nagios安装与配置

Nagios安装与配置文档

一、安装

测试运行环境Centosx64-6.4

1、服务端的安装脚本,直接运行即可,备注:运行的时候需要输入两个密码,第一个

用户nagios的密码,第二个密码是nagiosadmin登录nagios的密码

###################以下是服务端的安装脚本,直接运行即可####################

#!/bin/bash

yum-yinstallhttpdphpgccglibcglibc-commongdgd-devel

cd/opt

/bin/tar-zxfnagios-3.2.3.tar.gz

/usr/sbin/useradd-mnagios

/usr/sbin/useradd-mapache

passwdnagios

/usr/sbin/groupaddnagcmd

/usr/sbin/usermod-a-Gnagcmdnagios

/usr/sbin/usermod-a-Gnagcmdapache

cdnagios-3.2.3

./configure--with-command-group=nagcmd

makeall

makeinstall

makeinstall-init

makeinstall-config

makeinstall-commandmode

mkdir-p/etc/httpd/conf.d

makeinstall-webconf

/usr/bin/htpasswd-c/usr/local/nagios/etc/htpasswd.usersnagiosadmin

servicehttpdrestart

cd/opt

/bin/tar-zxfnagios-plugins-1.4.15.tar.gz

cdnagios-plugins-1.4.15

./configure--with-nagios-user=nagios--with-nagios-group=nagios--enable-redhat-pthread-workaround

make

makeinstall

chkconfig--addnagios

chkconfignagioson

/usr/local/nagios/bin/nagios-v/usr/local/nagios/etc/nagios.cfg

servicenagiosstart

cd/opt

/bin/tar-zxfnrpe-2.12.tar.gz

cdnrpe-2.12

./configure

makeall

makeinstall-plugin

makeinstall-daemon

makeinstall-daemon-config

###################以上是服务端的安装脚本,直接运行即可##################

2、客户端的安装脚本,直接在客户机安装即可

###################以下是客户端的安装脚本,直接运行即可##################

#!/bin/bash

usr/sbin/useradd-mnagios

passwdnagios

cd/opt

/bin/tar-zxfnagios-plugins-1.4.15.tar.gz

cdnagios-plugins-1.4.15

./configure--with-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

chkconfig--addnagios

chkconfignagioson

/usr/local/nagios/bin/nagios-v/usr/local/nagios/etc/nagios.cfg

servicenagiosstart

/usr/bin/chcon-R-thttpd_sys_content_t/usr/local/nagios/sbin/
/usr/bin/chcon-R-thttpd_sys_content_t/usr/local/nagios/share/

cd/opt

/bin/tar-zxfnrpe-2.12.tar.gz

cdnrpe-2.12

./configure

makeall

makeinstall-plugin

makeinstall-daemon

makeinstall-daemon-config

###################以上是客户端的安装脚本,直接运行即可##################

二、安装完之后,测试登录

http://localhost/nagios输入上面的用户名与密码即可正常登录了

三、nrpe相关命令

1、返回当前NRPE的版本:

/usr/local/nagios/libexec/check_nrpe�CHlocalhost

NRPEv2.12

也就是在本地用check_nrpe命令连接nrpedaemon是正常的

注:为了后面工作的顺利进行,注意本地防火墙要打开5666能让外部的监控机访问

2/usr/local/nagios/libexec/check_nrpe�Chelp查看check_nrpe命令的用法

3check_nrpe�CH被监控的主机�Cc要执行的监控命令

注:-c后面接的监控命令必须是nrpe.cfg文件定义的,也就是NRPEdaemon只运行nrpe.cfg中所定义的命令

4、在监控机与被监控机上启动NRPE

/usr/local/nagios/bin/nrpe�Cc/usr/local/nagios/etc/nrpe.cfg�Cd

四、nagios服务器上配置被监控机器上的80端口:

