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()
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
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。