cAdvisor + Prometheus + Grafana

写在前面

cAdvisor：google开源的一个docker container监控工具，自带web ui，并支持导出到prometheus、influxdb等存储；

prometheus + grafana安装看这里。

安装配置

cAdvisor

1. 配置用户名密码
   为cAdvisor web ui生成认证文件auth.htpasswd,用户http basic认证:

   yum install -y httpd-tools
   htpasswd -b -c auth.htpasswd user1 password1
   

2. docker-compose配置
   将auth.htpasswd与docker-compose.yml放到同一目录下:

   version: '3.3'
   services:
    cadvisor:
     image: google/cadvisor:v0.33.0
     ports:
       - "8030:8080"
     volumes:
       - /:/rootfs:ro
       - /var/run:/var/run:rw
       - /sys:/sys:ro
       #- /var/lib/docker/:/var/lib/docker:ro
       - /apps/data/docker/:/var/lib/docker:ro
       - /dev/disk/:/dev/disk:ro
       - /cgroup:/cgroup:ro
       - ./auth.htpasswd:/etc/auth.htpasswd
     command:
       - '--http_auth_file=/etc/auth.htpasswd'
     privileged: true
     devices:
       - /dev/kmsg
   

3. 启动并验证
   docker-compose up -d启动，浏览器访问cAdvisor web uihttp://{host}:8030，输入用户名密码登录，可以看到如下界面:

image-20230316151046713.png

4. 每台宿主机分别启动cAdvisor

Prometheus

prometheus.yml添加job，指向cAdvisorhttp地址:

scrape_configs:
  - job_name: 'cadvisor_docker_exporter'
    static_configs:
      - targets:
        - 192.168.0.182:8030
        - 192.168.1.10:8030
        - 192.168.3.220:8030

Grafana

1. 导入dashboard模板
   docker-container.json
2. 查看效果

image-20230316151944037.png