资源规划

安装介质

版本：node_exporter-0.17.0.linux-amd64.tar.gz
下载：https://prometheus.io/download/#node_exporter

环境准备

安装Prometheus

参考：《CentOS7.6-安装Prometheus-2.10.0》

安装探针

使用Prometheus监控Linux服务器，需要在Linux服务器上配置探针：Prometheus node exporter。注意：使用root用户安装。

解压缩

cd /share
wget https://github.com/prometheus/node_exporter/releases/download/v0.17.0/node_exporter-0.17.0.linux-amd64.tar.gz
tar -xvzf node_exporter-0.17.0.linux-amd64.tar.gz
mkdir -p /usr/local/prometheus/exporter
rm -rf /usr/local/prometheus/exporter/node_exporter
mv /share/node_exporter-0.17.0.linux-amd64 /usr/local/prometheus/exporter/node_exporter

授权

chown -R prometheus:prometheus /usr/local/prometheus/exporter

探针服务配置

rm -rf /usr/lib/systemd/system/node_exporter.service
vi /usr/lib/systemd/system/node_exporter.service

配置如下：

[Unit]
Description=node_exporter
Documentation=https://prometheus.io/
After=network.target
[Service]
Type=simple
User=prometheus
ExecStart=/usr/local/prometheus/exporter/node_exporter/node_exporter
Restart=on-failure
[Install]
WantedBy=multi-user.target

启动探针

systemctl daemon-reload
systemctl enable node_exporter
systemctl start node_exporter
systemctl stop node_exporter
systemctl disable node_exporter

验证探针

systemctl status node_exporter
ps -ef | grep node_exporter
# 端口查看
netstat -anpt

Web UI：http://192.168.0.101:9100
Metric URL：http://192.168.0.101:9100/metrics

Prometheus服务配置

vi /usr/local/prometheus/prometheus.yml

配置如下（scrape_configs节点）：

  - job_name: 'node_exporter'
    scrape_interval: 5s
    static_configs:
      - targets: ['192.168.0.101:9100']

重启Prometheus服务：

systemctl restart prometheus.service

验证Prometheus

systemctl status prometheus.service
ps -ef | grep prometheus
# 端口查看
netstat -anpt

Web UI：http://192.168.0.101:9090/graph
Targets UI：http://192.168.0.101:9090/targets