Nagios監(jiān)控平臺(tái)之二：nrpe監(jiān)控遠(yuǎn)程Linux主機(jī)

1、nagios 系列文章：nagios監(jiān)控平臺(tái)之一：在centos上安裝 nagios 服務(wù)nagios監(jiān)控平臺(tái)之二： nrpe 監(jiān)控遠(yuǎn)程 linux 主機(jī)nagios監(jiān)控平臺(tái)之三： mrtg監(jiān)控交換機(jī)流量nagios監(jiān)控平臺(tái)之四：監(jiān)控linux 服務(wù)器 cpu溫度nagios監(jiān)控平臺(tái)之五：監(jiān)控windows 服務(wù)器nagios監(jiān)控平臺(tái)之六：安裝ndoutils 保存 nagios 數(shù)據(jù)到 mysql 數(shù)據(jù)庫nagios監(jiān)控平臺(tái)之七： nagios監(jiān)控 hp-ux 監(jiān)控監(jiān)控 linux 本地主機(jī)時(shí)，我們可以直接更改配置文件進(jìn)行監(jiān)控，如果需要監(jiān)控的主機(jī)與 nagios 不在同一機(jī)器上，即監(jiān)控遠(yuǎn)程l

2、inux 主機(jī)時(shí)，我們需要借助nrpe插件實(shí)現(xiàn)。nrpe 工作原理圖：遠(yuǎn)程主機(jī)的操作安裝支持：#yum-yinstallopensslopenssl-devel 下載 nagiosplugins 和 nrpe #cd/tmp #wgethttp:/ #wgethttp:/ 創(chuàng)建 nagios 帳號(hào)#useraddnagios #passwdnagios 安裝 nagios-plugin #cd/tmp #tarxvfznagios-plugins-1.4.16.tar.gz #cdnagios-plugins-1.4.16 #exportldflags=-ldl #./configure-wi

3、th-nagios-user=nagios-with-nagios-group=nagios-enable-redhat-pthread-workaround #make #makeinstall #chownnagios.nagios/usr/local/nagios #chown-rnagios.nagios/usr/local/nagios/libexec/ 安裝 nrpe #cd/tmp #tarxvfznrpe-2.13.tar.gz #cdnrpe-2.13 #./configure #makeall #makeinstall-plugin #makeinstall-daemon

4、#makeinstall-daemon-config #yuminstallxinetd #makeinstall-xinetd 配置 nrpe 以守護(hù)進(jìn)程運(yùn)行1、更改 /etc/xinetd.d/nrpe文件，設(shè)置允許nagios 服務(wù)器連接 ,如 nagios 服務(wù)器的ip 為 : only_from= 2、在/etc/services結(jié)尾增加：nrpe5666/tcp#nrpe 3、啟動(dòng) xinetd #servicexinetdrestart 4、驗(yàn)證 nrpe 是否監(jiān)聽#netstat-at|grepnrpe 5、測試 n

5、rpe 是否正常運(yùn)行#/usr/local/nagios/libexec/check_nrpe-hlocalhost nrpev2.13 6、更改 /usr/local/nagios/etc/nrpe.cfg nrpe.cfg 文件里包含需要監(jiān)控遠(yuǎn)程主機(jī)的命令，如下面是我的配置：#用戶登錄數(shù)commandcheck_users=/usr/local/nagios/libexec/check_users-w5-c10 #cpu負(fù)載commandcheck_load=/usr/local/nagios/libexec/check_load-w15,10,5-c30,25,20 #磁盤空間comma

6、ndcheck_disk=/usr/local/nagios/libexec/check_disk-w20-c10-p/dev/sda #僵尸進(jìn)程數(shù)commandcheck_zombie_procs=/usr/local/nagios/libexec/check_procs-w5-c10-sz #進(jìn)程總數(shù)commandcheck_total_procs=/usr/local/nagios/libexec/check_procs-w150-c200 #物理內(nèi)存commandcheck_mem=/usr/local/nagios/libexec/check_mem-h$hostaddress$ #

7、腳本內(nèi)容見下文物理內(nèi)存檢查腳本 /usr/local/nagios/libexec/check_mem：#!/bin/bash #checkmemoryscript #totalmemory #bybarlow #2014-06-13 help() echousage:basename$0-w-c echo-wiswarning%ofusedmem;-ciscritical%ofusedmem! exit3 total=free-m|head-2|tail-1|gawkprint$2 #checkmemory free=free-m|head-3|tail-1|gawkprint$4 used

8、=free-m|head-3|tail-1|gawkprint$3 #tocalculatefreepercent #usetheexpressionfree*100/total freetmp=expr$free*100 usedtmp=expr$used*100 free_percent=expr$freetmp/$total used_percent=expr$usedtmp/$total if$#-le3;then help elif!$1=-w&/dev/null;then help elif!$3=-c&/dev/null;then help fi warnifnu

9、m() if!$warn=$optarg;then help fi critifnum() if!$crit=$optarg;then help fi whilegetoptsw:c:hopt;do case$optin w) warntmp=$optarg warn=$(echo$warntmp|bc2/dev/null) if!$warn=$warntmp;then help fi ; c) crittmp=$optarg crit=$(echo$crittmp|bc2/dev/null) if!$crit=$crittmp;then help fi ; h) help; esac don

10、e crit_level=expr$total*$crit/100 warn_level=expr$total*$warn/100 if$used_percent-gt$crit;then echocritical!usedmemory$usedmb($used_percent%,total=$totalmb)|usedmem=$usedmb;$warn_level;$crit_level;0;$total exit2 fi if$used_percent-gt$warn;then echowarning!usedmemory$usedmb($used_percent%,total=$tota

11、lmb)|usedmem=$usedmb;$warn_level;$crit_level;0;$total exit1 else echook!usedmemory$usedmb($used_percent%,total=$totalmb)|usedmem=$usedmb;$warn_level;$crit_level;0;$total exit0 fi nagios 服務(wù)器的操作首先安裝 nagios,參考：http:/ nrpe #cd/tmp #wgethttp:/ #tarxvfznrpe-2.13.tar.gz #cdnrpe-2.13 #./configure #makeall #

12、makeinstall-plugin 測試是否正常 : #/usr/local/nagios/libexec/check_nrpe-h nrpev2.13 為監(jiān)控遠(yuǎn)程主機(jī)定義host 和 service 1、定義 check_nrpe 命令在文件 /usr/local/nagios/etc/objects/commands.cfg后面增加：#check_nrpecommanddefinition definecommand command_namecheck_nrpe command_line$user1$/check_nrpe-h$hostaddress$-t30-c$arg1$ 2、創(chuàng)建 /usr/local/nagios/etc/objects/host.cfg（需提前在 nagios.cfg 中定義）host 定義示例：definehost uselinux-server host_nameremotehost address 3、創(chuàng)建服務(wù)： vi/usr/local/nagios/etc/objects/services.cfg（需