python通过snmp协议运用多线程获取多台主机网卡信息，写入数据库

#-*- coding:utf-8 -*-
import netsnmp
class SnmpClass(object):
    """
    SNMP
    """
    def __init__(self, oid="sysDescr", version=2, destHost="localhost", community="aaa"):
        self.oid = oid
        self.version = version
        self.destHost = destHost
        self.community = community

    @property
    def query(self):
        """
        snmpwalk
        """
        try:

            result = netsnmp.snmpwalk(self.oid,
                                      Version=self.version,
                                      DestHost=self.destHost,
                                      Community=self.community)
        except Exception, err:
            print err
            result = None
        return result

def getflow():
    x = SnmpClass(oid="ifInOctets", destHost="218.205.104.1")
    y = SnmpClass(oid="ifDescr", destHost="218.205.104.1")
    datakey = y.query
    datavaule = x.query
    data = {}
    for z in range(len(datakey)):
        data[datakey[z]] = datavaule[z]
    print data

getflow()

community：为团体字

运用多线程获取多台主机网卡信息，写入数据库。

多线程（英语：multithreading），是指从软件或者硬件上实现多个线程并发执行的技术。具有多线程能力的计算机因有硬件支持而能够在同一时间执行多于一个线程，进而提升整体处理性能。具有这种能力的系统包括对称多处理机、多核心处理器以及芯片级多处理（Chip-level multithreading）或同时多线程（Simultaneous multithreading）处理器。在一个程序中，这些独立运行的程序片段叫作“线程”（Thread），利用它编程的概念就叫作“多线程处理（Multithreading）”。具有多线程能力的计算机因有硬件支持而能够在同一时间执行多于一个线程（台湾译作“执行绪”），进而提升整体处理性能。

#coding:utf-8
import threading
import time
import netsnmp
import Queue
import logging
import logging.config
import MySQLdb
import datetime
from flask_sqlalchemy import SQLAlchemy

start_time = time.time()
#tm = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
#start_time = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
#start_time = datetime.datetime.now()
hosts = ["218.205.104.3", "218.205.104.8"]
myq = Queue.Queue()
rq = Queue.Queue()
conn = MySQLdb.connect(host='218.205.104.27', user='admin',passwd='7758258', port=12306, db='yxjs')
cursor = conn.cursor()
logging.config.fileConfig("/root/tmp/logger.ini")
logger = logging.getLogger("status_domain")
#
#把host和oid组成任务

def list_sum(x):
    for i in range(len(x)):
        try:x[i] = int(x[i])
        except:x[i] = 0
    return sum(x)

def insert_DB_flow_mul( dt,**other):
    while True:
        try:
            MysqlDB = MysqldbClass("localhost", "admin", "7758258", "WCMSS", "utf8" )
            MysqlDB.getCurs()
            MysqlDB.insert(insert_sql_cache_domain, [(dt, domain, sum, hit, miss, size,resptime, s_code_000, s_code_20x, s_code_30x, s_code_40x, s_code_50x, othercode, svrname)])
            print 'insert success'
            logger.debug(((dt, domain, sum, hit, miss, size,resptime, s_code_000, s_code_20x, s_code_30x, s_code_40x, s_code_50x, othercode, svrname), "insert_sql OK."))
            MysqlDB.freeCurs()
            MysqlDB.commit()
            MysqlDB.close()
            break
        except:
            time.sleep(10)
            logger.debug(('retry: ', (datetime, svrname), sys.exc_info()))

for host in hosts:
    myq.put(host)

