cadvisor和Node Exporter都可以提供监控数据，前者重点关注与容器的状态，后者关注与节点的状态，这篇文章使用Prometheus Server + cadvisor + Node Exporter + Grafana介绍如何进行设定以进行监控。

版本信息

本文验证使用的软件的版本信息如下所示：

软件	版本信息
Prometheus Server	2.15.1
cadvisor	0.33.0
Node Exporter	0.18.1
Grafana	6.5.2

事前准备

环境准备

Prometheus + cadvisor + Node Exporter
docker-compose配置文件信息如下所示：

liumiaocn:nodecadvisor liumiao$ cat docker-compose.yml 
version: '2'

services:
    prometheus:
        image: prom/prometheus:v2.15.1
        privileged: true
        volumes:
            - ./prometheus.yml:/etc/prometheus/prometheus.yml
        command:
            - '--config.file=/etc/prometheus/prometheus.yml'
        ports:
            - '9090:9090'

    cadvisor:
        image: google/cadvisor:v0.33.0
        container_name: cadvisor
        restart: unless-stopped
        ports:
          - '8080:8080'
        volumes:
          - /:/rootfs:ro
          - /var/run:/var/run:rw
          - /sys:/sys:ro
          - /var/lib/docker/:/var/lib/docker:ro

    node-exporter:
        image: prom/node-exporter:v0.18.1
        ports:
            - '9100:9100'
liumiaocn:nodecadvisor liumiao$

而Prometheus所用到的配置文件信息如下所示, 使用时需要将IP替换为本机的IP

liumiaocn:nodecadvisor liumiao$ cat prometheus.yml 
global:
  scrape_interval:     10s
  evaluation_interval: 10s

scrape_configs:
  - job_name: 'node'
    static_configs:
      - targets: ['192.168.31.242:9100']
        labels:
          group: 'node_exporter'

  - job_name: 'cadvisor'
    static_configs:
      - targets: ['192.168.31.242:8080']
        labels:
          group: 'cadvisor_group'
liumiaocn:nodecadvisor liumiao$

启动服务

liumiaocn:nodecadvisor liumiao$ docker-compose up -d
Creating network "nodecadvisor_default" with the default driver
Creating nodecadvisor_node-exporter_1 ... done
Creating cadvisor                     ... done
Creating nodecadvisor_prometheus_1    ... done
liumiaocn:nodecadvisor liumiao$

服务确认

liumiaocn:nodecadvisor liumiao$ docker-compose ps
            Name                          Command                  State               Ports         
-----------------------------------------------------------------------------------------------------
cadvisor                       /usr/bin/cadvisor -logtostderr   Up (healthy)   0.0.0.0:8080->8080/tcp
nodecadvisor_node-exporter_1   /bin/node_exporter               Up             0.0.0.0:9100->9100/tcp
nodecadvisor_prometheus_1      /bin/prometheus --config.f ...   Up             0.0.0.0:9090->9090/tcp
liumiaocn:nodecadvisor liumiao$