NRPE监控linux本地信息

Nagios+Cacti监控之NRPE监控linux本地信息（一）描述:监控远程主机的磁盘容量，cpu负载这样的本地信息。nagios利用NRPE实验对远程主机的“本地信息”进行监控。NRPE工作原理MlomitoringHostRemoteLihux/UnixHo新NRPE由两部分组成：+-S MlomitoringHostRemoteLihux/UnixHo新NRPE由两部分组成：+-S cb(ick_nrp<?NagiosNRPE□check_nrpe插件，位于监控主机上□NRPEdaemon，运行在远程的Linux主机上（通常是被监控机）当Nagios需要监控某个远程Linux主机的服务或者资源时：nagios会运行check_nrpe这个插件，告诉它要检查什么；check_nrpe插件会连接到远程的NRPEdaemon，所用的方式是SSL;NRPEdaemon会运行相应的Nagios插件来执行检查；NRPEdaemon将检查的结果返回给check_nrpe插件，插件将其递交给nagios做处理。需求：监控机监控远程主机的cpu、磁盘、内存等信息。目的：实现监控远程主机的各项基本信息。在监控主机上：安装check_nrpe插件tarzxvfnrpe-2.13.tar.gzcdnrpe-2.13./configure-prefix=/var/www/html/nagiosmakeallmakeinstall-plugin在被监控机上：yum-yinstallxinetd增加用户设定密码useraddnagios-pPer@f0ect*（写入你准备设置的密码）安装nagios插件cd/softtarzvxfnagios-plugins-1.4.16.tar.gzcdnagios-plugins-1.4.16./configure--prefix=/var/www/html/nagios/make&&makeinstall这一步完成后，会在/var/www/html/nagios下生成3个目录include、libexec、shareI[r0ot01ocalhostnagios]fl1sinclude1ibexecshare[root@localhostnagiosJ|修改目录权限chownnagios.nagios/var/www/html/nagioschown-Rnagios.nagios/var/www/html/nagios/libexec安装NRPEcd/softtarzxvfnrpe-2.13.tar.gzJcdnrpe-2.13./configure-prefix=/var/www/html/nagiosmakeallmakeinstall-daemonmakeinstall-daemon-config现在在查看nagios目录，有5个文件IIroot@13ca_ho5tnagiasI+rbinetcincludelibcxccshare[roat@localhoEtnagios]fl是将NRPEdaemon作为xinetd下的一个服务运行的。在nrpe目录下执行makeinstall-xinetdLroot&localhostnrpe-2.13J#make/usr/liinJ1~c一皿644 -config-nrpe.xiieTd/e^c/xinetd,d/nrpe编辑这个脚本vim/etc/xinetd.d/nrpeonly_from后增加监控主机的IP地址

-j.—j.上.二w|T—mu*J-^J.uquTrnriT|■■r^BuAWViVB^w盅| ifr十 flagssoeket_typeportwaitusergroLLpserverREUSEstream5666nonagiosnagios/var/' html■nagios/bim-nrpeserver_args_c/var/^™/htmlo^nagios/etc/nrpe.cfg一一inetd1os_on_failure+=USERIDdisable =no onlyfrom =L92.L68.&W34' 加入监控主机的邛地让,中间用三格9.编辑/etc/services文件，在末尾增加NRPE服务vi/etc/servicesh+cuiaiuh+cuiaiua£ua.cuw#LQobj'SCtriiqobjecTiqobject ■48619/udptililiLDcalservices—插入—启动xinetd服务servicexinetdstart.rootSbanshunrpe~2.13]servicexinetdstartStartingxin^:d:[OK].roorSbanshunrpe~2.13]查看NRPE是否已经启动netstat-an|grep5666i— 、q-i- <x•>u[rootfiLocaIhostqq-i.LJ'—'IB i_r I■nrpe-2.1J]i；.slat-angrep5666tcp 00:::5666LISTENrn'oot@locslho5tnrp?-2-131#可以看到5666端口已经在监听了。被监控端iptables给权限vi/etc/sysconfig/iptables添加下面2彳亍-AINPUT-s2/32-pudp-mudp--dpor