python实时监控logstash日志代码

实时读取logstash日志，有异常错误keywork即触发报警。

# /usr/bin/env python3
# -*- coding: utf-8 -*-
# __author__ = caozhi
# create_time 2018-11-12,update_time 2018-11-15
# version = 1.0
# 录像高可用报警
# 1 读取日志 使用游标移动
# 2 线上业务日志文件会切割，切割后，读取上一个切割的日志

import os
import sys
import json
import requests
import time
import re

cini = conf.ini'
log_file = logstash.log'

def readconf():
try:
with open(cini, 'r+') as f:
 CONF = json.load(f)
except:
CONF = {"seek": 0, "inode": 922817, "last_file": logstash.log"}
writeconf(CONF=CONF)
print('conf.ini 配置文件缺失，自动创建一个新的配置文件')
return CONF

def writeconf(CONF):
with open(cini, 'w+') as e:
json.dump(CONF, e)

def read_log(log_file, seek):
try:
f = open(log_file, 'r')
except FileNotFoundError:
f = open(logstash.log', 'r')
seek = 0
print('上一个文件读取失败了，请检查切割的日志文件')
except:
print('日志文件打开错误，退出程序')
sys.exit()

f.seek(seek)
line = f.readline()
new_seek = f.tell()
if new_seek == seek:
print('没有追加日志，退出程序')
sys.exit()

while line:
try:
logstash = json.loads(line)
except:
CONF = {"seek": 0, "inode": 922817, "last_file": "/data/logs/lmrs/logstash.log"}
writeconf(CONF=CONF)
print('json数据加载错误，重新创建一个新的配置文件')
sys.exit()

#if '''re.search(time.strftime("％Y:％H:％M", time.localtime()), logstash.get('log_time')) and '''logstash.get('rtype') == 6 and logstash.get('uri') == '/publish' and logstash.get('event') == 0:
if logstash.get('rtype') == 6 and logstash.get('uri') == '/publish' and logstash.get('event') == 0:
value = 1
stream = logstash.get('name')
print('{} {}'.format(value, stream))
record(value=value, stream=stream)
else:
value = 0
stream = 0
line = f.readline()
seek = f.tell()
f.close
return value, stream, seek

def record(value, stream):
data = []
record = {}
record['metric'] = 'recording_high_availability_monitor'
record['endpoint'] = os.uname()[1]
record['timestamp'] = int(time.time())
record['step'] = 60
record['value'] = value
record['counterType'] = 'GAUGE'
record['Tags'] = '{}={}'.format(int(time.time()), stream)
data.append(record)

if data:
print('这是data的json数据')
print(data)
falcon_request = requests.post("http://127.0.0.1:1988/v1/push", data=json.dumps(data))
#falcon_request = requests.post("http://127.0.0.1:1988/v1/push", json=data)
print('json参数请求返回状态码为：' + str(falcon_request.status_code))
print('json参数请求返回为：' + str(falcon_request.text))

if __name__ == '__main__':
print()
print('***************************************')
print('本次执行脚本时间：{}'.format(time.strftime("％Y％m％d_％H％M", time.localtime())))
CONF = readconf()
print('first_CONF :{}'.format(CONF))
print('NO1.log_file',log_file)
last_inode = CONF['inode']
inode = os.stat(log_file).st_ino
print('last_inode: {} inode: {}'.format(last_inode, inode))

if inode == last_inode:
seek = CONF['seek']
next_file = 0
else:
log_file = CONF['last_file'] + time.strftime("-％Y％m％d_", time.localtime()) + str(time.strftime("％H％M", time.localtime()))[:-1] + '0'
next_file = 1
seek = CONF['seek']

print('NO2.log_file',log_file)
value, stream, seek = read_log(log_file=log_file,seek=seek)

if next_file:
CONF['seek'] = 0
else:
CONF['seek'] = seek

CONF['inode'] = os.stat(logstash.log').st_ino
writeconf(CONF=CONF)
print('last_CONF :{}'.format(CONF))

补充知识：logstash 调用exec

我就废话不多说了，还是直接看代码吧！

[elk@Vsftp logstash]$ cat t3.conf
input {
stdin {
}
}
filter {
grok {
match => [ "message","(?m)\s*％{TIMESTAMP_ISO8601:time}\s*(?<Level>(\S+)).*"]
}
date {
match => ["time", "yyyy-MM-dd HH:mm:ss,SSS"]
}
mutate {
  add_field =>["type","tailong"]
  add_field =>["messager","％{type}-％{message}"]
  remove_field =>["message"]
 }
}
output {
if ([Level] == "ERROR" or [messager] =~ "Exception" ) and [messager] !~ "温金服务未连接" and [messager] !~ "调用温金代理系统接口错误" and [messager] !~ "BusinessException" {
exec {
 command => "/bin/smail.pl \"％{messager}\" \"％{type}\" "
}
}
stdout {
codec =>rubydebug
}
}

Vsftp:/root# cat /bin/smail.pl
#!/usr/bin/perl
use Net::SMTP;
use HTTP::Date qw(time2iso str2time time2iso time2isoz);
use Data::Dumper;
use Getopt::Std;
use vars qw($opt_d );
getopts('d:');
# mail_user should be your_mail@163.com
$message= "@ARGV";
$env="$opt_d";
sub send_mail{
my $CurrTime = time2iso(time());
my $to_address = shift;
my $mail_user = 'zhao.yangjian@163.com';
my $mail_pwd = 'xx';
my $mail_server = 'smtp.163.com';

my $from = "From: $mail_user\n";
my $subject = "Subject: zjcap info\n";
my $info = "$CurrTime--$message";
my $message = <<CONTENT;
$info
CONTENT
my $smtp = Net::SMTP->new($mail_server);

$smtp->auth($mail_user, $mail_pwd) || die "Auth Error! $!";
$smtp->mail($mail_user);
$smtp->to($to_address);

$smtp->data();  # begin the data
$smtp->datasend($from); # set user
$smtp->datasend($subject); # set subject
$smtp->datasend("\n\n");
$smtp->datasend("$message\n"); # set content
$smtp->dataend();
$smtp->quit();
};

send_mail ('zhao.yangjian@163.com');

2017-01-12 10:19:19,888 jjjjj Exception
{
"@version" => "1",
"@timestamp" => "2017-01-12T02:19:19.888Z",
 "host" => "Vsftp",
 "time" => "2017-01-12 10:19:19,888",
 "Level" => "jjjjj",
 "type" => "tailong",
"messager" => "tailong-2017-01-12 10:19:19,888 jjjjj Exception"
}

来源：https://blog.csdn.net/xiaozhiit/article/details/84431541