CentOS 5.7 64位系统中安装nagios监控服务

系统版本:
CentOS release 5.7 x86_64

软件版本:
nagios-3.3.1.tar.gz，nagios-plugins-1.4.15.tar.gz，pnp4nagios-0.6.6.tar.gz，nrpe-2.13.tar.gz，check_openmanage-3.7.3.tar.gz，OM_6.2.0_ManNode_A00.tar.gz

软件说明:
pnp4nagios-0.6.6.tar.gz：基于rrdtool为nagios数据呈现连续的图表信息。
OM_6.2.0_ManNode_A00.tar.gz ：检测dell服务器硬件状态，包括风扇转速，温度，电源电压等等所有硬件状态信息。可通过web方式查看。
check_openmanage-3.7.3.tar.gz：探测OMSA硬件状态信息，返回给nagios，在nagios上成像。

步骤1，安装nagios前的准备

下载nagios机器插件

wget http://cdnetworks-kr-2.dl.sourceforge.net/project/nagios/nagios-3.x/nagios-3.3.1/nagios-3.3.1.tar.gz
wget http://cdnetworks-kr-2.dl.sourceforge.net/project/nagiosplug/nagiosplug/1.4.15/nagios-plugins-1.4.15.tar.gz

配置sohu的yum安装源：

cd /etc/yum.repos.d/
mv CentOS-Base.repo CentOS-Base.repo.bak
wget http://mirrors.sohu.com/help/CentOS-Base-sohu.repo
mv CentOS-Base-sohu.repo CentOS-Base.repo
vim /etc/yum/pluginconf.d/fastestmirror.conf

关闭fastestmirror，enable选项设置为0

yum clean
yum makecache
yum update

yum安装LAMP环境：

yum -y install httpd php php-mysql mysql mysql-server php-snmp php-pdo perl-DBDMySQL

启动httpd

/etc/init.d/httpd start

设置开机启动apache

chkconfig --level 2345 httpd on
chkconfig --list httpd

步骤2，安装nagios及其插件
添加nagios用户和用户组：

useradd nagios && passwd nagios
groupadd nagcmd
usermod -G nagcmd nagios

安装nagios及其插件：

tar xzvf nagios-3.3.1.tar.gz
cd nagios
./configure --with-nagios-user=nagios --with-nagiosgroup=nagcmd && make all && make install && make install-init && make install-config && make install-commandmode && make install-webconf
htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin//创建web界面管理员账户，需要创建密码。

vim /etc/init.d/nagios //修改启动文件中的commandfile，启动时给full权限

if [ -d $NagiosLockDir ]; then touch $NagiosLockDir/$NagiosLockFile; fi
echo " done."
chmod 777 $NagiosCommandFile//添加此行代码
exit 0
/etc/init.d/nagios start
/etc/init.d/httpd restart

安装nagios插件

tar -xzvf nagios-plugins-1.4.15.tar.gz
cd nagios-plugins-1.4.15
./configure --prefix=/usr/local/nagios/ && make && make install
grep ^User /etc/httpd/conf/httpd.conf//查看apache用户
User apache
usermod -G nagcmd apache//将apache用户添加到nagcmd用户组中
chown -R nagios:nagios /usr/local/nagios/
chmod 755 -R /usr/local/nagios/

步骤3，pnp4nagios 安装

下载pnp4nagios

wget http://cdnetworks-kr-1.dl.sourceforge.net/project/pnp4nagios/PNP-0.6/pnp4nagios-0.6.6.tar.gz

安装pnp4nagios

tar xzvf pnp4nagios-0.6.6.tar.gz
yum -y install apr-devel apr-util check-devel cairo-devel pango-devel libxml2-devel rpmbuild glib2-devel dbus-devel freetype-devel fontconfig-devel gcc-c++ expat-devel python-devel libXrender-devel zlib libpng freetype libjpeg fontconfig gd libxml2 pcre pcre-devel libpcre libconfuse libart_lgpl-devel
yum -y install ruby
yum -y install libdbi

yum安装rrdtool，可能之前的yum源没有此文件包，所以需要配置一个新的yum源。

cd /etc/yum.repos.d/

vim dag.repo
添加内容：

[dag]
   name=Dag RPM Repository for Red Hat Enterprise Linux
   baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag
   gpgcheck=1
   gpgkey=http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt
   enabled=1

