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。