1、首先在被监控机器上写一个判断80端口的脚本,在这里我自己写了一个判断80

口的脚本,脚本内容如下,并且把脚本放到/usr/local/nagios/libexec目录下,并赋予其执行权限:

脚本的名称为:check_port,内容如下:

#!/bin/bash

PORT=`netstat-ntpl|grep80|awk-F:'{print$4}'|awk-F""'{print$1}'`

if["$PORT"=="80"];then

echo"80ISOK"

exit0

else

echo"80ISERROR"

exit2

fi

2、启动被监控机器上的nrpe进程

/usr/local/nagios/bin/nrpe�Cc/usr/local/nagios/etc/nrpe.cfg�Cd

3、nrpe运行默认端口为5666,请查看一下端口是否开启

4、检查nrpe的版本

/usr/local/nagios/libexec/check_nrpe�CHlocalhost

NRPEv2.12à版本为2.12

5、配置nrpe的配置文件,只需要修改/usr/local/nagios/etc/nrpe.conf即可,

修改的内容如下:

在第200行左右,添加如下内容:

command[check_port_1]=/usr/local/nagios/libexec/check_port

在第79行左右,修改如下内容:

allowed_hosts=127.0.0.1

allowed_hosts=127.0.0.1,192.168.2.90(监控机的IP地址)

6、被监控端的配置到此结束!!!

7、在监控机上配置:

为了更清楚的理解主机与服务的概念,先在/usr/local/nagios/etc/objects目录

Touch两个hosts.cfg,service.cfg配置文件

为了使上述的两个配置文件生效,请修改/usr/local/nagios/etc/nagios.cfg的配置

文件,修改内容如下:

大概在33行左右,先注释掉默认的:

cfg_file=/usr/local/nagios/etc/objects/localhost.cfg

再添加:

cfg_file=/usr/local/nagios/etc/objects/hosts.cfg

cfg_file=/usr/local/nagios/etc/objects/service.cfg

servicenagiosrestart使配置文件生效

启动nrpe

/usr/local/nagios/bin/nrpe�Cc/usr/local/nagios/etc/nrpe.cfg�Cd

验证监控机与被监控制机之机能否利用nrpe传数据:

/usr/local/nagios/libexec/check_nrpe�CH被监控机IP

在监控机上的hosts.cfg里添加如下配置文件:

definehost{#定义一个主机

uselinux-server#使用linux-server的模版

host_nameCNC-BJ-H-190#主机名称为:CNC-BJ-H-190(被监控机)

address192.168.2.190#主机的IP地址(被监控机)

}

在监控机上的service.cfg里添加如下配置文件:

defineservice{

uselocal-service#使用local-service的模版

host_nameCNC-BJ-H-190#主机名为:CNC-BJ-H-190(被监控机)

service_descriptionport#描述

check_commandcheck_nrpe_port!check_port_1

}

备注:

上述的Check_nrpe_port命令是command.cfg里定义的关键字,不能随便写

上述的check_port_1命令是被监控端nrpe.cfg里定义的关键字,不能随便写

下面针对command.cfg这个配置文件讲解一下:

这个配置文件主要是定义了命令,如果只需要满足上面的要求,可以把comman

d.cfg这个文件备份一下,然后新建立一个command.cfg,内容如下:

红色代表是错误的时候,主机与服务报警配置文件;

绿色代表是保活主机Ping的配置文件;

黑色代表是上面提到的端口命令配置文件:

#'notify-host-by-email'commanddefinition

definecommand{

command_namenotify-host-by-email

command_line/usr/bin/printf"%b""*****Nagios*****\n\nNotificationType:$NOTIFICATIONTYPE$\nHost:$HOSTNAME$\nState:$HOSTSTATE$\nAddress:$HOSTADDRESS$\nInfo:$HOSTOUTPUT$\n\nDate/Time:$LONGDATETIME$\n"|/bin/mail-s"**$NOTIFICATIONTYPE$HostAlert:$HOSTNAME$is$HOSTSTATE$**"$CONTACTEMAIL$

