python监控服务器应用日志,实时关注日志异常

文章资讯 2020-07-19 14:28:29

python监控服务器应用日志,实时关注日志异常

简简单单写个python脚本来监控服务器日志就简单多了,废话不多说,直接上脚本。
主要逻辑:
1. 使用python的subprocess模块,执行shell命令,“tail -f” 来监听日志文件
2. 对输出的日志文件,逐行比对字符串,如果匹配到预设的字符串则开始记录,keywords中配置需要预设的异常字符串
3. 开始记录日志至数组中,可通过rows来预设记录多少条,达到规定数量后
4. 将日志内容通过http发送给钉钉服务器,钉钉机器人就会在群里通知我们啦
简单,高效,实时
#!/usr/bin/python
# encoding=utf-8
# Filename: monitorLog.py
import os
import signal
import subprocess
import time
import smtplib
from email.mime.text import MIMEText
from email.header import Header
import requests
import json
import threading
serverName="prod:192.168.100.20"
#日志文件路径地址
logFiles =[
"/opt/app/mall/mall-admin/logs/mall-admin-0.0.1-SNAPSHOT.log",
"/opt/app/mall/mall-portal/logs/mall-portal-0.0.1-SNAPSHOT.log"
];
#机器人回调地址 , 钉钉群里添加一个机器人就可以了
webhook = 'https://oapi.dingtalk.com/robot/send?access_token=38670255eb92cd3a8ce94732fd785dc753134fc1c4d69141f56e942a5d453e5b'
#日志缓存数据
logs = []
#记录日志行数,从匹配行开始记录,到达数量就用推给钉钉机器人
rows = 2
# 是否开始记录日志标记位
recordFlags = []
# 检测的关键字数组,大小写敏感
keywords = []
keywords.append("threw exception")
keywords.append("java.lang.NullPointerException")
keywords.append("com.macro.mall.exception.ApiRRException")
keywords.append("SocketTimeoutException")
#消息内容,url地址
def dingtalk(msg,webhook):
headers = {'Content-Type': 'application/json; charset=utf-8'}
data = {'msgtype': 'text', 'text': {'content': msg}, 'at': {'atMobiles': [], 'isAtAll': False}}
post_data = json.dumps(data)
response = requests.post(webhook, headers=headers, data=post_data)
return response.text

# 检查行
def checkLine(line, index):
curLog = logs[index]
if recordFlags[index]==1:
curLog.append(line)
if len(curLog)>rows:
content = "n".join('%s' %id for id in curLog)
print(content)
dingtalk(content,webhook)
recordFlags[index] = 0
logs[index]=[]
else:
for keyword in keywords:
if keyword in line:
recordFlags[index] = 1
curLog.append(serverName)
curLog.append(logFiles[index])
curLog.append(line)
break
#日志文件一般是按天产生,则通过在程序中判断文件的产生日期与当前时间,更换监控的日志文件
#程序只是简单的示例一下,监控test1.log 10秒,转向监控test2.log
def monitorLog(logFile, index):
#print('监控的日志文件 是%s' % logFile)
popen = subprocess.Popen('tail -f ' + logFile, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
pid = popen.pid
print('Popen.pid:' + str(pid))
while True:
line = popen.stdout.readline().strip()
# 判断内容是否为空
if line:
#print line
checkLine(str(line), index)
if __name__ == '__main__':
for index, logFile in enumerate(logFiles):
logs.append([])
recordFlags.append(0)
tt = threading.Thread(target=monitorLog,args=(logFile,index))
tt.start()
print ("monitor:"+str(logFile))