nagios nrpe監(jiān)控遠(yuǎn)程主機(jī)

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配置NRPE:

vi/usr/local/nagios/etc/nrpe.cfg

allowed_hosts=,1

#Nagios監(jiān)控機(jī)的地址或域名

修改/etc/hosts.allow增加監(jiān)控機(jī)ip

echo'nrpe:1'/etc/hosts.allow

啟動(dòng)NRPE守護(hù)進(jìn)程：

/usr/local/nagios/bin/nrpe-c/usr/local/nagios/etc/nrpe.cfg-d

可以將此命令參與/etc/rc.local，以便開(kāi)機(jī)自動(dòng)啟動(dòng)。

echo/usr/local/nagios/bin/nrpe-c/usr/local/nagios/etc/nrpe.cfg-d/etc/rc.local

檢查NRPE是否正常：

/usr/local/nagios/libexec/check_nrpe-H

查看相應(yīng)的端口：netstat-an|grep5666

防火墻開(kāi)啟5666允許局域網(wǎng)IP或固定IP連接

在監(jiān)控主機(jī)上

/usr/local/nagios/libexec/check_nrpe-H$目標(biāo)主機(jī)地址

都應(yīng)當(dāng)可以輸出NRPE的版本：NRPEv2.12

檢查可監(jiān)控的服務(wù)

在被監(jiān)控端的nrpe.cfg文件中，可以看到這樣的配置：

command[check_load]=/usr/local/nagios/libexec/check_load-w15,10,5-c30,25,20

這是用來(lái)檢查CPU負(fù)載的。

假使需要自定參數(shù)則使用下面命令

command[check_load]=/usr/local/nagios/libexec/check_load-w$ARG1$-c$ARG2$并開(kāi)啟dont_blame_nrpe=1

開(kāi)啟參數(shù)將會(huì)帶來(lái)一定的安全風(fēng)險(xiǎn)

被監(jiān)控機(jī)重啟nrpe

psaux|grepnrpe

kill$pid

/usr/local/nagios/bin/nrpe-c/usr/local/nagios/etc/nrpe.cfg–d

4.監(jiān)控機(jī)設(shè)置

在監(jiān)控機(jī)commands.cfg添加nrpe的定義#'check_nrpe'commanddefinitiondefinecommand{command_namecheck_nrpecommand_line$USER1$/check_nrpe-H$HOSTADDRESS$-c$ARG1$}增加hostA.cfg在/usr/local/nagios/etc/objects/目錄下新建文件：hostA.cfg把A.cfg添加到nagios主機(jī)：

echocfg_file=/usr/local/nagios/etc/objects/hostA.cfg/usr/local/nagios/etc/nagios.cfg

假使要再添加B機(jī)器方法炮制就可以了

hostA.cfg

definehost{

usegeneric-server

host_nameA

aliasA

addressA的IP

}

defineservice{

usegeneric-service

host_nameA

service_descriptionload

check_commandcheck_nrpe!check_load

#使用自定參數(shù)

#check_commandcheck_nrpe!check_load!6.0,5.0,4.0!15.0,8.0,6.0

}

重啟監(jiān)控機(jī)nagios

servicenagiosreload

訪問(wèn)http://localhost/nagios就可以看到新增的機(jī)器了

如何修改nrpe端口

被監(jiān)控機(jī)nrpe.cfg修改server_port為15666

server_port=15666

重啟nrpe

監(jiān)控機(jī)commands.cfg增加-p15666

definecommand{

command_namecheck_nrpe

command_line$USER1$/check_nrpe-H$HOSTADDRESS$-p15666-c$ARG1$}

重啟nagios就可以了

Connectionrefusedortimedout

檢查nrpe端口

檢查nrpe.cfg中allowed_hosts是否包含監(jiān)控機(jī)ip地址

檢查/etc/hosts.allow文件中監(jiān)控機(jī)ip地址nrpe:1

檢查iptables

開(kāi)放5666端口

iptables-L

iptables-ARH-Firewall-1-INPUT-ptcp-mstate--stateNEW-mtcp--dport5666-jACCEPT

#注意順序

iptables-L

serviceiptablessave

serviceiptablesrestart

通過(guò)文章，我們不難發(fā)現(xiàn)NagiosNRPE監(jiān)控遠(yuǎn)程主機(jī)操作十分簡(jiǎn)單！

Question1:WhenIexecutecheck_nrpecommandwithsomearguments,Igetthemessage

“CHECK_NRPE:Received0bytesfromdaemon.Checktheremoteserverlogsforerrormessages.〞.HowdoIfixthisissue?

Answer1:Theissueisverystraightforward.check_nrpedoesn’ttakeanyargumentsbydefault.Youshouldenablethecommandlineargum