web监控：zabbix自动发现+python之pycur模块对网站访问质量监控

234rfe · 发表于 2015-11-18 08:36:27

一、效果图：

二、需求说明：

最近需要对节点到源站、办公环境访问业务平台网站质量和办公网络线路质量的监控，简单的ping可以检测到一些东西，但是http请求的检查也要进行，于是就研究了下pycurl。

PycURl是一个C语言写的libcurl的python绑定库。libcurl 是一个自由的，并且容易使用的用在客户端的 URL 传输库。它的功能很强大，PycURL 是一个非常快速（参考多并发操作）和丰富完整特性的，但是有点复杂的接口。

三、python脚本：

1、编写httptime.py脚本
命令vi zabbix_agentd.conf.d/httptime.py
#!/usr/bin/python
# coding: UTF-8
import pycurl
import sys
import os
import json

class Test:
def __init__(self):
      self.contents = ''
def body_callback(self,buf):
      self.contents = self.contents + buf
def web_performance(input_url,mykey):
t = Test()
c = pycurl.Curl()
c.setopt(pycurl.WRITEFUNCTION,t.body_callback)
c.setopt(pycurl.ENCODING, 'gzip')
c.setopt(pycurl.URL,input_url)
c.perform()
if mykey == "NAMELOOKUP_TIME":
      #DNS解析时间ms
      NAMELOOKUP_TIME =  c.getinfo(c.NAMELOOKUP_TIME)
      print "%.2f"%(NAMELOOKUP_TIME*1000)
      #return mykey
elif mykey == "CONNECT_TIME":
      #建立连接时间ms
      CONNECT_TIME =  c.getinfo(c.CONNECT_TIME)
      print "%.2f" %(CONNECT_TIME*1000)
      #return mykey
elif mykey == "PRETRANSFER_TIME":
      #准备传输时间ms
      PRETRANSFER_TIME = c.getinfo(c.PRETRANSFER_TIME)
      print "%.2f" %(PRETRANSFER_TIME*1000)
      #return mykey
elif mykey == "STARTTRANSFER_TIME":
      #传输开始时间ms
      STARTTRANSFER_TIME = c.getinfo(c.STARTTRANSFER_TIME)
      print "%.2f" %(STARTTRANSFER_TIME*1000)
      #return mykey
elif mykey == "TOTAL_TIME":
      #传输结束总时间ms
      TOTAL_TIME = c.getinfo(c.TOTAL_TIME)
      print "%.2f" %(TOTAL_TIME*1000)
      #return mykey
elif mykey == "SIZE_DOWNLOAD":
      #下载数据包大小bytes/s
      SIZE_DOWNLOAD =  c.getinfo(c.SIZE_DOWNLOAD)
      print "%d" %(SIZE_DOWNLOAD)
      #return mykey
elif mykey == "HEADER_SIZE":
      #HTTP头部大小bytes
      HEADER_SIZE = c.getinfo(c.HEADER_SIZE)
      print "%d" %(HEADER_SIZE)
      #return mykey
elif mykey == "SPEED_DOWNLOAD":
      #平均下载速度bytes/s
      SPEED_DOWNLOAD=c.getinfo(c.SPEED_DOWNLOAD)
      print "%d" %(SPEED_DOWNLOAD)
      #return mykey

def web_discovery():
  website = ['www.qq.com','www.sina.com','www.iyunv.com'];
  devices = []
  for devpath in  website:
   device = os.path.basename(devpath)
   devices += [{'{#SITENAME}':device}]
  print json.dumps({'data':devices},sort_keys=True,indent=7,separators=(',',':'))

if __name__ == '__main__':
  if sys.argv[1] == "web_discovery":
      web_discovery()
  if sys.argv[1] == "web_performance":
      input_url = sys.argv[2]
      mykey = sys.argv[3]
      web_performance(input_url,mykey)

2、加上执行权限：
命令chmod +x zabbix_agentd.conf.d/httptime.py

3、应用到zabbix客户端配置：
命令tail -1 zabbix_agentd.conf
UserParameter=HTTP_CURL

,python /opt/soft/zabbix/etc/zabbix_agentd.conf.d/httptime.py $1 $2 $3

4、重启zabbix客户端：
/etc/init.d/zabbix_agentd  restart

5、服务端测试：
命令如下：

zabbix_get -s  192.168.2.32 -p 10050 -k "HTTP_CURL[web_discovery]"
zabbix_get -s  192.168.2.32 -p 10050 -k "HTTP_CURL[web_performance,www.qq.com,TOTAL_TIME]"
QQ截图20151118083053.png