psutil网络监视脚本

问题描述 投票:0回答:2

我正在尝试创建一个脚本来监视基本服务器资源:-CPU,RAM,磁盘和网络输入和输出(以兆字节/秒为单位)。不幸的是,尽管cpu,内存和磁盘部分正常工作,但即使有实际流量(yum update -y),网络功能也总是显示0.0字节的进出。请提供帮助,并记住我是Python的入门者,这只是一个练习项目。预先感谢。

欢迎提出任何使其更优化的建议。

#!/usr/bin/env python3
#Module psutil needs to be installed via pip3 first.
#Python script to Monitor Server Resources.

import time
import psutil

cpu_thresh = 50.0
cpu_pct = psutil.cpu_percent(interval=1)

if cpu_pct >= cpu_thresh:
    print("CPU Warning, CPU at ",cpu_pct, "percent")

mem = psutil.virtual_memory()
mem_thresh = 1024 * 1024 * 1024 #500MB

if mem_thresh >= mem.available:
    print("Memory Usage Warning only", mem.available /1024 /1024, "MB available")

partition1 = '/'
disk1 = psutil.disk_usage(partition1)
disk_thresh = 85.0

if disk_thresh <= disk1[3]:
    print("Root volume usage warning", disk1[3], "% used")

def net_in(inf = "eth0"):   #change the inf variable according to the interface
  net_in_ps = psutil.net_io_counters(pernic=True, nowrap=True)[inf]
  net_in_1 = net_in_ps.bytes_recv
  time.sleep(1)
  net_in_2 = net_in_ps.bytes_recv
  net_in_result = net_in_2 - net_in_1
  net_in_result_mbps = net_in_result /1024 /1024
  print(net_in_result_mbps)
  net_in_thresh = 1.5
  if net_in_result_mbps <= net_in_thresh:
      print("Network in Warning, NetSpeed at:", net_in_result_mbps, "mbps")

def net_out(inf = "eth0"):   #change the inf variable according to the interface
  net_out_ps = psutil.net_io_counters(pernic=True, nowrap=True)[inf]
  net_out_1 = net_out_ps.bytes_sent
  time.sleep(1)
  net_out_2 = net_out_ps.bytes_sent
  net_out_result = net_out_2 - net_out_1
  net_out_result_mbps = net_out_result /1024 /1024
  print(net_out_result_mbps)
  net_out_thresh = 1.5
  if net_out_result_mbps <= net_out_thresh:
      print("Network out Warning, NetSpeed at:", net_out_result_mbps, "mbps")
net_in()
net_out()
python psutil
2个回答
1
投票

函数仅返回0的原因是,当您在time.sleep(1)命令之后计算差值时,不会轮询接口以获取新的统计信息。您基本上是在计算1000-1000

我已经更正了您的代码,并将输出更改为兆字节而不是兆位,因为psutil返回字节,而不是位:

def net_usage(inf = "eth0"):   #change the inf variable according to the interface
    net_stat = psutil.net_io_counters(pernic=True, nowrap=True)[inf]
    net_in_1 = net_stat.bytes_recv
    net_out_1 = net_stat.bytes_sent
    time.sleep(1)
    net_stat = psutil.net_io_counters(pernic=True, nowrap=True)[inf]
    net_in_2 = net_stat.bytes_recv
    net_out_2 = net_stat.bytes_sent

    net_in = round((net_in_2 - net_in_1) / 1024 / 1024, 3)
    net_out = round((net_out_2 - net_out_1) / 1024 / 1024, 3)

    print(f"Current net-usage:\nIN: {net_in} MB/s, OUT: {net_out} MB/s")

输出:

Current net-usage:
IN: 24.263 MB/s, OUT: 0.421 MB/s

0
投票

通过添加一个非常简单的步骤设法解决了这个问题:-

  net_out_ps1 = psutil.net_io_counters(pernic=True, nowrap=True)[inf]
  net_out_1 = net_out_ps1.bytes_sent
  time.sleep(1)
  net_out_ps2 = psutil.net_io_counters(pernic=True, nowrap=True)[inf]
  net_out_2 = net_out_ps2.bytes_sent

我不得不在睡前收集一次数据,然后在睡后收集一次。很简单的基本错误。但是,如果有人可以帮助进一步优化代码,我将不胜感激。再次感谢。

© www.soinside.com 2019 - 2024. All rights reserved.