python-Django监控系统二次开发Nagios

1、Nagios安装

yum install -y nagios.i686

yum install -y nagios-plugins-all.i686

安装完后会在apache的配置文件目录下/etc/httpd/conf.d/产生一个外部的配置文件nagios.conf

service httpd start

service nagios start

default user nagiosadmin password nagiosadmin

2.配置文件生成器

Django前期的收集主机信息代码

优化后：

#!/usr/bin/env python

import urllib,urllib2
from subprocess import Popen,PIPE
import pickle
import json

def getIfconfig():
    p = Popen(['ifconfig'],stdout=PIPE)
    data = p.stdout.read()
    return data

def getDmi():
    p = Popen(['dmidecode'],stdout=PIPE,stderr=PIPE)
    data_out = p.stdout.read()
    data_err = p.stderr.read()
    if data_err:
        return {'vendor':'container','product':'container','sn':'XXX'}
    return data_out

def parseData(data):
    if isinstance(data,dict):
        return data
    parsed_data = []
    new_line = ''
    data = [i for i in data.split('\n') if i]
    for line in data:
        if line[0].strip():
             parsed_data.append(new_line)
            new_line = line +'\n'
        else:        
            new_line += line+'\n'
    parsed_data.append(new_line)
    return [i for i in parsed_data if i]

def parseIfconfig(parsed_data):
    parsed_data = [i for i in parsed_data if not i.startswith('lo')]
    for lines in parsed_data:
        line_list = lines.split('\n')
        devname = line_list[0].split()[0]
        macaddr = line_list[0].split()[-1]
        ipaddr = line_list[1].split()[1].split(':')[1]
        break
    dic['ip'] =ipaddr
    return dic

def parseDmi(parsed_data):
    if isinstance(parsed_data,dict):
        return parsed_data
    dic = {}
    parsed_data = [i for i in parsed_data if i.startswith('System Information')]
    parsed_data = [i for i in parsed_data[0].split('\n')[1:] if i]
    dmi_dic =  dict([i.strip().split(':') for i in parsed_data])
    dic['vendor'] = dmi_dic['Manufacturer'].strip()
    dic['product'] = dmi_dic['Product Name'].strip()
    dic['sn'] = dmi_dic['Serial Number'].strip()[:15]
    return dic

def getHostname(f):
    with open(f) as fd:
        for line in fd:
            if line.startswith('HOSTNAME'):
                hostname = line.split('=')[1].strip()
                break
    return {'hostname':hostname}

def getOsver(f):
    with open(f) as fd:
        for line in fd:
            osver = line.strip()
            break
    return {'osver':osver}

def getCpu(f):
    num = 0
    with open(f) as fd:
        for line in fd:
            if line.startswith('processor'):
                num +=1
            if line.startswith('model name'):
                cpu_model = line.split(':')[1].split()
                cpu_model = cpu_model[0]+' '+cpu_model[-1]
    return {'cpu_num':num,'cpu_model':cpu_model}

def getMemory(f):
    with open(f) as fd:
        for line in fd:
            if line.startswith('MemTotal'):
                mem = int(line.split()[1].strip())
                break
    mem = "%d" % int(mem/1024.0)+'M'
    return {'memory':mem}
                

if __name__ == '__main__':
    dic = {}
    data_ip = getIfconfig()
    parsed_data_ip = parseData(data_ip)
    ip = parseIfconfig(parsed_data_ip)
    data_dmi = getDmi()
    parsed_data_dmi = parseData(data_dmi)
    dmi = parseDmi(parsed_data_dmi)
    hostname = getHostname('/etc/sysconfig/network')
    osver = getOsver('/etc/issue')
    cpu = getCpu('/proc/cpuinfo')
    mem = getMemory('/proc/meminfo')
    dic.update(ip)
    dic.update(dmi)
    dic.update(hostname)
    dic.update(osver)
    dic.update(cpu)
    dic.update(mem)
    #data = urllib.urlencode(dic)
    #data = pickle.dumps(dic)
    data = json.dumps(dic)
    req = urllib2.urlopen('http://192.168.1.120:8000/hostinfo/collect/',data)
    print req.read()

