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)

gen.py

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)