Python脚本实现Zabbix多行日志监控过程解析

通过使用zabbix 日志监控我发现一个问题例如oracle的日志有报错的情况，通常不会去手动清理这样的话当第二次有日志写进来的时候 zabbix的机制是回去检查全部日志，这样的话之前已经告警过的错误日志,又会被检查到,这样就会出现重复告警，而且zabbix的日志监控只能读到匹配当前行关键字的数据，感觉不太灵活, 比如我想要匹配到的关键字之后再当前关键字的下N行再去匹配另一个关键字这个时候就比较麻烦,在这里给大家推荐一个有效,便捷解决的方式。

通过Python脚本实现日志监控要求 1 记录脚本检查日志位置,避免下次触发脚本的时候出现重复告警 2 关键字匹配支持正则 3 支持多个关键字查询，例如第一个关键字匹配到当之后在这个关键字的下N行再去匹配第二个关键字具体传参格式
python3 npar.py /u03/z.txt \'(ORA-|REEOR)，(04030|02011)\’ 2

第一个参数是日志路径第二个参数是关键字第三个参数为匹配到第一个表达式这种的关键字后再去地 N(2)行去匹配第二个关键词（04030|02011）具体脚本实现如下

import os
import sys
logtxt = \"logtxt.txt\"
def read_txt(files, start_line):
	data = []
data.append(\"\")
with open(str(files) + \"\", \"r\",
		encoding = \'UTF-8\') as f:
	for line in f.readlines():
	line = line.strip(\'\\n\')# 去掉列表中每一个元素的换行符
data.append(line)
# 记录本次的行数
wirte_log(len(data) - 1)
if len(data) > start_line:
	return data[start_line - 1: ]
else :
	print(\"开始行数大于文本文件总行数！\")
def wirte_log(lines):
	global logtxt
with open(logtxt, \"w\") as file: #”w \"代表着每次运行都覆盖内容
file.write(str(lines))
def read_log():
	global logtxt
if not os.path.exists(logtxt):
	with open(logtxt, \"w\") as file: #”w \"代表着每次运行都覆盖内容
file.write(str(1))
with open(logtxt + \"\", \"r\", encoding =
		\'UTF-8\') as f:
	s_lines = f.readlines()
print(\"从第\" + str(s_lines[0]) + \"行开始\")
return s_lines[0]
def deal_read_log(files, keyword,
		interval_line):
	keywords = keyword.replace(\"(\", \"\").replace(
		\")\", \"\").replace(\"\'\", \"\").replace(\'\"\',
		\'\"\').split(\',\')
start_keywords = keywords[0].split(\"|\")
end_keywords = keywords[1].split(\"|\")
start_line = read_log()
lines_data = read_txt(files, int(
	start_line))
for_line = 1
while (for_line < len(lines_data)):
	#print(for_line)
# print(lines_data[for_line])
#
if end_keywords in lines_data[for_line]:
	#print(lines_data[for_line])
# print(\"-------------------\")
# for_line = for_line + 1
#
else :
	isexist = 0
for sk in start_keywords:
	if sk in lines_data[for_line]:
	isexist = 1
break;
if isexist == 1:
	#if start_keywords[0] in lines_data[
		for_line] or start_keywords[1] in
	lines_data[for_line]:
	#当前行有end_keywords
isexist2 = 0
for sk in end_keywords:
	if sk in lines_data[for_line]:
	isexist2 = 1
break;
if isexist2 == 1:
	#print(\"行数=\" + str(start_line - 1 +
		for_line) + \"-\" + str(start_line - 1 +
		for_line))
print(lines_data[for_line])
else :
	#当前行没有end_keywords。 往下interval_line行去寻找
# 标记当前行数
flag_line = for_line
count = 1
for_line = for_line + 1
while (for_line < len(lines_data)):
	isexist3 = 0
for sk in end_keywords:
	if sk in lines_data[for_line]:
	isexist3 = 1
break;
if isexist3 == 1:
	#print(\"行数=\" + str(start_line - 1 +
		flag_line) + \"-\" + str(start_line -
		1 + for_line))
for prin in range(flag_line, for_line +
		1):
	print(lines_data[prin])
break;
for_line = for_line + 1
if count == int(interval_line):
	break;
count = count + 1
for_line = for_line - 1
for_line = for_line + 1
if name == \'main\':
	files = sys.argv[1]
if \'.log\' in files:
	logtxt = files.replace(\".log\",
		\"_log.txt\")
else :
	logtxt = files.replace(\".txt\",
		\"_log.txt\")
# files = \"ora.txt\"
keywords = sys.argv[2]
# keywords = \"\'((04030|04000)，ORA-)\'\"
#上下关联行数
interval_line = int(sys.argv[3])
# interval_line = 10
deal_read_log(files, keywords,
	interval_line)

接下来就是添加监控了

在agent的conf 文件里面添加UserParameter