Python脚本，用于监视服务的systemctl状态，如果返回false，则通过sendmail发送电子邮件

import subprocess
import smtplib
from email.mime.text import MIMEText

def check_service_status(service_name):
    try:
        # 调用systemctl命令获取服务状态
        result = subprocess.run(['systemctl', 'is-active', service_name], capture_output=True, text=True)
        status = result.stdout.strip()
        if status == 'active':
            return True
        else:
            return False
    except Exception as e:
        print(f"Error checking service status: {e}")
        return False

def send_email(subject, body, sender, receiver, smtp_server, smtp_port, smtp_username, smtp_password):
    try:
        # 创建邮件内容
        message = MIMEText(body)
        message['Subject'] = subject
        message['From'] = sender
        message['To'] = receiver

        # 连接SMTP服务器并发送邮件
        with smtplib.SMTP(smtp_server, smtp_port) as server:
            server.login(smtp_username, smtp_password)
            server.sendmail(sender, receiver, message.as_string())
        print("Email sent successfully")
    except Exception as e:
        print(f"Error sending email: {e}")

if __name__ == "__main__":
    service_name = "your_service_name"
    sender = "sender@example.com"
    receiver = "receiver@example.com"
    smtp_server = "smtp.example.com"
    smtp_port = 587
    smtp_username = "your_smtp_username"
    smtp_password = "your_smtp_password"

    if not check_service_status(service_name):
        subject = "Service Status Alert"
        body = f"The service {service_name} is not active"
        send_email(subject, body, sender, receiver, smtp_server, smtp_port, smtp_username, smtp_password)