使用 cAdvisor 主机上的容器

目录

• 前言
• 安装测试
  • 安装 docker
  • 安装docker-ce
  • 启动 cAdvisor 容器
  • 访问测试
  • prometheus 服务端配置
    • 使用 promtool 检查配置文件
    • 重新加载配置文件

前言

官方地址：https://github.com/google/cadvisor

CAdvisor 是谷歌开发的用于分析运行中容器的资源占用和性能指标的开源工具。
CAdvisor 是一个运行时的守护进程，负责收集、聚合、处理和输出运行中容器的信息。

基于 Prometheus 安装文章进行的试验。

安装测试

安装 docker

配置docker的yum源

[root@es01 ~]# cat /etc/yum.repos.d/docker-ce.repo 
[docker-ce-stable]
name=Docker CE Stable - $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/$basearch/stable
enabled=1
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-stable-debuginfo]
name=Docker CE Stable - Debuginfo $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-$basearch/stable
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-stable-source]
name=Docker CE Stable - Sources
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/source/stable
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-edge]
name=Docker CE Edge - $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/$basearch/edge
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-edge-debuginfo]
name=Docker CE Edge - Debuginfo $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-$basearch/edge
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-edge-source]
name=Docker CE Edge - Sources
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/source/edge
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-test]
name=Docker CE Test - $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/$basearch/test
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-test-debuginfo]
name=Docker CE Test - Debuginfo $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-$basearch/test
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-test-source]
name=Docker CE Test - Sources
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/source/test
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-nightly]
name=Docker CE Nightly - $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/$basearch/nightly
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-nightly-debuginfo]
name=Docker CE Nightly - Debuginfo $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-$basearch/nightly
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-nightly-source]
name=Docker CE Nightly - Sources
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/source/nightly
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

安装docker-ce

yum install docker-ce -y

启动

systemctl start docker

启动 cAdvisor 容器

docker run \
  --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=8090:8080 \
  --detach=true \
  --name=cadvisor \
  google/cadvisor:latest

查看容器状态

[root@es01 ~]# docker ps -a
CONTAINER ID        IMAGE                    COMMAND                  CREATED             STATUS              PORTS                    NAMES
70f072038935        google/cadvisor:latest   "/usr/bin/cadvisor -…"   3 days ago          Up 3 days           0.0.0.0:8080->8080/tcp   cadvisor

[root@es01 ~]# netstat -lntup | grep 8080
tcp6       0      0 :::8080                 :::*                    LISTEN      9758/docker-proxy

访问测试

通过 http://ip:port 进行访问:

prometheus 服务端配置

编辑 prometheus.yml 配置文件，在 scripe_configs 下添加下面内容:

  - job_name: 'cadvisor'
    metrics_path: '/metrics'
    static_configs:
    - targets: ['10.0.20.11:8080']

使用 promtool 检查配置文件

[root@es01 config]# /opt/prometheus-2.14/bin/promtool check config /opt/prometheus-2.14/config/prometheus.yml
Checking /opt/prometheus-2.14/config/prometheus.yml
  SUCCESS: 0 rule files found

重新加载配置文件

curl -X POST http://10.0.20.11:9090/-/reload

访问测试: