CentOS 5.7 64位系统安装nagios监控
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。
Part1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（mysql非必须，我是直接把原来安装LAMP环境的操作copy过来的，偷懒了~~~）
[*]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
Part2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 $NagiosCommandFile //添加此行代码
[*]
[*] exit 0
[*]/etc/init.d/nagios start
[*]/etc/init.d/httpd restart
安装nagios插件
[*]tar -xzvf nagios-plugins-1.4.15.tar.gz
[*]cd nagios-plugins-1.4.15
[*]./configure --prefix=/usr/local/nagios/ && make && make install
[*]grep ^User /etc/httpd/conf/httpd.conf //查看apache用户
[*] User apache
[*]usermod -G nagcmd apache //将apache用户添加到nagcmd用户组中
[*]chown -R nagios:nagios /usr/local/nagios/
[*]chmod 755 -R /usr/local/nagios/
Part3 pnp4nagios 安装
下载pnp4nagios
[*]wget http://cdnetworks-kr-1.dl.sourceforge.net/project/pnp4nagios/PNP-0.6/pnp4nagios-0.6.6.tar.gz
安装pnp4nagios
[*]tar xzvf pnp4nagios-0.6.6.tar.gz
[*]yum -y install apr-devel apr-util check-devel cairo-devel pango-devel libxml2-devel rpmbuild glib2-devel dbus-devel freetype-devel fontconfig-devel gcc-c++ expat-devel python-devel libXrender-devel zlib libpng freetype libjpeg fontconfig gd libxml2 pcre pcre-devel libpcre libconfuse libart_lgpl-devel
[*]yum -y install ruby
[*]yum -y install libdbi
yum安装rrdtool，可能之前的yum源没有此文件包，所以需要配置一个新的yum源。
[*]cd /etc/yum.repos.d/
[*]vim dag.repo
[*]
[*] 添加内容：
[*]
[*] name=Dag RPM Repository for Red Hat Enterprise Linux
[*] baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag
[*] gpgcheck=1
[*] gpgkey=http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt
[*] enabled=1
[*] 保存退出
[*]mv CentOS-Base.repo CentOS-Base.repo.old
[*]yum install -y rrdtool perl-rrdtool rrdtool-devel
[*]cd /root/softwares/pnp4nagios-0.6.6
[*]./configure --with-nagios-user=nagios --with-nagios-group=nagcmd
[*]make all
[*]make install && make install-webconf && make install-config && make install-init
添加pnp4nagios的配置文件
[*]cd /usr/local/pnp4nagios/etc/
[*]mv misccommands.cfg-sample misccommands.cfg
[*]mv nagios.cfg-sample nagios.cfg
[*]mv npcd.cfg-sample npcd.cfg
[*]mv process_perfdata.cfg-sample process_perfdata.cfg
[*]mv rra.cfg-sample rra.cfg
[*]cd pages/
[*]mv web_traffic.cfg-sample web_traffic.cfg
[*]cd ../check_commands
[*]mv check_all_local_disks.cfg-sample check_all_local_disks.cfg
[*]mv check_nrpe.cfg-sample check_nrpe.cfg
[*]mv check_nwstat.cfg-sample check_nwstat.cfg
[*]/etc/init.d/npcd restart //启动pnp4nagios
修改nagios配置文件
[*]cd /usr/local/nagios/etc
[*]vim nagios.cfg
[*]
[*] #打开注释项：
[*] process_performance_data=1
[*]
[*] host_perfdata_command=process-host-perfdata
[*]
[*] service_perfdata_command=process-service-perfdata
[*]
[*] cd objects/
[*]vim commands.cfg
[*]
[*] 修改perfdata 标红的command_line
[*]
[*] # 'process-host-perfdata' command definition definecommand{
[*] command_name process-host-perfdata
[*] command_line /usr/local/pnp4nagios/libexec/process_perfdata.pl
[*] }
[*] # 'process-service-perfdata' command definition define command{
[*] command_name process-service-perfdata
[*] command_line /usr/local/pnp4nagios/libexec/process_perfdata.pl
[*] }
[*]vim templates.cfg //添加小太阳模版，镶嵌在nagios页面上
[*]
[*] ##### 添加pnp4nagios的模板 #######
[*] define host {
[*] name host-pnp
[*] action_url /pnp4nagios/graph?host=$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：
webkit-fake-url://4F6A10D4-116C-43A8-834D-C8778C5E1FAE/image.tiff
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
[*]
[*] 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
Part4 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=/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（非常easy）
[*]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.
Prat5 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：
[*]############# 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
或者通过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。我在这里用的是系统的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。如果觉得一台一台添加非常不fashion，well，自己去写批处理的脚本。
That‘s all.
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