CentOS7安装Node_exporter(二进制)

淩亂°似流年 2023-06-17 06:59 15阅读 0赞

# 一、概述 #

Node\_exporter是可以在\* Nix和Linux系统上运行的计算机度量标准的导出器。  
Node\_exporter 主要用于暴露 metrics 给 Prometheus，其中 metrics 包括：cpu 的负载，内存的使用情况，网络等。

## 环境说明 ##

操作系统：centos 7.6  
ip地址：192.168.31.150

## 下载包 ##

[https://prometheus.io/download/][https_prometheus.io_download]  
目前最新版是：0.18.1  
下载链接：  
[https://github.com/prometheus/node\_exporter/releases/download/v0.18.1/node\_exporter-0.18.1.linux-amd64.tar.gz][https_github.com_prometheus_node_exporter_releases_download_v0.18.1_node_exporter-0.18.1.linux-amd64.tar.gz]

# 二、安装 #

useradd prometheus -s /sbin/nologin
    tar zxvf node_exporter-0.18.1.linux-amd64.tar.gz -C /data/
    mv /data/node_exporter-0.18.1.linux-amd64 /data/node_exporter
    chown prometheus:prometheus -R /data/node_exporter

## 封装service ##

vi /etc/systemd/system/node-exporter.service

内容如下：

[Unit]
    Description=Prometheus Node Exporter
    After=network.target
    [Service]
    ExecStart=/data/node_exporter/node_exporter
    User=prometheus
    [Install]
    WantedBy=multi-user.target

注意：主要修改ExecStart和User

设置开机自启动

systemctl daemon-reload
    systemctl enable node-exporter
    systemctl start node-exporter

查看端口

# ss -tunlp|grep node
    tcp    LISTEN     0      128      :::9100                 :::*                   users:(("node_exporter",pid=990,fd=3))

# 三、添加node节点 #

登录到prometheus服务器，备份配置文件

cd /data/prometheus
    cp prometheus.yml prometheus.yml.bak
    cat prometheus.yml.bak|grep -v '^#'|grep -v '^  #'|grep -v '^    #' > prometheus.yml

## 增加job\_name ##

名字为：node\_exporter

vi prometheus.yml

完整内容如下：

global:
      scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
      evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
    alerting:
      alertmanagers:
      - static_configs:
        - targets:
          # - alertmanager:9093
    rule_files:
    scrape_configs:
      - job_name: 'prometheus'
        static_configs:
        - targets: ['localhost:9090']
      - job_name: 'node_exporter'
        static_configs:
        - targets:
          - 'localhost:9100'

## 重启prometheus ##

systemctl restart prometheus

## 查看targets ##

[http://192.168.31.150:9090/targets][http_192.168.31.150_9090_targets]  
效果如下：

![1341090-20191127175500698-538191.png][]

确保状态为UP

[https_prometheus.io_download]: https://prometheus.io/download/
[https_github.com_prometheus_node_exporter_releases_download_v0.18.1_node_exporter-0.18.1.linux-amd64.tar.gz]: https://github.com/prometheus/node_exporter/releases/download/v0.18.1/node_exporter-0.18.1.linux-amd64.tar.gz
[http_192.168.31.150_9090_targets]: http://192.168.31.150:9090/targets
[1341090-20191127175500698-538191.png]: https://img2018.cnblogs.com/i-beta/1341090/201911/1341090-20191127175500698-538191.png