控制机：本机Mac， 安装启动 prometheus, 启动后默认暴露9090端口
监测机：远程云主机，安装启动 node_exporter，启动后默认暴露9100端口

prometheus 就是通过 IP:9100/metrics 抓取数据

控制机

下载

wget https://github.com/prometheus/prometheus/releases/download/v2.32.0-rc.1/prometheus-2.32.0-rc.1.darwin-amd64.tar.gz

解压

有两个bin文件

prometheus Prometheus监听服务器，去指定的节点抓数据
promtool 验证配置文件

image.png
mv prometheus /usr/local/bin
mv promtool /usr/local/bin

如果是Linux系统，可以做成系统服务
vim /etc/systemd/system/prometheus.service

  1. [Unit]
  2. Description=Prometheus
  3. Documentation=https://prometheus.io/
  4. After=network.target
  5. [Service]
  6. Type=simple
  7. ExecStart=/usr/local/bin/prometheus --web.enable-lifecycle --config.file=/opt/prometheus/prometheus.yml --storage.tsdb.retention.time=7d --storage.tsdb.path=/opt/prometheus/data
  8. Restart=on-failure
  9. [Install]
  10. WantedBy=multi-user.target

设置开机自启，并检查服务开启状态
sudo systemctl enable prometheus
sudo systemctl start prometheus
sudo systemctl status prometheus

prometheus 启动命令

  1. prometheus --config.file="main.yaml" --storage.tsdb.retention.time=7d --web.enable-admin-api --web.enable-lifecycle

�这个是主配置文件，可以配置抓取目标，抓取频率，告警目标等
main.yaml

  1. # my global config
  2. global:
  3.   scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  4.   evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  5.   # scrape_timeout is set to the global default (10s).
  7. # Alertmanager configuration
  8. # 先注释，等启动Alertmanager再开启
  9. # alerting:
  10.   # alertmanagers:
  11.    # - static_configs:
  12.      #   - targets:
  13.       #    - localhost:9093
  15. # Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
  17. # 告警规则
  18. # rule_files:
  19.  # - rules/*.yml
  20.   # - "alert_rule1.yaml"
  22. # A scrape configuration containing exactly one endpoint to scrape:
  23. # 这里表示抓取对象的配置
  24. # Here it's Prometheus itself.
  25. # 这里是抓取promethues自身的配置
  26. scrape_configs:
  27.   # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  28.   # 这个配置是表示在这个配置内的时间序例，每一条都会自动添加上这个{job_name:"prometheus"}的标签。
  29.   - job_name: "prometheus"
  31.     # 默认通过 localhost:9090/metrics 该地址抓起指标信息
  32.     # metrics_path defaults to '/metrics'
  33.     # scheme defaults to 'http'.
  35.     # 重写了全局抓取间隔时间，由15秒重写成5秒。
  36.     scrape_interval: 5s
  38.     static_configs:
  39.       - targets: ["localhost:9090"]
  40.   - job_name: "cloud2"
  41.     scrape_interval: 15s
  42.     static_configs:
  43.       - targets: ["49.xxx.xxx.70:9100"]
  44.     basic_auth:
  45.       username: prometheus
  46.       password: XlP*****BjAen

部署node_exporter到监测节点

主要用来监控服务器的基础信息，如: cpu、内存、磁盘、网卡

下载 node_exporter-1.3.1.linux-amd64.tar
wget https://finley-soft.pek3b.qingstor.com/node_exporter
mv node_exporter /usr/local/bin

如果不希望任何人都能访问web页面，创建web配置文件，使用basic auth
vi /opt/node_exporter/web-config.yaml

  1. basic_auth_users:
  2.   prometheus: $2y$10$Os6Pjwg********Xu2zagy96E.dFqhZywaUphuNSEjzfN742

vi /etc/systemd/system/node_exporter.service

  1. [Unit]
  2. Description=node_exporter
  3. Documentation=https://prometheus.io/
  4. After=network.target
  5. [Service]
  6. Type=simple
  7. User=ubuntu
  8. ExecStart=/usr/local/bin/node_exporter --web.listen-address=":9100" --web.config="/opt/node_exporter/web-config.yaml"
  9. Restart=on-failure
  10. [Install]
  11. WantedBy=multi-user.target

systemctl enable node_exporter
systemctl start node_exporter

浏览器打开 localhost:9100
如果node_exoporter跑在服务器，注意防火墙开放相关端口