Nagios安装配置

目录：
一、Nagios安装
二、Nagios配置

系统信息：Centos5.8X86 需要预先安装好apapche服务和PHP环境
软件信息：
nagios-3.5.0.tar.gz
nagios-plugins-1.4.16.tar.gz
sendmail-8.13.8-8.el5
一、Nagios安装
1. 安装Nagios

[root@cacti-nagios ~]# wget http://softlayer-ams.dl.sourceforge.net/project/nagios/nagios-3.x/nagios-3.5.0/nagios-3.5.0.tar.gz
[root@cacti-nagios ~]# tar -zxvf nagios-3.5.0.tar.gz
[root@cacti-nagios ~]# cd nagios
[root@cacti-nagios nagios]# ./configure --prefix=/usr/local/nagios
[root@cacti-nagios nagios]# useradd nagios -s /bin/false
[root@cacti-nagios nagios]# make all
[root@cacti-nagios nagios]# make install
[root@cacti-nagios nagios]# make install-init
[root@cacti-nagios nagios]# make install-commandmode
[root@cacti-nagios nagios]# make install-config
[root@cacti-nagios nagios]# make install-webconf
[root@cacti-nagios nagios]# grep AuthUserFile /etc/httpd/conf.d/nagios.conf
AuthUserFile /usr/local/nagios/etc/htpasswd.users
[root@cacti-nagios nagios]# htpasswd -c /usr/local/nagios/etc/htpasswd.users nagios
New password: 123456
Re-type new password: 123456
Adding password for user nagios
[root@cacti-nagios nagios]# cat /usr/local/nagios/etc/htpasswd.users
nagios:FPuu/F25jQpac

2. 安装Nagios插件

root@cacti-nagios ~]# wget http://nagios-plugins.org/download/nagios-plugins-1.4.16.tar.gz
[root@cacti-nagios ~]# tar -zxvf nagios-plugins-1.4.16.tar.gz
[root@cacti-nagios ~]# cd nagios-plugins-1.4.16
[root@cacti-nagios nagios-plugins-1.4.16]# ./configure --prefix=/usr/local/nagios/
[root@cacti-nagios nagios-plugins-1.4.16]# make
[root@cacti-nagios nagios-plugins-1.4.16]# make install
[root@cacti-nagios ~]# /etc/init.d/httpd restart

3. 通过浏览器访问nagios

可以访问页面，但是点击内页时会有报错：Error: Could not read object configuration data!
这是因为没有设置配置文件导致，完成下一步配置文件的操作后便可以正常点击
二、Nagios配置
1. 编辑cgi.cfg文件，修改控制脚本

[root@cacti-nagios ~]# cd /usr/local/nagios/etc/
[root@cacti-nagios etc]# vi cgi.cfg
#:107行取消注释并修改：
default_user_name=nagios
#:119行：
authorized_for_system_information=nagios
#:131行：
authorized_for_configuration_information= nagios
#:144行：
authorized_for_system_commands=nagios
#:157行：
authorized_for_all_services= nagios
#:158行：
authorized_for_all_hosts= nagios
#:171行：
authorized_for_all_service_commands= nagios
#:172行：
authorized_for_all_host_commands= nagios

2. 编辑主配置文件nagios.cfg

[root@cacti-nagios etc]# vi nagios.cfg
# :34行添加：
cfg_file=/usr/local/nagios/etc/objects/hosts.cfg
cfg_file=/usr/local/nagios/etc/objects/services.cfg

3. 编辑timeperiods.cfg文件，定义监控时间段

[root@cacti-nagios etc]# vi objects/timeperiods.cfg
define timeperiod{
        timeperiod_name all_days
        alias 24 Hours A Day, 7 Days A Week
        sunday 00:00-24:00
        monday 00:00-24:00
        tuesday 00:00-24:00
        wednesday 00:00-24:00
        thursday 00:00-24:00
        friday 00:00-24:00
        saturday 00:00-24:00
}

定义主机与服务 以linux-server为模板，服务以generic-service为模板
 vim host.cfg

define host{
use linux-server
host_name SZ149
address 192.168.88.149
}

define service{
use   generic-service
host_name  web253
service_description CPU Load
check_command check_nrpe!check_load
}

测试配置文件是否正确

[root@cacti-nagios etc]# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
Total Warnings: 0
Total Errors: 0