基于docker-compose、prometheus、grafana来搭建Linux服务器的监控。

用到的几个expoter说明：

  • node-exporter: 监控整个主机所有资源
  • cadvisor： 监控容器资源

创建目录

在主机上创建一些目录， 用来持久化监控数据和配置

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mkdir -p /opt/docker/monitor/config
mkdir -p /opt/docker/monitor/data
chmod 777 /opt/docker/monitor/data

创建docker-compose.yml

切换到/opt/docker/monitor目录， 新建docker-compose.yml， 内容如下：

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version: '2'
networks:
  monitor:
    driver: bridge

services:
  grafana:
    image: grafana/grafana
    container_name: monitor-grafana
    hostname: grafana
    restart: always
    volumes:
      - /opt/docker/monitor/data:/var/lib/grafana
    ports:
      - '11000:3000'
    networks:
      - monitor
      
  prometheus:
    image: prom/prometheus
    container_name: monitor-prometheus
    hostname: prometheus
    restart: always
    volumes:
      - /opt/docker/monitor/config/prometheus.yml:/etc/prometheus/prometheus.yml
    ports:
      - '11001:9090'
    networks:
      - monitor
      
  node-exporter:
    image: quay.io/prometheus/node-exporter
    container_name: monitor-node-exporter
    hostname: node-exporter
    restart: always
    ports:
      - '11002:9100'
    networks:
      - monitor
  
  cadvisor:
    image: google/cadvisor
    container_name: monitor-cadvisor
    hostname: cadvisor
    restart: always
    volumes:
      - /:/rootfs:ro
      - /var/run:/var/run:ro
      - /sys:/sys:ro
      - /var/lib/docker/:/var/lib/docker:ro
      - /dev/disk/:/dev/disk:ro
    devices:
      - /dev/kmsg:/dev/kmsg
    ports:
      - '11003:8080'
    networks:
      - monitor

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创建prometheus.yml

切换到/opt/docker/monitor/config目录， 新建prometheus.yml，内容如下：

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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.
  # scrape_timeout is set to the global default (10s).

scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: 'prometheus'
    static_configs:
      - targets: ['10.0.0.239:11001']
  
  - job_name: 'node-exporter'
    static_configs:
      - targets: ['10.0.0.239:11002']
      
  - job_name: 'cadvisor'
    static_configs:
      - targets: ['10.0.0.239:11003']

页面配置

  1. 启动容器 docker-compose up -d
  2. 待容器成功启动之后，进入dashboard页面, 页面地址：http://10.0.0.239:11000， 第一次进入时的默认用户名和密码是：admin/admin， 然后需要设置新密码
  3. 配置datasource, 选择prometheus, URL填写： http://10.0.0.239:11001
  4. 从模板网站找到自己喜欢的模板， 比如模板ID为1860， 直接输入ID， 然后点击load导入即可。

说明一下几个exporter用到的比较好用的模板ID

  • node-exporter: 1860
  • process-exporter： 249
  • cadvisor： 11600