使用 Python 创建一个系统监控程序
最近在做个人网站，但是由于服务器资源不足，偶尔会出现系统崩溃的现象，所以想写一个程序来实时监控系统状态。当系统资源占用过高时发送邮件提醒。
psutil（进程和系统实用程序）是一个跨平台的库，用于检索 Python中有关正在运行的进程和系统利用率（CPU，内存，磁盘，网络，传感器）的信息。它主要用于系统监视，概要分析和限制进程资源以及管理正在运行的进程。
1、安装psutilpip3 install psutil # python2用户直接使用pip install psutil
2、创建get_system_info.py文件，获取系统状
1 import psutil as p
2
3
4 def memory(): # 获取内存信息
5 info = p.virtual_memory()
6 return info[2]
7
8
9 def disk(): # 获取磁盘使用情况
10 info = p.disk_usage(’/’)
11 return info[-1], info[-2]
12
13
14 def cpu(): # 获取CPU使用率
15 info = p.cpu_percent(1)
16 return info# 在此只使用了博主所需的相关功能，详细说明见 https://pypi.org/project/psutil/3、创建邮件发送send_Email.py文件
1 import smtplib
2 from email.header import Header
3 from email.mime.text import MIMEText
4 from email.utils import formataddr
5
6
7 class send_Email():
8 def init(self, mail_host, mail_port, mail_user, mail_pass, sender):
9 self.mail_host = mail_host
10 self.mail_port = mail_port
11 self.mail_user = mail_user
12 self.mail_pass = mail_pass
13 self.sender = sender
14
15 def make_mail(self, title, code, receiver): # 生成邮件
16 mail_msg = “”"
17
%s
18
%s
19 “”" % (title, code)
20 self.message = MIMEText(mail_msg, “html”, “utf-8”)
21 self.message[‘From’] = formataddr([“XX”, self.sender])
22 self.message[‘To’] = formataddr([“User”, receiver])
23 subject = title
24 self.message[‘Subject’] = Header(subject, “utf-8”)
25
26 def send(self, receiver, title, code): # 发送邮件
27 status = 0
28 self.make_mail(title, code, receiver)
29 try:
30 self.smtpObj = smtplib.SMTP_SSL(self.mail_host, self.mail_port)
31 # print(1)
32 self.smtpObj.login(self.mail_user, self.mail_pass)
33 # print(2)
34 self.smtpObj.sendmail(self.sender, [receiver], self.message.as_string())
35 self.smtpObj.quit()
36 status = 1
37 except smtplib.SMTPException as e:
38 print(“Error！ 无法发送邮件！！！” + e)
39 return status4、整合代码from send_Email import send_Emailimport get_system_info as gsiemail = send_Email(“smtp.163.com”, 465, “ @.com", " ", “*****@.com”) # 初始化memory = gsi.memory()disk, capacity = gsi.disk()info = str(memory)+" “+str(disk)+” "+str(round(capacity/1024/1024/1024, 2))email.send(code=info, title=“系统状态异常”, receiver=" @ .")status_d = 0status_m = 0while True: # 实时检测系统状态，会占用一定的系统资源
memory = gsi.memory()
disk, capacity = gsi.disk()
if memory >= 80 and status_m == 0: status_m = 1
data = “当前内存占用率为”+str(memory)+"%，建议清理或扩充内存！" email.send(code=data, title=“系统状态异常”, receiver=" @ .")
elif memory < 80:
status_m = 0 if disk >= 80 and status_d == 0: status_d = 1
data = “当前硬盘已使用”+str(disk)+"%，剩余"+str(round(capacity/1024/1024/1024, 2))+“GB，请及时扩充！” email.send(receiver=" @. ", title=“系统状态异常”, code=data)
elif disk < 80:
status_d = 0 if memory >= 90 and status_m == 1:
status_m = 2
data = “当前内存占用率为”+str(memory)+"%，建议清理或扩充内存！" email.send(code=data, title=“系统状态异常”, receiver=" @. ")
elif memory < 90:
status_m = 1 if disk >= 90 and status_d == 1:
status_d = 2
data = “当前硬盘已使用”+str(disk)+"%，剩余"+str(round(capacity/1024/1024/1024, 2))+“GB，请及时扩充！” email.send(receiver=" @.*”, title=“系统状态异常”, code=data) elif disk < 90:
status_d = 1
程序仍有不足之处，请各位多多指教