nagios note

 server:    nagios    nagios_plugin    nrpe　　ip:192.168.1.2
 client    nagios_plugin    xinetd    nrpe     ip:192.168.1.3

一篇介绍nagios很好的博文 http://www.cnblogs.com/mchina/archive/2013/02/20/2883404.html

nagios插件(python + psutil)(client 被监控点)(收集system信息)

 yum install -y gcc python-devel
 yum install python-setuptools -y
 easy_install psutil

 #client side
 #vim /usr/local/nagios/libexec/get_sys_info.py

 #!/usr/bin/env python
 __author__ = 'metasequoia'

 import psutil
 import datetime
 import platform

 def info():
     system_info = platform.version()
     print "system_version:%s" % system_info
     cpu_count = psutil.cpu_count()
     print "logical_cpu_count:%score" % cpu_count
     mem = psutil.virtual_memory()
     print "memory_volume:%sM memory_used:%sM memory_free:%sM percent:%s%s" % ((mem[0]/1024/1024),(mem[3]/1024/1024),(mem[4]/1024/1024),mem[2],"%")
     swap = psutil.swap_memory()
     print "swap_volume:%sM swap_used:%sM swap_free:%sM percent:%s%s" % ((swap[0]/1024/1024),(swap[1]/1024/1024),(swap[2]/1024/1024),swap[3],"%")
     print datetime.datetime.fromtimestamp(psutil.boot_time()).strftime("%Y-%m-%d %H:%M:%S") + " UP"
     users = psutil.users()
     for user in users:
         print "%s\t%s\t%s (%s)" % (user[0],user[1],datetime.datetime.fromtimestamp(user[3]).strftime("%Y-%m-%d %H:%M"),user[2])
     #disk_partitions = psutil.disk_partitions()
     disk_usage = psutil.disk_usage('/')
     print "disk_volume:%sG disk_used:%sG disk_free:%sG percent:%s%s" % ((disk_usage[0]/1024/1024/1024),(disk_usage[1]/1024/1024/1024),(disk_usage[2]/1024/1024/1024),disk_usage[3],"%")

 if __name__ == "__main__":
     info()

chmod + /usr/local/nagios/libexec/get_sys_info.py

client define command

 vim /usr/local/nagios/etc/nrpe.cfg
     command[check_sys_info]=/usr/local/nagios/libexec/get_sys_info.py

server define command

 vim commands.cfg
 define command{
         command_name    check_nrpe
         command_line    $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1
 }

server register service

 vim services.cfg

 define service{
         use                     local-service
         host_name               Nagios-Linux
         service_description     Check sys_info
         check_command           check_nrpe!check_sys_info
         }

server test

 /usr/local/nagios/libexec/check_nrpe -H 192.168.1.3 -c check_sys_info