【移動應(yīng)用開發(fā)技術(shù)】nagios監(jiān)控lvs連接數(shù)

一.在被監(jiān)控端(lvs主機(jī))上安裝nrpe以及nagios-plugins,具體如下：

1)安裝nagios-pluginsgroupaddnagiosuseradd-gnagiosnagioswget/sourceforge/nagiosplug/nagios-plugins-1.4.16.tar.gztar-zxfnagios-plugins-1.4.16.tar.gzcdnagios-plugins-1.4.16./configure

--enable-redhat-pthread-workaroundmake&&makeinstallchown

nagios.nagios

/usr/local/nagioschown

-Rnagios.nagios/usr/local/nagios/libexec2)安裝nrpewget/sourceforge/nagios/nrpe-2.12.tar.gztar-zxfnrpe-2.12.tar.gz./configuremakeallmakeinstall-pluginmakeinstall-daemonmakeinstall-daemon-configmakeinstall-xinetd二.修改/etc/xinetd.d/nrpe的文件1)在only_from參數(shù)里加入nagios服務(wù)器的IP地址（中間用英文逗號隔開）vi/etc/xinetd.d/nrpe

only_from=,xxx.xxx.xxx.xxx

#監(jiān)控服務(wù)器的可信IP

2),在/etc/services中添加NRPEvi/etc/services

nrpe

5666/tcp

#NRPE

3)，servicexinetdrestart檢查NRPE是否運(yùn)行#netstat-at|grepnrpetcp

0

0

*:nrpe

*:*

LISTEN

4).修改nrpe.cfg文件vi/usr/local/nagios/etc/nrpe.cfg找到allowed_hosts=allowed_hosts=,xxx.xxx.xxx.xxx

#監(jiān)控服務(wù)器的可信IP

添加

command[check_conn]=/usr/local/nagios/libexec/check_lvs

5)運(yùn)行nrpe/usr/local/nagios/bin/nrpe-c/usr/local/nagios/etc/nrpe.cfg-d

6)運(yùn)行check_nrpe腳本

/usr/local/nagios/libexec/check_nrpe-Hlocalhost若出現(xiàn)NRPE版本信息則表示成功，若出現(xiàn)openssl表示openssl沒有被安裝，安裝opensslyum-yinstallopenssl*

7)修改/etc/sudoers找到

#Defaults

requiretty

并取消注釋，另外新增一行。表示nagios用戶不需要登陸終端就可以調(diào)用命令。

Defaults

requiretty

Defaults:nagios

!requiretty

#添加nagios

請求sudo，允許特定指令時(shí)（可跟參數(shù)），不需要密碼（如）。

nagios

ALL=(ALL)

NOPASSWD:

ALL

三.建立check_lvs腳本并將其保存至/usr/local/nagios/libexec/目錄下:

#!/bin/bash#Author:uxinACT_COUNT=0Inactive_count=0stat1=`sudoipvsadm|grephttp|wc-l`if[$stat1-ne0];thenforNUMin`sudoipvsadm|grephttp|awk'{print$5}'`doACT_COUNT=$(($ACT_COUNT+$NUM))doneforNUMin`sudoipvsadm|grephttp|awk'{print$6}'`doInactive_count=$(($Inactive_count+$NUM))doneelseecho"LVSCRITICAL,"LVSisDown""exit2fiif[$ACT_COUNT==0];thenecho"LVSok,"0activeconnection""exit1elseecho"LVSOK-LVSisrunning(conn:$ACT_COUNTactive,$Inactive_countinactive)|active=$ACT_COUNT;80000;99999;0;inactive=$Inactive_count;