grafana监控docker性能:cadvisor+prometheus+grafana

1.cAdvisor是什么

cAdvisor是专门用来采集数据的工具。

cadvisor使用流程

2.Docker下cadvisor环境安装

1.拉取官方镜像google/cadvisor
[root@ecs-429b ~]$>docker pull google/cadvisor

2.创建容器google/cadvisor
[root@ecs-429b ~]$>docker run -itd --volume=/:/rootfs:ro --volume=/var/run:/var/run:ro --volume=/sys:/sys:ro --volume=/var/lib/docker/:/var/lib/docker:ro --volume=/dev/disk/:/dev/disk:ro --publish=8081:8080 --detach=true --name=cadvisor google/cadvisor

3.Docker下prometheus环境安装

更多prometheus的详细内容，参考网址：https://www.jianshu.com/writer#/notebooks/50037693/notes/87166367

1.拉取prom/prometheus镜像
[root@ecs-429b ~]$> docker pull prom/prometheus
2.创建prometheus目录，新增prometheus.yml文件，用于指定设置docker地址:mkdir -p /opt/prometheus、vi /opt/prometheus/prometheus.yml
3.创建prometheus容器，指定端口、名称、挂载目录、设置时区:
docker run -itd --name prometheus -p 9090:9090
-v /opt/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
-v /etc/localtime:/etc/localtime:ro
prom/prometheus

>4.修改配置文件后，重启prometheus，即重启服务就是重启容器：docker restart prometheus
>对应第二步，新建yaml文件并修改：vi /opt/prometheus/prometheus.yml
global:
  scrape_interval:     60s
  evaluation_interval: 60s
scrape_configs:
  - job_name: prometheus
    static_configs:
      - targets: ['172.17.0.1:9090']  #dokcer安装的宿主机对应的ip，比如10.100.10.15
        labels:
          instance: prometheus
  - job_name: linux
    static_configs:
      - targets: ['172.17.0.1:9100'] #dokcer安装的宿主机对应的ip，比如10.100.10.15
  - job_name: mysql
    static_configs:
      - targets: ['172.17.0.1:9104'] #dokcer安装的宿主机对应的ip，比如10.100.10.15
  - job_name: 'cadvisor'
    static_configs:
      - targets: ['172.17.0.1:8081'] #dokcer安装的宿主机对应的ip，比如10.100.10.15

>对应第三步，创建prometheus并创建容器
docker run -itd --name prometheus -p 9090:9090  \
  -v /opt/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml  \
  -v /etc/localtime:/etc/localtime:ro \
  prom/prometheus

4.Docker下grafana环境安装

grafana容器搭建操作步骤
1.创建grafana目录：
mkdir -p /opt/grafana/data
chmod 777 /opt/grafana/data
2.拉取官方的grafana镜像：docker pull grafana/grafana
3.运行容器，端口映射，用于外网访问：

docker run -itd  --name=grafana  -p 3000:3000  \
  -v /opt/grafana/data:/var/lib/grafana  \
  -v /etc/localtime:/etc/localtime:ro \
  grafana/grafana

4.进入容器：docker exec -it e7eeb8be6171 /bin/bash
5.输入对应的网址+端口，访问容器，用户名/密码的默认值为admin/admin：http://10.100.10.16:3000/login

搭建成功显示界面

5.grafana监控Docker

配置监控源

配置prometheus数据源

Docker监控界面