python 监控日志并发送邮件报警
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#!/usr/bin/env python #coding:utf8 import re import os import time import smtplib import socket import fcntl import struct from email.mime.text import MIMEText def get_ip_address(ifname): s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) return socket.inet_ntoa(fcntl.ioctl( s.fileno(), 0x8915, # SIOCGIFADDR struct.pack(‘256s‘, ifname[:15]) )[20:24]) def sendemail(subject,msg,fromemail,emailpasswd,toemail): ‘‘‘实现发送邮件功能函数‘‘‘ _user = fromemail _pwd = emailpasswd _to = toemail nowtime = time.strftime(‘%Y-%m-%d %H:%M:%S‘) msg = MIMEText(msg) msg["Subject"] = subject msg["From"] = _user msg["To"] = _to try: s = smtplib.SMTP_SSL(‘smtp.qq.com‘, 465) s.login(_user, _pwd) s.sendmail(_user, _to, msg.as_string()) s.quit() print "[%s]INFO:Email send Success!" % nowtime except smtplib.SMTPException,e: print "[%s]ERROR:Email send Falied,%s" % (nowtime,e) def matchkeyword(pattern,alertlogfile): ‘‘‘实现匹配关键字函数‘‘‘ re.compile(pattern) posfile = "/tmp/posfile" if not os.path.exists(posfile): os.mknod(posfile) if not os.path.getsize(posfile): with open(posfile,‘w‘) as fobj: fobj.write(‘0‘) #打开文件 f = open(alertlogfile,‘r‘) #移动到文件结尾 f.seek(0,2) #读出文件所在的字节位置 endpos = f.tell() #移动到文件的开头 with open(posfile,‘r‘) as fobj: startpos = int(fobj.read()) f.seek(startpos) if endpos-startpos > 0: data = f.read(endpos-startpos) f.close() with open(posfile,‘w‘) as fobj: fobj.write(str(endpos)) m = re.findall(pattern, data,re.IGNORECASE) if m: content = ‘\n‘.join(m) return content else: return ‘‘ if __name__ == ‘__main__‘: local_ip = get_ip_address(‘eth0‘) subject = ‘服务器[%s]日志报警了!‘ % local_ip fromemail = ‘[email protected]‘ #emailpasswd为QQ邮箱的授权码 emailpasswd = ‘mdkuasfhnjbrbhdj‘ toemail = ‘[email protected]‘ alertlogfile = "/data/mysql/mysql_3306/log/error.log" #pattern = ".*\[Warning\].*\s|.*\[Note\].*\s" pattern = ".*Warning.*\s|.*error.*\s" while True: content = matchkeyword(pattern, alertlogfile) if content: sendemail(subject, content, fromemail, emailpasswd, toemail)
此脚本启动后,会一直监控error.log,如果发现有warning,error关键字,则会将这一行的信息做为邮件正文发送到指定邮箱。
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