Zabbix 监控 Docker容器

Posted 2020-10-22 nat_zhu

我们可以通过Python提供的模块docker来取各个docker容器的监控参数。参考文档：http://docker-py.readthedocs.io/en/stable/containers.html

pip install docker     #安装docker模块

通过脚本获取各个监控项的值

#!coding=utf-8
#python2.7.12测试通过

#监控docker状态脚本，包括内存、cpu和网速

#UserParameter=docker_monitor[*],/usr/bin/python /usr/local/zabbix/scripts/docker_monitor.py $1 $2

import docker
import sys

def get_value(item):
    mem_rss_usage = docker_stat[‘memory_stats‘][‘stats‘][‘total_rss‘]
    mem_cache_usage = docker_stat[‘memory_stats‘][‘stats‘][‘total_cache‘]
    mem_limit = docker_stat[‘memory_stats‘][‘limit‘]
    cpu_total_usage = docker_stat[‘cpu_stats‘][‘cpu_usage‘][‘total_usage‘]
    cpu_usermode_usage = docker_stat[‘cpu_stats‘][‘cpu_usage‘][‘usage_in_usermode‘]
    cpu_kernelmode_usage = docker_stat[‘cpu_stats‘][‘cpu_usage‘][‘usage_in_kernelmode‘]
    cpu_system_usage = docker_stat[‘cpu_stats‘][‘system_cpu_usage‘]
    percpu_usage = docker_stat[‘cpu_stats‘][‘cpu_usage‘][‘percpu_usage‘]
    #      ‘cpu_percent‘: round(((float(cpu_total_usage)+float(cpu_usermode_usage)+float(cpu_kernelmode_usage))/float(cpu_system_usage)) * len(percpu_usage) * 1000.0, 2),    暂不确定
    items = {
        ‘mem_rss_usage‘: mem_rss_usage,
        ‘mem_cache_usage‘: mem_cache_usage,
        ‘mem_limit‘: mem_limit,
        ‘cpu_total_usage‘: cpu_total_usage,
        ‘cpu_system_usage‘: cpu_system_usage,
        ‘mem_percent‘: round((float(mem_rss_usage)/float(mem_limit)) * 100.0, 2),
        ‘status‘: int( docker.status == ‘running‘)
    }
    print items.get(item)

if __name__ == ‘__main__‘:

    conn = docker.from_env()
    docker = conn.containers.get(sys.argv[1])
    docker_stat = docker.stats(stream=False,decode=True)

    get_value(sys.argv[2])

docker自动发现脚本：

#!/bin/bash


docker_amount() {
            port=($(sudo docker ps -a|grep -v "CONTAINER ID"|awk ‘{print $NF}‘))
            printf ‘{\n‘
            printf ‘\t"data":[\n‘
               for key in ${!port[@]}
                   do
                       if [[ "${#port[@]}" -gt 1 && "${key}" -ne "$((${#port[@]}-1))" ]];then
                          printf ‘\t {\n‘
                          printf "\t\t\t\"{#CONTAINERNAME}\":\"${port[${key}]}\"},\n"

                     else [[ "${key}" -eq "((${#port[@]}-1))" ]]
                          printf ‘\t {\n‘
                          printf "\t\t\t\"{#CONTAINERNAME}\":\"${port[${key}]}\"}\n"

                       fi
               done

                          printf ‘\t ]\n‘
                          printf ‘}\n‘
}

case $1 in
docker)
    docker_amount
;;
*)
    echo "Usage:`basename $0` {docker}"
;;
esac

　　

UserParameter=auto_discovery[*],/bin/bash /usr/local/zabbix/scripts/auto_discovery.sh $1

　如果在服务端执行zabbix_get时报权限错误，在/etc/sudoers中添加：

zabbix  ALL=(root)  NOPASSWD: /usr/bin/docker

然后在监控页添加自动发现、监控项即可。

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另可用简单的Load Modules的方式监控Docker(感谢万能的先行者....)

Git地址：https://github.com/monitoringartist/Zabbix-Docker-Monitoring

步骤如下：

1、在Git上下载相应版本的加载模块zabbix_module_docker.so和相应监控方式（主动和被动）监控模板Zabbix-Template-App-Docker.xml

2、将zabbix_module_docker.so放在${libdir}/modules下并修改配置文件：

LoadModulePath=/usr/local/zabbix/lib/modules

LoadModule=zabbix_module_docker.so

3、重启zabbix_agentd，并将Zabbix-Template-App-Docker.xml导入模板中，自动发现10分钟后取得数据