设置服务开机自启

systemctl enable node_exporter.service