保存退出

mv CentOS-Base.repo CentOS-Base.repo.old
yum install -y rrdtool perl-rrdtool rrdtool-devel
cd /root/softwares/pnp4nagios-0.6.6
./configure --with-nagios-user=nagios --with-nagios-group=nagcmd
make all
make install && make install-webconf && make install-config && make install-init

添加pnp4nagios的配置文件

cd /usr/local/pnp4nagios/etc/
mv misccommands.cfg-sample misccommands.cfg
mv nagios.cfg-sample nagios.cfg
mv npcd.cfg-sample npcd.cfg
mv process_perfdata.cfg-sample process_perfdata.cfg
mv rra.cfg-sample rra.cfg
cd pages/
mv web_traffic.cfg-sample web_traffic.cfg
cd ../check_commands
mv check_all_local_disks.cfg-sample check_all_local_disks.cfg
mv check_nrpe.cfg-sample check_nrpe.cfg
mv check_nwstat.cfg-sample check_nwstat.cfg
/etc/init.d/npcd restart //启动pnp4nagios

修改nagios配置文件

cd /usr/local/nagios/etc
vim nagios.cfg
#打开注释项：
process_performance_data=1
host_perfdata_command=process-host-perfdata
service_perfdata_command=process-service-perfdata
cd objects/

vim commands.cfg
修改perfdata 标红的command_line

# 'process-host-perfdata' command definition definecommand{
command_nameprocess-host-perfdata
command_line/usr/local/pnp4nagios/libexec/process_perfdata.pl
}
# 'process-service-perfdata' command definition define command{
command_nameprocess-service-perfdata
command_line/usr/local/pnp4nagios/libexec/process_perfdata.pl
}

修改templates.cfg文件。

vim templates.cfg //添加小太阳模版，镶嵌在nagios页面上

##### 添加pnp4nagios的模板 #######
define host {
   name host-pnp
   action_url /pnp4nagios/graph?host=$HOSTNAME$&srv=_HOST_
   register 0
   }
define service {
name srv-pnp
action_url /pnp4nagios/graph?host=$HOSTNAME$&srv=$SERVICEDESC$
register 0
}

遇到的问题：
一、访问nagios页面，点击图表显示图标，报错如下：
Kohana requires PHP 5.2 or newer.
说明我们安装的php版本过低，需要升级php

二、访问nagios页面，点击图表显示图标，报错如下：
解决办法：（与yum升级php相似）
找到php比较新的yum源，创建新的源，将原有的yum源先屏蔽掉，使用新源。

mv CentOS-Base.repo CentOS-Base.repo.old
vim updatephp.repo
添加如下内容

[abrmblings]
name=Jason's Utter Ramblings Repo
baseurl=http://www.jasonlitka.com/media/EL$releasever/$basearch/
enabled=1
gpgcheck=1
gpgkey=http://www.jasonlitka.com/media/RPM-GPG-KEY-jlitka
yum update php -y
yum install php*-gd

步骤4，安装nrpe和 OMSA，以及用nrpe检测OMSA

下载安装nrpe：

wget http://prdownloads.sourceforge.net/sourceforge/nagios/nrpe-2.13.tar.gz
tar xzvf nrpe-2.13.tar.gz
cd nrpe-2.13
/configure && make all && make install-plugin && make install-daemon && make install-daemon-config
ll /usr/local/nagios/
chown -R nagios:nagios /usr/local/nagios

