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：
               [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_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：

    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

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[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（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：[email protected]
}


 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.