DNS module Dnspython application and Business monitoring example

1 Dnspython Processing module installation, source mode

wget http://www.dnspython.org/kits/1.9.4/dnspython-1.9.4.tar.gz

Tar zxf dnspython-1.9.4.tar.gz

CD dnspython-1.9.4/

Python setup.py Install

2 parsing examples

A record query example

#!/usr/bin/env python#-*-coding:utf-8-*-import dns.resolverdomain = raw_input ("Please enter a domain name to resolve:") A = Dns.resolver.query (Domain, ' A ') for I in A.response.answer:for j in i.items:if J.rdtype = = 1:print j.address

MX Record Example

#!/usr/bin/env python#-*-coding:utf-8-*-import dns.resolverdomain=raw_input (' Please enter a domain name: ') mx=dns.resolver.query ( Domain, ' MX ') for I in Mx:print i.preference, I.exchange

NS Record Example

Import dns.resolverdomain=raw_input (' Please enter a domain name: ') ns=dns.resolver.query (domain, ' NS ') for I in NS.response.answer:for J In I.items:print J.to_text ()

CNAME record Example

Import dns.resolverdomain=raw_input (' Please enter a domain name: ') cname=dns.resolver.query (domain, ' cname ') for I in Cname.response.answer:for J in I.items:print J.to_text ()

3 Monitoring your business with DNS domain name rotation

monitoring example

#!/usr/bin/env python# -*- coding: utf-8 -*-import dns.resolverimport  Osimport httplibiplist=[]appdomain= "www.ctrip.com" Def get_iplist (domain= ""):         try:            a= Dns.resolver.query (Domain, ' A ')         except Exception,e:             print  "Dns resolver error:" + STR (e)         for i in A.response.answer:             for j in i.items:                 if j.rdtype == 1:                      iplist.append (j.adDress)         return truedef checkip (IP):         checkurl=ip+ ":"         getcontent= ""         httplib.socket.setdefaulttimeout (5)          conn=httplib. Httpconnection (Checkurl)         try:                 conn.request ("GET", "/", headers={"Host": AppDomain})                 r= Conn.getresponse ()                  getcontent=r.read (        finally:    )         print getcontent             if getcontent== "<! Doctype html> ":                     print ip+ ": 80 port normal   [ok]"              else:                     print ip+ ": 80 port Exception   [error]" if  __name__== "__main__":     if get_iplist (AppDomain)  and len (IPList) >0:             for ip in iplist:                      checkip (IP)     else:             print  "Dns resolver error"

Execute Python test1.py

<! DOCTYPE html>

118.89.206.133:80 Port OK [OK]

DNS module Dnspython application and Business monitoring example