Nagios的安装过程(FreeBSD)
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nagios的安装比较简单，复杂的是设置和配置参数的设定。不过你要放松一点，毕竟我们要搞定它，不是吗?那就开始吧：
1：获得最新的安装包，http://www.nagios.org/download
2：以root身份登录服务器，目前最新的版本是2.5：
1)nagios，版本2.5：
fetch http://superb-west.dl.sourceforge.net/sourceforge/nagios/nagios-2.5.tar.gz
or
wget http://superb-west.dl.sourceforge.net/sourceforge/nagios/nagios-2.5.tar.gz
2)获得nagios插件，版本1.4.3：
http://surfnet.dl.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.3.tar.gz
3)获得图库文件：
http://dl.sf.net/nagios/imagepak-base.tar.gz
4)NRPE，版本2.5.2
http://ufpr.dl.sourceforge.net/sourceforge/nagios/nrpe-2.5.2.tar.gz
5)NSCA，版本2.6
http://kent.dl.sourceforge.net/sourceforge/nagios/nsca-2.6.tar.gz
3：切换到root用户：
sudo su
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4：解压缩
tar zxvf nagios-2.5.tar.gz
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5：建立运行nagios的用户：
adduser nagios
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6：建立安装nagios的文件夹，并使这个文件夹的所有者为nagios:nagios
mkdir /usr/local/nagios
chown nagios.nagios /usr/local/nagios
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7：确认web服务器的用户
可能会通过web接口执行一些命令，必须确定web服务器以哪个用户运行的，通常为：apache：
grep "^User" /usr/local/apache2/conf/httpd.conf
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8：建立命令文件组
这个新的组会包括apache的用户和nagios的用户
pw groupadd nagcmd
pw usermod apache -G nagcmd
pw usermod nagios -G nagcmd
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cat /etc/group
nagcmd:*:9007:apache,nagios
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8：运行配置脚本并安装nagios
cd nagios-2.5
./configure --prefix=/usr/local/nagios --with-gd-lib=/usr/local/lib --with-gd-inc=/usr/local/include
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*** Configuration summary for nagios 2.5 07-13-2006 ***:
General Options:
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Nagios executable: nagios
Nagios user/group: nagios,nagios
Command user/group: nagios,nagios
Embedded Perl: no
Event Broker: yes
Install ${prefix}: /usr/local/nagios
Lock file: ${prefix}/var/nagios.lock
Init directory: /usr/local/etc/rc.d
Host OS: freebsd6.0
Web Interface Options:
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------------------------
HTML URL: http://localhost/nagios/
CGI URL: http://localhost/nagios/cgi-bin/
Traceroute (used by WAP): /usr/sbin/traceroute
Review the options above for accuracy. If they look okay,
type 'make all' to compile the main program and cgis.
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make all
make install
make install-init
make install-commandmode
make install-config
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9：安装nagios-plugins
tar zxvf nagios-plugins-1.4.3.tar.gz
cd nagios-plugins-1.4.3
./configure --prefix=/usr/local/nagios-plugins
make all
make install
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安装完成以后在/usr/local/nagios-plugins-plugins会产生一个libexec的目录，将该目录全部移动到/usr/local/nagios目录下即可。
mv /usr/local/nagios-plugins-plugins/libexec/ /usr/local/nagios/
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10：imagepak-base.tar.gz的安装
tar –xvzf imagepak-base.tar.gz
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解压以后是base目录
mv base/ /usr/local/nagios/share/images/logos/
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