}

#'notify-service-by-email'commanddefinition

definecommand{

command_namenotify-service-by-email

command_line/usr/bin/printf"%b""*****Nagios*****\n\nNotificationType:$NOTIFICATIONTYPE$\n\nService:$SERVICEDESC$\nHost:$HOSTALIAS$\nAddress:$HOSTADDRESS$\nState:$SERVICESTATE$\n\nDate/Time:$LONGDATETIME$\n\nAdditionalInfo:\n\n$SERVICEOUTPUT$\n"|/bin/mail-s"**$NOTIFICATIONTYPE$ServiceAlert:$HOSTALIAS$/$SERVICEDESC$is$SERVICESTATE$**"$CONTACTEMAIL$

}

#'check-host-alive'commanddefinition

definecommand{

command_namecheck-host-alive

command_line$USER1$/check_ping-H$HOSTADDRESS$-w3000.0,80%-c5000.0,100%-p5

}

definecommand{

command_namecheck_nrpe_port

command_line$USER1$/check_nrpe-H被监控机的IP-ccheck_port_1

}

重启一下nagios服务。Servicenagiosrestart

到此为止,配置监控另一台机器的80端口就结束了,其它的配置类似,其实nagios里,最难的就是要理解{nrpe.cfg,command.cfg,hosts.cfg,service.cfg}这几个配置文件之前的关系,如果能理解这个,nagios就不难了

五、将绘图功能加入nagios

要安装nagios的绘图工具pnp,如果pnp的版本高于1.2以上,需要先安装

libart_lgpl-2.3.17.tar.gz,负则安装Pnp会报错

tar�Czxflibart_lgpl-2.3.17.tar.gz

./configure

Make

Makeinstall

Cp�Cr/usr/local/include/libart-2.0/usr/include

Nagios的绘图工具pnp,需要rrdtool工具支持,所以还得安装rrdtool工具

wgethttp://oss.oetiker.ch/rrdtool/pub/rrdtool-1.2.14.tar.gz
tarxfrrdtool-1.2.14.tar.gz
cdrrdtool-1.2.14

./configure--prefix=/usr/local/rrdtool--disable-python--disable-tcl

 

如果configure报如下错误:

configure: error: Please fix the library issues listed above and try again.

请执行yum -y install libart_lgpl-devel

 

make
makeinstall

安装pnp绘图工具

wgethttp://downloads.sourceforge.net/project/pnp4nagios/PNP/pnp-0.4.14/pnp-0.4.14.tar.gz?use_mirror=cdnetworks-kr-2&80495215
tarzxfpnp-0.4.14.tar.gz
cdpnp-0.4.14
./configure\
--with-rrdtool=/usr/local/rrdtool/bin/rrdtool\
--with-perfdata-dir=/usr/local/nagios/share/perfdata/
makeall
makeinstall
makeinstall-config
makeinstall-init

修改nagios的配置文件

#process_performance_data=0

process_performance_data=1

host_perfdata_command=process-host-perfdata

service_perfdata_command=process-service-perfdata

修改command.cfg配置文件:

vi/usr/local/nagios/etc/objects/commands.cfg+227
#'process-host-perfdata'commanddefinition
definecommand{
command_nameprocess-host-perfdata
command_line$USER1$/process_perfdata.pl
}

#'process-service-perfdata'commanddefinition
definecommand{
command_nameprocess-service-perfdata
command_line$USER1$/process_perfdata.pl
}

访问http://10.0.0.161/nagios/pnp/index.php

在服务service.cfg下面加如下配置行就会出现小太阳图标

process_perf_data1
action_url/nagios/pnp/index.php?host=$HOSTNAME$

8、在主机hosts.cfg下面加如下配置行就会出现上太阳图标

process_perf_data1
action_url/nagios/pnp/index.php?host=$HOSTNAME$

 

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