Prometheus + Grafana 实时监控Linux

上篇中介绍了Prometheus， Grafana，并实现了实时监控Windows，回顾：Prometheus + Grafana 实时监控Windows

本篇来介绍一下Linux。

node exporter安装配置

1. 下载 node exporter

   wget https://github.com/prometheus/node_exporter/releases/download/v0.18.1/node_exporter-0.18.1.linux-amd64.tar.gz

2. 解压

   tar -zxvf node_exporter-0.18.1.linux-amd64.tar.gz

3. 添加系统服务 (vi /usr/lib/systemd/system/node_exporter.service)

   [Unit]
   Description=https://prometheus.io
   
   [Service]
   Restart=on-failure
   ExecStart=/opt/node_exporter-0.18.1.linux-amd64/node_exporter
   
   [Install]
   WantedBy=multi-user.target

4. 启动服务

   systemctl start node_exporter
   systemctl status node_exporter

5. 验证

   [root@izheyi node_exporter-0.18.1.linux-amd64]# curl http://localhost:9100/metrics
   # HELP go_gc_duration_seconds A summary of the GC invocation durations.
   # TYPE go_gc_duration_seconds summary
   go_gc_duration_seconds{quantile="0"} 0
   go_gc_duration_seconds{quantile="0.25"} 0
   go_gc_duration_seconds{quantile="0.5"} 0
   go_gc_duration_seconds{quantile="0.75"} 0
   go_gc_duration_seconds{quantile="1"} 0
   go_gc_duration_seconds_sum 0
   go_gc_duration_seconds_count 0
   # HELP go_goroutines Number of goroutines that currently exist.
   # TYPE go_goroutines gauge
   go_goroutines 6
   # HELP go_info Information about the Go environment.
   # TYPE go_info gauge
   go_info{version="go1.12.5"} 1

Prometheus配置

1. 添加prometheus相关配置， prometheus.yml

   - job_name: 'linux'  static_configs:
   
     - targets: ['192.168.174.128:9100']

2. 重启prometheus

3. 验证

   

Grafana配置

1. 配置Prometheus数据源

2. 搭建Prometheus仪表盘
   Import Dashboard: 8919

3. 验证