 

在nagios上分组

vim gen.py

#!/usr/bin/env python

import os
import urllib,urllib2
import json

CUR_DIR = os.path.dirname(__file__)
CONF_DIR = os.path.join(os.path.abspath(CUR_DIR),'hosts')

HOST_TEMP="""define host{
                use             linux-server
                host_name       %(hostname)s
                alias           %(hostname)s
                address         %(ip)s
                }
        """
HOSTGROUP_TEMP="""define hostgroup{
        hostgroup_name  %(groupname)s
        alias           %(groupname)s
        members         %(members)s
        }
    """
def initDir():
    if not os.path.exists(CONF_DIR):
        os.mkdir(CONF_DIR)

def getData():
    url = 'http://192.168.1.120:8000/hostinfo/getjson/'
        req = urllib2.urlopen(url)
        data = json.loads(req.read())
    return data

def writeConf(f,data):
        with open(f,'w') as fd:
                fd.write(data)

def parseData(data):
    host_conf = ''
    hostgroup_conf = ''
    for hg in data:
        groupname = hg['groupname']
        members = []
        for h in hg['members']:
            hostname = h['hostname']
            members.append(hostname)
            host_conf += HOST_TEMP % h
        hostgroup_conf += HOSTGROUP_TEMP % {'groupname':groupname, 'members':','.join(members)}
    fp_hostconf = os.path.join(CONF_DIR,'hosts.cfg')
    fp_hostgroupconf = os.path.join(CONF_DIR,'hostgroup.cfg')
    writeConf(fp_hostconf,host_conf)
    writeConf(fp_hostgroupconf,hostgroup_conf)


if __name__ == '__main__':
    initDir()
    data = getData()
    parseData(data)

 同步配置文件sync_gen.sh

#!/bin/bash

cur=`dirname $0`
cd $cur
python gen.py
md5=`find hosts/ -type f -exec md5sum {} \;|md5sum`
cd /etc/nagios/conf.d
conf_md5=`find hosts/ -type f -exec md5sum {} \;|md5sum`
if [ "$md5" != "$conf_md5" ];then
    cd -
    cp -rp hosts/ /etc/nagios/conf.d
    /etc/init.d/nagios restart
fi

 如果两个分组都有一样的信息，即一样的主机名，则需加判断条件：

#!/usr/bin/env python

import os
import urllib,urllib2
import json

CUR_DIR = os.path.dirname(__file__)
CONF_DIR = os.path.join(os.path.abspath(CUR_DIR),'hosts')

HOST_TEMP="""define host{
                use             linux-server
                host_name       %(hostname)s
                alias           %(hostname)s
                address         %(ip)s
                }
        """
HOSTGROUP_TEMP="""define hostgroup{
        hostgroup_name  %(groupname)s
        alias           %(groupname)s
        members         %(members)s
        }
    """
def initDir():
    if not os.path.exists(CONF_DIR):
        os.mkdir(CONF_DIR)

def getData():
    url = 'http://192.168.1.120:8000/hostinfo/getjson/'
        req = urllib2.urlopen(url)
        data = json.loads(req.read())
    return data

def writeConf(f,data):
        with open(f,'w') as fd:
                fd.write(data)

def countDict(k,d):
    if k in d:
        d[k] += 1
    else:
         d[k] = 1

def parseData(data):
    dic = {}
    host_conf = ''
    hostgroup_conf = ''
    for hg in data:
        groupname = hg['groupname']
        members = []
        for h in hg['members']:
            hostname = h['hostname']
            members.append(hostname)
            countDict(hostname,dic)
            if dic(hostname) < 2:
                host_conf += HOST_TEMP % h
        hostgroup_conf += HOSTGROUP_TEMP % {'groupname':groupname, 'members':','.join(members)}
    fp_hostconf = os.path.join(CONF_DIR,'hosts.cfg')
    fp_hostgroupconf = os.path.join(CONF_DIR,'hostgroup.cfg')
    writeConf(fp_hostconf,host_conf)
    writeConf(fp_hostgroupconf,hostgroup_conf)


if __name__ == '__main__':
    initDir()
    data = getData()
    parseData(data)