Prometheus 使用cadvisor采集docker容器监控数据

前言cadvisor

cadvisor_exporter 是一个用于将 cAdvisor 监控数据暴露给 Prometheus 的开源软件。它充当一个代理，运行在与 cAdvisor 相同的主机上，并通过查询 cAdvisor 提供的 API 来获取容器的性能指标和状态信息。

cadvisor_exporter 从 cAdvisor 收集各种容器的资源使用情况，如 CPU 利用率、内存使用量、文件系统使用情况、网络流量等，并将这些指标数据转换成 Prometheus 可以理解的格式。然后，它将这些指标数据暴露给 Prometheus，使得 Prometheus 可以定期从 cadvisor_exporter 暴露的 HTTP 端点获取数据，并将其存储、分析和可视化。

通过与 Prometheus 结合使用，cadvisor_exporter 可以帮助管理员监视和管理容器集群中各个容器的性能和状态。管理员可以使用 Prometheus 查询语言构建自定义的监控规则和警报条件，以便在容器出现问题或性能异常时及时发出警报。

download cadvisor

• cadvisor采集数据
• docker 方式部署cadvisor
• 端口 8082
• 安装目录/opt/cadvisor

 cadvisor 一键安装监控脚本 

vim /cadvisor_install.sh

#!/bin/bash
# -*- coding: utf-8 -*-
# Author: make.han 
# Email: CIASM@CIASM
# Date: 2024/01/16
 
OPT_CATALOGUE=/opt
CADVISOR_EXPORTER_PREFIX=/opt/cadvisor
CADVISOR_EXPORTER_URL=https://github.com/google/cadvisor/releases/download/v0.47.2/cadvisor-v0.47.2-linux-amd64
CADVISOR_EXPORTER_BINARY=cadvisor-v0.47.2-linux-amd64
CADVISOR_EXPORTER_NEW=cadvisor
CADVISOR_EXPORTER_PORT=8082
 
install_cadvisor_exporter (){
if [ ! -d ${CADVISOR_EXPORTER_PREFIX} ];then
 
# selinux stop
setenforce 0
sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
 
 if [ $? -eq 0 ];then
 
# create directory
mkdir -p $CADVISOR_EXPORTER_PREFIX
 
echo "download cadvisor"
wget -N -P $CADVISOR_EXPORTER_PREFIX $CADVISOR_EXPORTER_URL
 
echo "Compile and install & config"
mv $CADVISOR_EXPORTER_PREFIX/$CADVISOR_EXPORTER_BINARY  $CADVISOR_EXPORTER_PREFIX/$CADVISOR_EXPORTER_NEW
 
# Grant execution permission
chmod +x $CADVISOR_EXPORTER_PREFIX/$CADVISOR_EXPORTER_NEW
 
# cadvisor environment variable
sed -i '$aexport CADVISOR_HOME='$CADVISOR_EXPORTER_PREFIX'' /etc/profile
sed -i '$aexport PATH=\$CADVISOR_HOME/:\$PATH' /etc/profile
source /etc/profile	
 
echo "cadvisor Start Service"
cat >>/usr/lib/systemd/system/cadvisor.service<
[Unit]
Description=cadvisor
Documentation=https://github.com/google/cadvisor/tree/master/docs
After=network.target
 
[Service]
Type=simple
ExecStart=$CADVISOR_EXPORTER_PREFIX/$CADVISOR_EXPORTER_NEW -port $CADVISOR_EXPORTER_PORT
Restart=on-failure
 
[Install]
WantedBy=multi-user.target
EOF
 
echo " cadvisor Example Set the automatic startup service"
systemctl daemon-reload
systemctl enable --now cadvisor
 
# cadvisor version
cadvisor -version | awk '{print $3}'
 
echo "firewall cadvisor_exporter port"
firewall-cmd --zone=public --add-port=$CADVISOR_EXPORTER_PORT/tcp --permanent && firewall-cmd --reload 
 
    echo -e "\033[32mThe cadvisor_exporter Install Sussess...\033[0m" 
   else
    echo -e "\033[33mThe cadvisor_exporter Install Failed...\033[0m" 
    exit 1
   fi
   else
    echo -e "\033[31mThe cadvisor_exporter Install already...\033[0m"
fi
}
 
main (){
	install_cadvisor_exporter
}
 
main

执行部署

bash /cadvisor_install.sh

页面访问

• http://YOU_IP:8082 

Prometheus 数据采集配置

scrape_configs:
  - job_name: 'web' 
    scrape_interval: 5s
    static_configs: 
      - targets: 
        - localhost:9090
 
  - job_name: 'docker-cadvisor-monitoring'
    scrape_interval: 5s
    static_configs:
      - targets:
        - 192.168.11.230:8082

Grafana图形展示

第一种图形Import>13631>Prometheus

• 模板下载

第二种图形Import>11600>Prometheus

• 模板下载

第三种图形Import>13496>Prometheus

• 模板下载
• grafana 版本要求7.3.4

第四种种图形Import>18351>Prometheus

• 模板下载
• grafana 版本要求9

 第五种种图形Import>19908>Prometheus

• 模板下载
• grafana 版本要求10