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	%s	%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