本文实例为大家分享了python脚本监控docker容器的方法，供大家参考，具体内容如下

脚本功能：

1、监控CPU使用率

2、监控内存使用状况

3、监控网络流量

具体代码：

#!/usr/bin/env python

# --*-- coding:UTF-8 --*--

import sys

import tab

import re

import os

import time

from docker import Client

import commands

keys_container_stats_list = ['blkio_stats', 'precpu_stats', 'Network', 'read', 'memory_stats', 'cpu_stats']

merit_list=['usage','limit','mem_use_percent','total_cpu_usage','system_cpu_usage','cpu_usage_percent','rx_bytes','tx_bytes']

returnval = None

def start(container_name):

global container_stats

conn=Client(base_url='unix://run/docker.sock',version='1.19')

generator=conn.stats(container_name)

try:

container_stats=eval(generator.next())

except NameError,error_msg:

pass

# print error_msg

container_stats=eval(generator.next())

finally:

conn.close()

def monitor_docker(monitor_item,merit):

if merit == 'mem_use_percent':

start(container_name)

mem_usage = container_stats['memory_stats']['usage']

mem_limit = container_stats['memory_stats']['limit']

returnval = round(float(mem_usage) / float(mem_limit),2)

print returnval

elif merit == 'system_cpu_usage':

start(container_name)

first_result = container_stats['cpu_stats']['system_cpu_usage']

start(container_name)

second_result = container_stats['cpu_stats']['system_cpu_usage']

returnval = second_result - first_result

print returnval

elif merit == 'total_cpu_usage':

start(container_name)

first_result = container_stats['cpu_stats']['cpu_usage']['total_usage']

start(container_name)

second_result = container_stats['cpu_stats']['cpu_usage']['total_usage']

returnval = second_result - first_result

print returnval

elif merit == 'cpu_usage_percent':

start(container_name)

system_use=container_stats['cpu_stats']['system_cpu_usage']

total_use=container_stats['cpu_stats']['cpu_usage']['total_usage']

cpu_count=len(container_stats['cpu_stats']['cpu_usage']['percpu_usage'])

returnval = round((float(total_use)/float(system_use))*cpu_count*100.0,2)

print returnval

elif merit == 'rx_bytes':

command='''docker exec -it api1 ifconfig eth1 | grep "bytes" | awk '{print $2}' | awk -F ':' '{print $2}' '''

result_one = commands.getoutput(command)

time.sleep(1)

command='''docker exec -it api1 ifconfig eth1 | grep "bytes" | awk '{print $2}' | awk -F ':' '{print $2}' '''

result_second = commands.getoutput(command)

returnval = round((int(result_second) - int(result_one))/1024,2)

print returnval

elif merit == 'tx_bytes':

command='''docker exec -it api1 ifconfig eth1 | grep "bytes" | awk '{print $6}' | awk -F ':' '{print $2}' '''

result_one = commands.getoutput(command)

time.sleep(1)

command='''docker exec -it api1 ifconfig eth1 | grep "bytes" | awk '{print $6}' | awk -F ':' '{print $2}' '''

result_second = commands.getoutput(command)

returnval = round((int(result_second) - int(result_one))/1024,2)

print returnval

if __name__ == '__main__':

command='''docker ps | awk '{print $NF}'| grep -v "NAMES"'''

str=commands.getoutput(command)

container_counts_list=str.split('\n')

if sys.argv[1] not in container_counts_list:

print container_counts_list

print "你输入的容器名称错误，请重新执行脚本，并输入上述正确的容器名称."

sys.exit(1)

else:

container_name = sys.argv[1]

if sys.argv[2] not in keys_container_stats_list:

print keys_container_stats_list

print '你输入的容器监控项不在监控范围，请重新执行脚本，并输入上述正确的监控项.'

sys.exit(1)

else:

monitor_item = sys.argv[2]

if sys.argv[3] not in merit_list:

print merit_list

print "你输入的容器监控明细详细不在监控范围内，请重新执行脚本，并输入上述正确的明细监控指标."

else:

merit = sys.argv[3]

monitor_docker(monitor_item,merit)

以上就是python脚本监控docker容器的全部代码，希望对大家的学习有所帮助。

本文标题: python脚本监控docker容器

本文地址: http://www.cppcns.com/jiaoben/python/148494.html