添加nrpe检测OMSA配置文件：

mkdir -p /usr/local/nagios/etc/objects/Dell_OMSA
cd /usr/local/nagios/etc/objects/Dell_OMSA/

vim dell_service_linux.cfg
其中添加内容：

define service {
host_name web112
service_description check_omsa
use generic-service
check_command check_nrpe!check_omsa
_ser_info dell omsa
check_interval 10
notification_options c,r
}

vim /usr/local/nagios/etc/objects/localhost.cfg
添加如下内容：

################ 自定义主机 ##################
define host{
use linux-server,host-pnp
host_name web112
alias pnp4nagios
address 192.168.144.112
}

vi /usr/local/nagios/etc/nagios.cfg
添加如下语句：

cfg_file=/usr/local/nagios/etc/objects/Dell_OMSA/dell_service_linux.cfg

vi /usr/local/nagios/etc/nrpe.cfg
添加如下语句：

command[check_omsa]=/usr/local/nagios/libexec/check_openmanage -b ctrl_fw=ALL\/ctrl_driver=ALL -p

下载安装OMSA检测插件：

cd /root/softwares/
wget http://folk.uio.no/trondham/software/files/check_openmanage-3.7.3.tar.gz
tar xzvf check_openmanage-3.7.3.tar.gz
cp check_openmanage /usr/local/nagios/libexec/
ll /usr/local/nagios/libexec/check_openmanage
chown -R nagios:nagios /usr/local/nagios/
ll /usr/local/nagios/libexec/check_openmanage
/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
/usr/local/nagios/libexec/check_nrpe -H localhost
/etc/init.d/nagios restart
/etc/init.d/npcd restart

被监控机器安装OMSA：

mkdir -p /usr/local/omsa
cd /usr/local/omsa
wget http://ftp.us.dell.com/sysman/OM_5.5.0_ManNode_A00.tar.gz

vim /etc/redhat-release //在行末添加Tikanga

CentOS release 5.6 (Final)Tikanga
sh linux/supportscripts/srvadmin-install.sh -x
linux/supportscripts/srvadmin-services.sh start

By default, OMSA web application runs on Port 1311 . Login to OMSA from web using the URL: https://{omsa-server-ip-address}:1311 using root as shown below. Please note that you can login only using HTTPS.

步骤5，邮件报警功能设置
vim /usr/local/nagios/etc/objects/contacts.cfg

在最后添加如下内容：

复制代码代码示例:

	############# system administrators ############# 

	define contact{ 

	contact_name **** 

	use generic-contact 

	alias administrator01 

	email 接受报警的邮箱01，例如：123456789@qq.com 

	} 

	define contact{ 

	contact_name **** 

	use generic-contact 

	alias administrator02 

	email 接受报警的邮箱02 

	} 

	define contact{ 

	contact_name **** 

	use generic-contact 

	alias administrator03 

	email 接受报警的邮箱03 

	} 

	 define contact{ 

	 contact_name **** 

	 use generic-contact 

	 alias administrator04 

	 email 接受报警的邮箱04 

	} 

	############# group of system administrators ########### 

	define contactgroup{ 

	contactgroup_name system-admins 

	alias Nagios Administrators 

	members 刚才定义的contact_name，成员与成员之间用逗号分割 

	}

vim /usr/local/nagios/etc/objects/templates.cfg
将contact_groups 选项的admins修改为system-admins
或通过sed命令直接替换:

sed 's/admins/system\-admins/g' /usr/local/nagios/etc/objects/templates.cfg

要成功发送邮件，还要开启smtp服务，需要启用sendmail或者相似应用。
本文使用系统的sendmail。

/etc/init.d/sendmail start

发送测试邮件：

echo 'Hello,nagios.I'm your administrator!!!' | mail -s 'mail test' *******@qq.com

如果邮件发送不成功，请检查tcp25端口是否在监听，并且查看防火墙设置是否放行25端口。

至此，nagios的监控功能初步完成。之后需要做的就是把被监控节点一个一个的加进来了。
也可以写个shell或perl脚本，批量添加主机进来。

(责任编辑：IT)

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CentOS 5.7 64位系统中安装nagios监控服务