# adduser nagios
# mkdir /usr/local/nagios
# chown nagios.nagios /usr/local/nagios
# grep "^User" /usr/local/apache/conf/httpd.conf
User nobody

# /usr/sbin/groupadd nagcmd
# /usr/sbin/usermod -G nagcmd nobody <-- grep로 찾은 User
# /usr/sbin/usermod -G nagcmd nagios
# chmod 2770 /usr/local/nagios/var/rw
# chown -R nagios.nagcmd /usr/local/nagios/var/rw

http://nagios.org/download/에서 Nagios 2.2 Tar 다운로드
# tar zxvfp nagios-2.2.tar.gz
# cd nagios-2.2
# ./configure
# make all
# make install
# make install-init
# make install-commandmode
# make install-config

# vi /usr/local/apache/conf/httpd.conf
ScriptAlias /nagios/cgi-bin /usr/local/nagios/sbin

<Directory "/usr/local/nagios/sbin">
    Options ExecCGI
    AllowOverride None
    Order allow,deny
    Allow from all
    AuthName "Dacom Hosting"
    AuthType Basic
    AuthUserFile /usr/local/nagios/etc/htpasswd.users
    Require valid-user
</Directory>

Alias /nagios /usr/local/nagios/share

<Directory "/usr/local/nagios/share">
    Options None
    AllowOverride None
    Order allow,deny
    Allow from all
    AuthName "Dacom Hosting"
    AuthType Basic
    AuthUserFile /usr/local/nagios/etc/htpasswd.users
    Require valid-user
</Directory>

# htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
# htpasswd /usr/local/nagios/etc/htpasswd.users otoio

http://nagios.org/download/에서 Nagios 2.2 Tar 다운로드
tar zxvfp nagios-plugin.tar.gz
# ./configure
# make
# make install
# make install-root