One question per day _python. Pure Python implements low-level discovery dynamic service discovery?

Specific requirements:
1. Due to the independent development of xmzoomeye-agent currently passive monitoring mainly, in order to achieve Zabbix low-level discovery service independent discovery, need to automatically obtain the occupied port list according to the process name, and report data according to the port analysis

Implementation ideas:

1. Use the Psutil module to get a list of process IDs by process name
2. Traverse the/proc/net/tcp file to get the rem_address 00000000:0000 column, the Nineth column of socket_id and it in the form of a collection of dictionary storage to weight
3. Generating a collection of ports using the acquired PID list and the Socket_id collection dictionary
4. Try connecting ports for dynamic Data escalation

650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M02/87/FA/wKiom1flKmWSePxdAAAlVjy4230417.png "title=" Socket port. png "alt=" Wkiom1flkmwsepxdaaalvjy4230417.png "/>

Specific code:

#!/usr/bin/env python# -*- coding: utf-8 -*-"" "## authors: limanman#  oschina: http://xmdevops.blog.51cto.com/# purpose:# "" "#  Description:  Import public module Import osimport  reimport psutil#  Description:  Import other modules #  description:  Get process def pidof_processname (srvname):     pids = []    for pid in psutil.process_iter ():         if pid.name ()  == srvname:             pids.append (str (pid.pid))     return  pids#  Description:  Socket Port def socks_with_ports ():    sockets = {}     with open ('/proc/net/tcp ',  ' r+b ')  as fd:         for curline in fd:             sepline&nbSp;= curline.split ()             if  sepline[2] !=  ' 00000000:0000 ':                 continue             key = sepline[9]            addr,  Port = sepline[1].split (': ')              if key not in sockets:                 sockets[key] = set ()              sockets[key].add (int (port, 16))     return sockets#  Description:  Get port def analysis_sockports (pids, socks):     sock_ports = set ( )     for pid in pids:        fd_path =  Os.path.join (Os.path.join ('/proc ',  pid),  ' fd ')         for  rlink in os.listdir (Fd_path):             rpath = os.path.join (Fd_path, rlink)              if not os.path.exists (rpath):                 continue             vlink = os.readlink (rpath)              if not vlink.startswith (' socket: '):                 continue             match&nbsP;= re.search (R ' (? <=socket:\[) ([0-9]+) (? =\]) ',  vlink)              if not match:                 continue             addr = match.group (1)              if addr in socks:                 sock_ports.update (Socks[addr])     return sock_portsdef  Service_redis_running_status (add_data=none):    srv_name =  ' Redis-server '      pids = pidof_processname (Srv_name)     socks = socks_ With_ports ()     ports = analysis_sockports (pids, socks)      return  ' service: %s -> port:  '  % srv_name, portsif __name__ ==  ' __ Main__ ':     import pprint    pprint.pprint (service_redis_running_ Status ())

There are pictures and phases:

650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M00/87/F7/wKioL1flNUCCprWkAABFkw9S7f0428.png "title=" Test results. png "alt=" Wkiol1flnuccprwkaabfkw9s7f0428.png "/>

This article is from the "ζ Automated operation and maintenance development Road ζ" blog, please be sure to keep this source http://xmdevops.blog.51cto.com/11144840/1855964

One question per day _python. Pure Python implements low-level discovery dynamic service discovery?