功能简介

• Prometheus：采集数据
• Grafana ：图表展示数据
• node-exporter：用于收集操作系统和硬件信息的 metrics
• cadvisor：用于收集 docker 的相关 metrics

环境准备

部署 Prometheus 和 Grafana

创建文件夹

mkdir /data/prometheus/
cd /data/prometheus/

创建prometheus.yml

注：根据实际情况修改IP地址

global:
  scrape_interval:     15s
  evaluation_interval: 15s
 
alerting:
  alertmanagers:
  - static_configs:
    - targets: ['10.0.0.101:9093']
 
rule_files:
  - "node_down.yml"
 
scrape_configs:
 
  - job_name: 'prometheus'
    static_configs:
    - targets: ['10.0.0.101:9090']
 
  - job_name: 'node'
    scrape_interval: 8s
    static_configs:
    - targets: ['10.0.0.101:9100', '10.0.0.102:9100']
 
  - job_name: 'cadvisor'
    scrape_interval: 8s
    static_configs:
    - targets: ['10.0.0.101:8088', '10.0.0.102:8088']

创建node_down.yml

groups:
- name: node_down
  rules:
  - alert: InstanceDown
    expr: up == 0
    for: 1m
    labels:
      user: test
    annotations:
      summary: "Instance {{ $labels.instance }} down"
      description: "{{ $labels.instance }} of job {{ $labels.job }} has been down for more than 1 minutes."

在docker01服务器上创建docker-compose.yml

version: '2'
 
networks:
    monitor:
        driver: bridge
 
services:
    prometheus:
        image: prom/prometheus
        container_name: prometheus
        hostname: prometheus
        restart: always
        volumes:
            - /data/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
            - /data/prometheus/node_down.yml:/etc/prometheus/node_down.yml
        ports:
            - "9090:9090"
        networks:
            - monitor
 
    grafana:
        image: grafana/grafana
        container_name: grafana
        hostname: grafana
        restart: always
        ports:
            - "3000:3000"
        networks:
            - monitor
 
    node-exporter:
        image: quay.io/prometheus/node-exporter
        container_name: node-exporter
        hostname: node-exporter
        restart: always
        ports:
            - "9100:9100"
        networks:
            - monitor
 
    cadvisor:
        image: google/cadvisor:latest
        container_name: cadvisor
        hostname: cadvisor
        restart: always
        volumes:
            - /:/rootfs:ro
            - /var/run:/var/run:rw
            - /sys:/sys:ro
            - /var/lib/docker/:/var/lib/docker:ro
        ports:
            - "8088:8080"
        networks:
            - monitor

在docker02服务器上创建docker-compose.yml

version: '2'
 
networks:
    monitor:
        driver: bridge
 
services:
    node-exporter:
        image: quay.io/prometheus/node-exporter
        container_name: node-exporter
        hostname: node-exporter
        restart: always
        ports:
            - "9100:9100"
        networks:
            - monitor
 
    cadvisor:
        image: google/cadvisor:latest
        container_name: cadvisor
        hostname: cadvisor
        restart: always
        volumes:
            - /:/rootfs:ro
            - /var/run:/var/run:rw
            - /sys:/sys:ro
            - /var/lib/docker/:/var/lib/docker:ro
        ports:
            - "8088:8080"
        networks:
            - monitor

在docker01和docker02服务器上分别启动docker-compose

// 拉取镜像并启动相关容器
docker-compose up -d

// 验证容器是否启动成功
docker ps

验证是否安装成功

在浏览器中输入：http:安装Prometheus的服务器IP:9090/targets，如果State 都是up 即代码Prometheus 安装成功

配置Grafana

在浏览器中输入http:安装Prometheus的服务器IP:3000 

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