def poll_one_host():
    while True:
        try:
            #死循环从队列中获取任务，直到队列任务为空
            host = myq.get(block=False)
            session = netsnmp.Session(Version=2, DestHost=host, Community="dnion",Timeout=3000000,Retries=0)
            oid0 = netsnmp.Varbind('.1.3.6.1.2.1.1.5.0')         #0 get 主机名
            oid1 = netsnmp.Varbind('.1.3.6.1.2.1.2.2.1.2')       #1 walk 网卡信息
            oid2 = netsnmp.Varbind('.1.3.6.1.2.1.2.2.1.10')      #2 walk 网卡接收的字节数
            oid3 = netsnmp.Varbind('.1.3.6.1.2.1.2.2.1.16')      #3 walk 网卡流出字节数
            oid4 = netsnmp.Varbind('.1.3.6.1.4.1.2021.11.11.0')  #4 空闲cpu百分比
            oid5 = netsnmp.Varbind('.1.3.6.1.4.1.2021.10.1.3.1') #5 5分钟系统负载
            oid6 = netsnmp.Varbind('.1.3.6.1.4.1.2021.10.1.3.2') #6 10分钟系统负载
            oid7 = netsnmp.Varbind('.1.3.6.1.4.1.2021.10.1.3.3') #7 15分钟系统负载
            oid8 = netsnmp.Varbind('.1.3.6.1.4.1.2021.4.5.0')    #8 机器内存总数
            oid9 = netsnmp.Varbind('.1.3.6.1.4.1.2021.4.6.0')    #9 机器已用内存
            oid10 = netsnmp.Varbind('.1.3.6.1.4.1.2021.9.1.6')   #10 walk 系统盘总容量
            oid11 = netsnmp.Varbind('.1.3.6.1.4.1.2021.9.1.8')   #11 walk 系统盘已用容量
            var_list = netsnmp.VarList(oid0,oid4,oid5,oid6,oid7,oid8,oid9)
            var_list1 = netsnmp.VarList()
            var_list1.append(oid1)
            var_list2 = netsnmp.VarList()
            var_list2.append(oid2)
            var_list3 = netsnmp.VarList()
            var_list3.append(oid3)
            var_list10 = netsnmp.VarList()
            var_list10.append(oid10)
            var_list11 = netsnmp.VarList()
            var_list11.append(oid11)
            ret = session.get(var_list)
            ret1 = session.walk(var_list1)        # 网卡信息
            ret2 = list(session.walk(var_list2))  # 网卡流入流量
            ret3 = list(session.walk(var_list3))  # 网卡流出流量
            ret10 = list(session.walk(var_list10))# 系统盘总容量
            ret11 = list(session.walk(var_list11))# 系统盘已用容量
            print ret1
            print ret2

            tm = datetime.datetime.now().strftime("%Y%m%d%H%M%S")
            hostname = str(ret[0])
            cpu_ret = str(float(ret[1])/100)+'%'   #CPU使用率
            ll_1 = float(ret[2])
            ll_5 = float(ret[3])
            ll_15 = float(ret[4])
            ipaddr = str(host)
            ram_ret = str(round((float(ret[6])/float(ret[5]))*100,2))+'%'                  #内存使用率
            disk_ret = str(round(float(list_sum(ret11))/float(list_sum(ret10))*100,2))+'%' #磁盘使用率

            value = (ll_1, ll_5, ll_15, ipaddr, tm)
            #print value
             me = Mondata(ll_1, ll_5, ll_15, ipaddr, tm)
            # db.session.add(me)
            # db.session.commit()
            #cursor.execute("insert into mondata (ll_1, ll_5, ll_15, ipaddr, datetime)values (%s, %s, %s, %s, %s)", (ll_1, ll_5, ll_15, ipaddr, tm))
            #cursor.close()
            #conn.commit()
            #conn.close()

            rq.put((host, ret, start_time))

        except Queue.Empty:

            break

thread_arr = []
#开启多线程
num_thread = 200
for i in range(num_thread):
    t = threading.Thread(target=poll_one_host, kwargs={})
    t.setDaemon(True)
    t.start()
    thread_arr.append(t)
#等待任务执行完毕
for i in range(num_thread):
    thread_arr[i].join()

while True:
    try:
        info = rq.get(block=False)
        #print info
    except Queue.Empty:
        #print time.time() - start_time

        break